ACI 211.5R-01

我们需要回答用户：作为OCR引擎，把工程标准PDF页面精确转成HTML片段，只返回HTML，不要解释。需要遵守严格标签/class限制。现在分析页面内容。

页面是两栏布局。左栏：4.3 Trial batch record submittal 段落；4.4 Resubmittals 段落；CHAPTER 5—ADDITIONAL SUGGESTED DOCUMENTATION 标题；5.1 Transmittal letter 段落；5.2 Certification of compliance 段落；5.3 Submittal forms 段落；CHAPTER 6—REFERENCES 标题；6.1 Referenced standards and reports 段落开始。右栏：继续左栏6.1段落？右栏顶部：contact the proper sponsoring group if it is desired to refer to the latest version. 然后 American Concrete Institute (ACI) 列表，American Society for Testing and Materials (ASTM) 列表，然后 publications obtained from organizations addresses，然后 6.2 Other references 段落。

需要输出以 h2 开头。页码用

4

结尾。页眉页脚忽略：211.5R-4 ACI COMMITTEE REPORT 忽略。页码底部忽略。

两栏布局：可用 table class="layout-columns" with tr td left/right. 但内容跨栏：左栏最后一段6.1开始，右栏继续。若用两栏 table，左栏包含左列内容，右栏包含右列内容。需要保持阅读顺序？ OCR 页面通常两栏，但 HTML 片段可以按视觉两栏。用户允许 layout-columns。可以用 table class="layout-columns" with two td. 左 td 包含左栏内容，右 td 包含右栏内容。这样符合视觉。

标题：CHAPTER 5... 和 CHAPTER 6... 是页内标题。第1页用 h2。但已有小节标题 4.3, 4.4, 5.1 etc. 视觉层级：CHAPTER 5 是 h2? 4.3/4.4 是 h3? 5.1 h3? 6.1 h3? 6.2 h3? 但页面开头没有 chapter 4 title, only 4.3. 最高优先级每页输出必须以

开头（页面内标题）。页面内第一个标题是 4.3—Trial batch record submittal? 但 CHAPTER 5 也是标题。要求每页输出必须以 h2 开头。可以用

4.3—Trial batch record submittal

开头？ 但 4.3 是小节，不是 chapter。示例用 h2 for section. 规则：页内标题：第1页用 h2，后续页用 h2 或 h3（根据视觉层级）。所以第一个标题用 h2。后续 CHAPTER 5/6 可用 h2，小节用 h3。这样开头 h2 满足。

但两栏 table 内能否包含 h2? 可以。每页输出必须以 h2 开头，如果 table 是第一个元素，则不是以 h2 开头。需要把第一个 h2 放在 table 外？ 但视觉两栏，左栏第一个标题是 4.3。可以输出

4.3—Trial batch record submittal

然后 table layout-columns? 但这样会破坏两栏，因为 4.3 标题和段落跨栏？ 左栏包含 4.3 标题和段落，右栏顶部是 6.1 continuation. 如果 h2 外置，左栏 td 从 4.3 段落开始？ 但标题外置会阅读顺序奇怪。要求每页输出必须以 h2 开头，可能允许 table 内第一个元素是 h2? “每页输出必须以

开头” 可能指整个输出第一个标签是 h2。若 table 开头则违反。可以不用两栏 table，按阅读顺序线性输出：左栏内容，然后右栏内容。这样第一个 h2 是 4.3。两栏布局不是必须，但排版替代方案可用。线性输出更简单，满足开头 h2。但页面是两栏，是否必须用 layout-columns? 不是必须。内容规则忠实还原。线性顺序可能改变视觉，但可接受？ 用户给了两栏布局替代方案，可能希望用 table class layout-columns。但最高优先级每页输出必须以 h2 开头。若用 table 开头违反。可以把 h2 放在 table 前，然后 table 包含剩余两栏？ 但左栏第一个标题外置，左栏 td 包含 4.3 段落，右栏 td 包含右栏内容。这样输出以 h2 开头，且两栏布局用于剩余内容。但 4.3 标题不在左栏 td 内，视觉可能不完美。或者用 table class layout-columns 但 table 前放 h2? 不行，标题属于左栏。

另一种：使用 table class="layout-columns" 但 table 不是第一个？ 必须 h2 开头。可以

4.3—Trial batch record submittal

If past... ...

...

. 这样满足开头 h2。但 4.3 标题与左栏段落分离，可能可接受。

但 CHAPTER 5 标题在左栏中间，若左栏 td 包含它，没问题。右栏 td 包含右栏。线性阅读顺序：h2 4.3, table left/right. 在 table 内左栏包含 4.3 段落、4.4、CHAPTER 5、5.1、5.2、5.3、CHAPTER 6、6.1 段落开始；右栏包含 6.1 continuation、ACI/ASTM lists、addresses、6.2. 这样视觉两栏。

但 table 内 td 可以包含 h2/h3/p/table? 允许。需要避免 style. 列表：ACI/ASTM references 是编号列表，可用

或

. 规则参考文献保留用

或

. 但 ol/li 不能带属性。默认编号可能自动 1,2,3，但原文编号是 104R, 116R etc. 如果用 ol 会生成错误编号。可以用

每行，保留编号。或者用 table? 但参考文献用 p 可以。对于 ACI list:

104R Preparation of Notation for Concrete

etc. 但原文是两列：编号和描述。可以用

104R Preparation...

. 保留编号。

ASTM list: C 29 Standard... etc.

Organizations addresses: paragraphs.

6.2 Other references: paragraph.

Need preserve em for inline formulas? None.

Need no or multiple spaces. Use single spaces.

Need no style. class only allowed.

Need table for layout-columns: allowed class layout-columns. But table with tr td no thead. Allowed.

Potential issue: table class layout-columns with td containing h2? If h2 inside td, output first element still h2 outside. Good.

But if h2 outside, then table left td starts with paragraph. The h2 is not in left column visually. Could instead make first element h2 and then table with left td containing all left column including duplicate? No duplicate. Maybe acceptable.

Alternative: Use no layout table, linear output. Simpler and satisfies h2. But user may expect two-column? They gave layout-columns but not mandatory. However page is clearly two-column; using layout-columns better. Need ensure output starts with h2. Could do:

4.3—Trial batch record submittal

If past... ...

...

4

But then 4.3 heading separated from its paragraph. Could put heading in left td and put a dummy h2 before? No, cannot duplicate. Could make first h2 be CHAPTER 5? But page starts with 4.3. Requirement every page output must start with h2 (page内标题). Could choose first h2 as 4.3. If table starts with h2 inside td, output starts with table, violation. So external h2 necessary.

Maybe use

4.3—Trial batch record submittal

then table left td includes paragraph. Good.

But what about CHAPTER 5 and CHAPTER 6 headings inside left td: use h2? If first h2 already, subsequent chapter headings can be h2. Section headings h3.

Need decide heading levels:

- 4.3—Trial batch record submittal: h2 (first)

- 4.4—Resubmittals: h3? Since same level as 4.3? Could be h3 if 4.3 h2? But 4.3 and 4.4 same level. If 4.3 h2, 4.4 should h2? But then many h2. Rule page内标题第1页用 h2, subsequent pages h2/h3 according visual. It doesn't require hierarchy. Could use h3 for subsections and h2 for chapters. But first must h2. Could make 4.3 h2, 4.4 h3? Inconsistent. Maybe make 4.3 h2, 4.4 h2, CHAPTER 5 h2, 5.1 h3, 5.2 h3, 5.3 h3, CHAPTER 6 h2, 6.1 h3, 6.2 h3. That's okay.

But if 4.3 h2 outside, 4.4 h2 inside left td. Fine.

Need preserve em dash? Use —.

Need text exact. Let's transcribe carefully.

Left column:

4.3—Trial batch record submittal

If past performance records for the proposed mixture proportions are not available, trial batches may be required by specification. When trial batches are used to establish strength relationships or to verify strength characteristics of the mixture, the least favorable combination of mixing water and air content should be used (ACI 211.1, ACI 301, ACI 318). This will provide a conservative estimate of strength. Trial batch procedures and report records should comply with ASTM C 192.

4.4—Resubmittals

During the conduct of work, if any changes to the mixture proportions or materials are made, the revised proportions should demonstrate a compressive strength equal to or exceeding the current required average strength established by job records.

CHAPTER 5—ADDITIONAL SUGGESTED DOCUMENTATION

5.1—Transmittal letter

Each submittal should be introduced by an original transmittal letter identifying the proposed concrete mixture(s) to be furnished, the project for which it is submitted, and the method used to select proportions. The transmittal should be signed and dated by the person that prepared the submittal and the person selecting the mixture proportions. If more than one party contributed to the submittal, each contributor’s role should be identified.

5.2—Certification of compliance

A statement certifying compliance of all materials proposed for the work, excepting those instances where a variance is requested, with the requirements of the contract documents is suggested. This can be conveniently handled by inclusion in the transmittal letter or by attaching separately.

5.3—Submittal forms

The quantity of each ingredient, as described in Chapter 3, and the mixture proportions format should be prepared as an independent document suitable for distribution. There are several commercial, computerized formats available that conveniently handle source information, mixture proportions, physical properties of materials used to establish the proportions, and strength documentation. For this reason, a specified format is discouraged because it can either preclude the use of commercial computerized submittals, be repetitive in nature, or both. All of the information identified herein should be included on the submittal form(s) or in the documentation submitted.

Additional data summarizing the past performance records or trial batch data should be integral parts of the submittal, as should special certification test data of materials. The form should be signed and dated by the person compiling or verifying the tabulation.

CHAPTER 6—REFERENCES

6.1—Referenced standards and reports

The standards and reports listed below were the latest editions at the time this document was prepared. Because these documents are revised frequently, the reader is advised to

Right column:

contact the proper sponsoring group if it is desired to refer to the latest version.

American Concrete Institute (ACI)

104R Preparation of Notation for Concrete

116R Cement and Concrete Terminology

211.1 Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete

214 Recommended Practice for Evaluation of Strength Test Results of Concrete

301 Specifications for Structural Concrete

318 Building Code Requirements for Structural Concrete

544.3R Guide for Specifying, Mixing, Placing, and Finishing Steel Fiber Reinforced Concrete

American Society for Testing and Materials (ASTM)

C 29 Standard Test Method for Unit Weight and Voids in Aggregates

C 33 Standard Specification for Concrete Aggregates

C 127 Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate

C 128 Standard Test Method for Specific Gravity and Absorption of Fine Aggregate

C 172 Standard Practice for Sampling Freshly Mixed Concrete

C 192 Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory

C 260 Standard Specification for Air-Entraining Admixtures for Concrete

C 330 Standard Specification for Lightweight Aggregate for Structural Concrete

C 494 Standard Specification for Chemical Admixtures for Concrete

D 448 Classification for Sizes of Aggregate for Road and Bridge Construction

The publications listed above may be obtained from the following organizations:

American Association of State Highway and Transportation Officials (AASHTO)

444 North Capitol Street NW, Suite 225

Washington, DC 20001

American Concrete Institute (ACI International)

P.O. Box 9094

Farmington Hills, MI 48333-9094

American Society for Testing and Materials

100 Barr Harbor Drive

West Conshohocken, PA 19428

6.2—Other references

ACI Committee 201, 1992, “Guide to Durable Concrete, (ACI 201.2R-92),” American Concrete Institute, Farmington Hills, Mich., 41 pp.

Need maybe italicize American Concrete Institute (ACI) and American Society... as headings? They are italic in original. Allowed em. Use American Concrete Institute (ACI). Similarly ASTM. Could use h3? They are subheadings. But references list. Use

maybe? But inside right td. However if use h3, okay. But original italic not heading? Could be heading. Use to preserve italic. But content rules headings? Not necessary. Use

...

.

Need preserve Chapter 3 in red? Original has Chapter 3 red. No color allowed. Just text.

Need no continuous spaces. Use single spaces.

Need table layout: If using table class layout-columns, td can contain multiple block elements. Need ensure no style. Use

...

...

. Allowed.

But if first h2 outside, then table left td starts with paragraph. Could maybe include h2 inside left td and put a hidden? No.

Could instead output:

4.3—Trial batch record submittal

If past...

4.4—Resubmittals

...

... left from CHAPTER 5 onward, right column ...

But then first part not two-column. But okay. However right column top continuation belongs to 6.1, which is after left column. If table starts at CHAPTER 5, right td includes right column from top (contact...) which is continuation of 6.1, but left td includes CHAPTER 5...6.1 start. This preserves two-column for most. But 4.3/4.4 linear before table. Could be acceptable. But visual: 4.3/4.4 left column top, right column top is continuation of 6.1, not aligned. If we put 4.3/4.4 outside, right column top still in table, but table starts after 4.4, so right column top appears after 4.4, not at top. Not ideal.

Maybe use table layout-columns with first h2 outside and left td includes 4.3 paragraph etc. That's best.

Need consider if h2 outside table but left td includes 4.3 paragraph, then 4.3 heading not in column. But okay.

Could we make output start with h2 inside table by using table as first? No.

Could use

4.3—Trial batch record submittal

then table with left td containing

If past...

and right td containing right column. Good.

Need maybe include 4.4 heading inside left td as h2. Good.

Potential issue: table class layout-columns with td containing h2 may be considered nested headings okay.

Need ensure no
for line breaks in addresses? Could use separate

for each line. Allowed. For address lines, use

...

. For list entries, use

...

. For ACI/ASTM entries, maybe use

104R Preparation...

. No multiple spaces.

Need preserve line breaks? Not necessary.

Need maybe use

for references? But numbering not original. Use p.

Need maybe use

for reference list? Could use table with two columns (number, description). But allowed table. But simpler p.

Need ensure no Markdown fences.

Need final only HTML.

Let's craft carefully.

Potential problem: The first h2 outside table, then table left td includes 4.3 paragraph. But 4.3 heading not in left td; if someone reads table, left column starts with paragraph. Fine.

Alternative: Use

4.3—Trial batch record submittal

then

If past... ...

...

. Good.

Need include right column first paragraph: contact... It is continuation of 6.1. In right td, first

contact...

. Good.

Need include 6.1 heading in left td before paragraph. It will appear after 5.3. Good.

Need include 6.2 heading in right td after addresses. Good.

Need maybe use h3 for 6.2. Good.

Need decide heading levels inside table:

- 4.4 h2? Since 4.3 h2 outside. Use h2.

- CHAPTER 5 h2.

- 5.1 h3.

- 5.2 h3.

- 5.3 h3.

- CHAPTER 6 h2.

- 6.1 h3.

- 6.2 h3.

But 4.4 same level as 4.3, h2. Good.

Need maybe use h2 for American Concrete Institute (ACI)? It is a subheading under references. Could use h3. But original italic. Use

American Concrete Institute (ACI)

? Allowed h3 and em. But if h3, okay. However references list headings maybe not numbered. Use h3. But then 6.2 h3 too. Fine.

Need maybe use

for footnotes? None.

Need page number:

4

at end.

Need no style.

Let's ensure no disallowed tags. table, tr, td, h2, h3, p, em, strong? Use no strong. span? no.

Need no attributes except class on table/p. td no attributes. Good.

Need no . Good.

Need no continuous spaces. Ensure no double spaces. In text, after periods single. In headings, em dash no spaces? Original 4.3—Trial. Use no spaces around em dash. Good.

Need preserve quotes: “Guide to Durable Concrete, (ACI 201.2R-92),” Use curly quotes? Allowed. Could use straight? Original curly. Use curly.

Need preserve apostrophe: contributor’s. Use curly.

Need preserve P.O. Box. Good.

Need preserve ACI 211.1, ACI 301, ACI 318. Good.

Need preserve ASTM C 192. Good.

Need preserve Chapter 3. Good.

Potential issue: In left column 5.3 paragraph has line break after submitted. Additional data... It's same paragraph? Original has paragraph break? It appears as separate paragraph? In PDF, after submitted. there is blank line? It shows Additional data... as new paragraph. Use separate

. Good.

Right column addresses: Each organization name and address lines. Could group each organization in

with
? But
allowed? It says don't use
to create paragraph spacing. But line breaks within address maybe okay? Better use separate

for each line. But that creates paragraph spacing. Could use

American Association...
444...
Washington...

.
allowed tag, but rule 2 says don't use
to create paragraph spacing. Address line breaks are not paragraph spacing? Could be okay. But to be safe, use separate

for each line. It may add spacing but acceptable. Or use

...

for organization name and address lines. Good.

Need maybe use

for small note? None.

Need maybe use

for indented paragraphs? Original paragraphs indented. Could use class indent for body paragraphs? Rule indentation alternative. Should we apply indent to paragraphs? It says 缩进 →

. Original paragraphs have first-line indent. Could mark all body paragraphs with class="indent"? But not necessary? To faithfully represent, maybe use indent for paragraphs that are indented. But if we use indent on all paragraphs, okay. However headings not. Lists? References not indented? Could use indent for normal paragraphs. But class allowed. Need not overuse. The example doesn't use indent. But original has indented paragraphs. Could use

for body paragraphs. But if table layout, indent may not matter. It's allowed. But if every paragraph indent, okay. Need ensure no style. I'd use

for normal paragraphs under headings, and maybe not for reference entries/addresses. But content rules don't require. Could avoid to reduce complexity.

Need maybe use

for page number only.

Potential issue: table class layout-columns with td containing h2/h3 and p. The table itself has no caption. Fine.

Let's draft final:

4.3—Trial batch record submittal

If past performance records for the proposed mixture proportions are not available, trial batches may be required by specification. When trial batches are used to establish strength relationships or to verify strength characteristics of the mixture, the least favorable combination of mixing water and air content should be used (ACI 211.1, ACI 301, ACI 318). This will provide a conservative estimate of strength. Trial batch procedures and report records should comply with ASTM C 192. 4.4—Resubmittals During the conduct of work, if any changes to the mixture proportions or materials are made, the revised proportions should demonstrate a compressive strength equal to or exceeding the current required average strength established by job records. CHAPTER 5—ADDITIONAL SUGGESTED DOCUMENTATION 5.1—Transmittal letter Each submittal should be introduced by an original transmittal letter identifying the proposed concrete mixture(s) to be furnished, the project for which it is submitted, and the method used to select proportions. The transmittal should be signed and dated by the person that prepared the submittal and the person selecting the mixture proportions. If more than one party contributed to the submittal, each contributor’s role should be identified. 5.2—Certification of compliance A statement certifying compliance of all materials proposed for the work, excepting those instances where a variance is requested, with the requirements of the contract documents is suggested. This can be conveniently handled by inclusion in the transmittal letter or by attaching separately. 5.3—Submittal forms The quantity of each ingredient, as described in Chapter 3, and the mixture proportions format should be prepared as an independent document suitable for distribution. There are several commercial, computerized formats available that conveniently handle source information, mixture proportions, physical properties of materials used to establish the proportions, and strength documentation. For this reason, a specified format is discouraged because it can either preclude the use of commercial computerized submittals, be repetitive in nature, or both. All of the information identified herein should be included on the submittal form(s) or in the documentation submitted. Additional data summarizing the past performance records or trial batch data should be integral parts of the submittal, as should special certification test data of materials. The form should be signed and dated by the person compiling or verifying the tabulation. CHAPTER 6—REFERENCES 6.1—Referenced standards and reports The standards and reports listed below were the latest editions at the time this document was prepared. Because these documents are revised frequently, the reader is advised to

contact the proper sponsoring group if it is desired to refer to the latest version. American Concrete Institute (ACI) 104R Preparation of Notation for Concrete ... American Society for Testing and Materials (ASTM) ... The publications listed above may be obtained from the following organizations: American Association of State Highway and Transportation Officials (AASHTO) 444 North Capitol Street NW, Suite 225 Washington, DC 20001 American Concrete Institute (ACI International) P.O. Box 9094 Farmington Hills, MI 48333-9094 American Society for Testing and Materials 100 Barr Harbor Drive West Conshohocken, PA 19428 6.2—Other references ACI Committee 201, 1992, “Guide to Durable Concrete, (ACI 201.2R-92),” American Concrete Institute, Farmington Hills, Mich., 41 pp.

4

Need check if h2 inside table after first h2 okay. Yes.

But first h2 outside table, then table left td includes 4.3 paragraph. The 4.3 heading not in left column. Could maybe put 4.3 heading in left td and put first h2 as something else? No.

Could we make first h2 be "4.3—Trial batch record submittal" and then table left td includes same heading? No duplicate prohibited. So okay.

Need maybe include 4.3 heading inside left td and make first element h2 outside but empty? No.

Could use

4.3—Trial batch record submittal

then table left td starts with

If past... Good.

Need maybe use class indent for paragraphs? If not, okay. But original indented. Could add class="indent" to body paragraphs. But if we add to all p in left/right, many. Allowed. But reference entries maybe not indented. I'd maybe add indent to normal paragraphs only: 4.3, 4.4, 5.1, 5.2, 5.3, 6.1, right continuation, publications sentence, 6.2. But not necessary. The rules say indentation alternative, not mandatory. To be safe with no style, class indent is allowed. But if we use indent, no harm. However if table layout, indent may be visually okay. But overuse could be considered altering? It represents original indentation. Let's use class="indent" for body paragraphs that are indented in original. But reference list entries are not indented? They are hanging? Could not. Addresses not. Use indent for main paragraphs.

Need ensure class single value. p class="indent" okay.

But if p class="indent" inside table, okay.

Need maybe use

contact...

because continuation paragraph indented? It is right column paragraph, likely indented. Use indent.

Need maybe use

The publications listed above...

. Good.

Need maybe use

ACI Committee 201...

. Good.

Need maybe use

for 5.3 second paragraph. Good.

Need maybe use

for 6.1. Good.

Need maybe not indent reference entries. Good.

Potential issue: The first h2 outside table not indented. Fine.

Need maybe use

CHAPTER 5—ADDITIONAL SUGGESTED DOCUMENTATION

centered? Original centered. Could use

? But it's heading. Allowed h2. Could not center heading because no style. Could use

? class allowed? It says only these class, but can class be on h2? It says only these class (small, single value). It doesn't restrict which tags can have class? Probably yes. But example uses p class. Could use h2 class="align-center"? Allowed class. But heading centered visually. However class align-center likely for p. It says 居中 →

...

. For headings, maybe not. Could use

CHAPTER 5...

no center. But original centered. Could use

CHAPTER 5...

instead of h2? But page内标题 should h2. Could use

? Is class allowed on h2? It says only these class, not only on p. But排版替代方案 says 居中 → p. To be safe, don't add class to h2. Or use

then

? No.

Maybe use

CHAPTER 5—ADDITIONAL SUGGESTED DOCUMENTATION

and accept not centered.

Need maybe use

CHAPTER 6—REFERENCES

.

Need maybe use

for 6.2. Good.

Need check disallowed: no div, no style, no nbsp. Good.

Need maybe table layout-columns with td containing h2 may cause first h2 outside but table not first. Good.

Potential issue: The output must be HTML fragment, no explanation. final only.

Let's consider if using table class layout-columns violates "每页输出必须以

开头" because after h2 there is table. It starts with h2. Good.

Need maybe include page number at end exactly

4

. Good.

Need maybe no blank lines? Fine.

Double-check text for typos:

- "mixture proportions are not available" yes.

- "least favorable combination of mixing water and air content" yes.

- "conservative estimate" yes.

- "Trial batch procedures and report records" yes.

- "During the conduct of work" yes.

- "current required average strength established by job records." yes.

- "ADDITIONAL SUGGESTED DOCUMENTATION" yes.

- "Each submittal should be introduced by an original transmittal letter identifying the proposed concrete mixture(s) to be furnished, the project for which it is submitted, and the method used to select proportions." yes.

- "The transmittal should be signed and dated by the person that prepared the submittal and the person selecting the mixture proportions." yes.

- "If more than one party contributed to the submittal, each contributor’s role should be identified." yes.

- "A statement certifying compliance of all materials proposed for the work, excepting those instances where a variance is requested, with the requirements of the contract documents is suggested." yes.

- "This can be conveniently handled by inclusion in the transmittal letter or by attaching separately." yes.

- "The quantity of each ingredient, as described in Chapter 3, and the mixture proportions format should be prepared as an independent document suitable for distribution." yes.

- "There are several commercial, computerized formats available that conveniently handle source information, mixture proportions, physical properties of materials used to establish the proportions, and strength documentation." yes.

- "For this reason, a specified format is discouraged because it can either preclude the use of commercial computerized submittals, be repetitive in nature, or both." yes.

- "All of the information identified herein should be included on the submittal form(s) or in the documentation submitted." yes.

- "Additional data summarizing the past performance records or trial batch data should be integral parts of the submittal, as should special certification test data of materials." yes.

- "The form should be signed and dated by the person compiling or verifying the tabulation." yes.

- "The standards and reports listed below were the latest editions at the time this document was prepared. Because these documents are revised frequently, the reader is advised to" yes.

Right:

- "contact the proper sponsoring group if it is desired to refer to the latest version." yes.

- ACI list:

104R Preparation of Notation for Concrete

116R Cement and Concrete Terminology

211.1 Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete

214 Recommended Practice for Evaluation of Strength Test Results of Concrete

301 Specifications for Structural Concrete

318 Building Code Requirements for Structural Concrete

544.3R Guide for Specifying, Mixing, Placing, and Finishing Steel Fiber Reinforced Concrete

ASTM:

C 29 Standard Test Method for Unit Weight and Voids in Aggregates

C 33 Standard Specification for Concrete Aggregates

C 127 Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate

C 128 Standard Test Method for Specific Gravity and Absorption of Fine Aggregate

C 172 Standard Practice for Sampling Freshly Mixed Concrete

C 192 Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory

C 260 Standard Specification for Air-Entraining Admixtures for Concrete

C 330 Standard Specification for Lightweight Aggregate for Structural Concrete

C 494 Standard Specification for Chemical Admixtures for Concrete

D 448 Classification for Sizes of Aggregate for Road and Bridge Construction

- "The publications listed above may be obtained from the following organizations:" yes.

- AASHTO address: "444 North Capitol Street NW, Suite 225" yes.

- "Washington, DC 20001" yes.

- "American Concrete Institute (ACI International)" yes.

- "P.O. Box 9094" yes.

- "Farmington Hills, MI 48333-9094" yes.

- "American Society for Testing and Materials" yes.

- "100 Barr Harbor Drive" yes.

- "West Conshohocken, PA 19428" yes.

- 6.2: "ACI Committee 201, 1992, “Guide to Durable Concrete, (ACI 201.2R-92),” American Concrete Institute, Farmington Hills, Mich., 41 pp." yes.

Need maybe italicize ACI/ASTM headings. Use em. Good.

Potential issue: h3 with em inside:

American Concrete Institute (ACI

Chapter 5—Additional suggested documentation, p. 211.5R-4

5.1—Transmittal letter

5.2—Certification of compliance

5.3—Submittal forms

Chapter 6—References, p. 211.5R-4

6.1—Referenced standards and reports

6.2—Other references

6.3—Suggested checklist

CHAPTER 1—INTRODUCTION

1.1—General

Project specifications, reference publications, drawings, and other contract documents contain the requirements for concrete materials, proportions, and characteristics. Concrete mixture proportions, intended to satisfy these requirements, are usually submitted based on field test results, laboratory trial batch test results, or both. The purchaser's acceptance of materials and proportions is based on conformance of the submitted details to the criteria contained in the contract documents.

1.2—Purpose

This guide provides information to assist in the submittal and review of materials and concrete mixture proportions. It is intended to benefit both the submitter and the reviewer. Beginning with the preparation of the concrete mixture proportions and supporting documentation by the concrete producer, followed by the actual submittal of the mixture proportions by the concrete contractor to the general contractor, and subsequently to the architect and engineer, each should find this information helpful.

1.3—Scope

This guide is limited to the preparation and review of the submittal of proposed materials and concrete mixture proportions for conformance with the requirements of the contract documents. It is not intended to impose additional requirements, but rather to help the user recognize and implement current ACI practices and procedures that may be required for the project.

1.4—Definitions

Admixture—A material other than water, aggregate, hydraulic cement, and fiber reinforcement, used as an ingredient of concrete or mortar and added to the batch immediately before or during its mixing (ACI 116R).

Aggregate—Granular material, such as sand, gravel, crushed stone, crushed hydraulic-cement concrete, or iron blast-furnace slag, used with a hydraulic cementing medium to produce either concrete or mortar (ACI 116R).

Aggregate, lightweight—Aggregate of low density, such as: expanded or sintered clay, shale, slate, diatomaceous shale, perlite, vermiculite, or slag; natural pumice, scoria, volcanic cinders, tuff, and diatomite; and sintered fly ash or industrial cinders, used in lightweight concrete (ACI 116R).

Cement, hydraulic—A cement that sets and hardens by chemical interaction with water and is capable of doing so underwater (ACI 116R).

Concrete—A composite material that consists essentially of a binding medium within which are embedded particles or fragments of aggregate, usually a combination of fine aggregate and coarse aggregate; in portland-cement concrete, the binder is a mixture of portland cement and water, with or without admixtures (ACI 116R).

f^′_c—Specified compressive strength of concrete used in design (ACI 104R).

f^′_cr—Required average compressive strength of concrete, used as the basis for selection of concrete proportions (ACI 104R).

Fiber reinforcement—Discontinuous discrete fibers produced from steel, synthetic (organic), glass, or natural materials, in various shapes and sizes that are added before or during mixing of the concrete.

Materials, cementitious—Cements and pozzolans used in concrete and masonry construction (ACI 116R).

Water-cementitious materials ratio—The ratio of the mass of water, exclusive only of that absorbed by the aggregate, to the mass of cementitious material (hydraulic) in concrete, mortar, or grout (ACI 116R).

CHAPTER 2—MATERIALS AND PRODUCTION

2.1—Quality of materials

Cementitious materials, aggregates, admixtures, fibers, and water should comply with the contract documents. Evidence of satisfactory performance of each material should be provided on request. If a deviation from the specified material is necessary, a full explanation to the architect and engineer should be included in the submittal.

2.2—Submittal information

Cement/cementitious materials—The source and type of each material proposed for use on the project should be identified and included. Mill test reports, manufacturer's certification of compliance, or both, should be submitted, if required, or be available upon request by the purchaser.

Aggregates—The sources, types, and individual gradings for each aggregate should be identified. In conformance with ASTM C 33 and C 330, the combined gradings of the total blended aggregate when combined aggregate concepts are used and should be included for each mixture as described in ACI 301. The fineness modulus of fine aggregate should be reported. The saturated-surface-dry (SSD) specific gravity and absorption of all aggregates as per ASTM C 127 and C 128, and dry-rodded unit weight for coarse aggregate as per ASTM C 29, should be provided. Similarly, loose unit weight of lightweight aggregate (oven dry) should be provided when lightweight aggregate is used.

For coarse aggregates, the size designation (as described in ASTM C 29, C 33, C 330, or D 448) or the nominal maximum size is needed. Because all of these aggregate properties influence the proportioning of the concrete mixture, they should be submitted to support the proposed mixture proportions.

2

GUIDE FOR SUBMITTAL OF CONCRETE PROPORTIONS

Admixtures—The vendor and type of all admixtures proposed for use being identified in accordance with ASTM C 260, C 494, or another governing standard. These admixtures should be of the same type as those used in the trial mixtures from which strength data were obtained. If admixtures are to be added at a point other than the concrete batching facilities, the location should be identified. Water—The source of mixing water should be identified. Nonpotable water requires evidence of satisfactory use in mortar or concrete in accordance with ASTM C 94, Table 2. Some specifications may restrict the chloride-ion content of the concrete. Chloride-ion content—Evidence of soluble chloride-ion content for each ingredient or for the hardened concrete may be required. Fibers, color pigments, and other additions—Where the source and type of specific additions are required by the contract, they should be contained in mixtures from which strength data were obtained. Materials identified in the submittal as alternates to products specified by name should include evidence of satisfactory performance and compliance to appropriate material standards. Production—Information supporting compliance with the contract documents or ASTM C 94 should be available upon request by the purchaser. If more than one production facility is proposed for use, the above information should be available for each facility. CHAPTER 3—CONCRETE MIXTURE PROPORTIONS 3.1—Proportioning The concrete mixture proportions expressed in terms of quantity of each component per unit volume of concrete, combined with the freshly mixed concrete properties and the hardened concrete characteristics, constitute the submittal. The mass and the absolute volume contributed by each material in the mixture should be included in the submittal of the mixture proportions. Omission of components, quantities, or properties by the submitter may result in rejection of the submittal. 3.2—Quantities by mass The quantity of cementitious material added in the powder state should be expressed as pound-mass per cubic yard (lb/yd3) or kilograms per cubic meter (kg/m3). Pozzolans that are added in a slurry should have their respective solid and water contents expressed as pound-mass per cubic yard or kilograms per cubic meter. The quantity of each separately batched size of coarse aggregate and fine aggregate should be expressed as pound-mass per cubic yard or kilograms per cubic meter in an SSD condition. If lightweight aggregate is used, the oven-dry and estimated wet weight should be stated. Admixtures dispensed as liquids should be expressed as fluid ounces per cubic yard (fl oz/yd3) or liters per cubic meter (L/m3) and where applicable, the expected dosage range should be stated. The quantity of any premeasured, prepackaged additives, such as fibers or color pigments, should be expressed in incremental units (sacks, bags, boxes, or tins) and pound-mass per cubic yard or kilograms per cubic meter.

3.3—Quantities by volume The absolute volume of each material, air content, and the total sum of the absolute volumes of all materials should be provided in cubic feet (ft3) or cubic meters (m3). If lightweight aggregate is used, the bulk volume in the saturated condition should be stated. It is customary and acceptable in most localities to proportion mixtures to yield slightly in excess of 27.00 ft3/yd3 or (1.00 m3/m3). The practice provides producers with a systematic means of handling charges of short yield due to air content fluctuation provided that the actual expected yield is identified in the submittal. 3.4—Freshly mixed concrete properties Slump, unit weight, and air content should be reported for each set of mixture proportions intended for use. Placement methods, such as pumping and slip forming, associated with each proposed mixture should be indicated where appropriate. Sometimes, different freshly mixed concrete properties will be needed for different placement procedures and conditions; these should be consistent with the limits set in the contract documents. When the concrete is to be delivered to the point of placement by concrete pump or other conveyance, the location at which the above properties are to be achieved should be clarified in advance. Sampling of the concrete should be in accordance with ASTM C 172. CHAPTER 4—DOCUMENTATION OF COMPRESSIVE STRENGTH 4.1—Required average strength (f'cr) A submittal of concrete mixture proportions should demonstrate a compressive strength equal to or exceeding the required average strength (f'cr). Provisions for calculating f'cr are contained in ACI 211.1, ACI 214, ACI 301, and ACI 318. The required average strength is based on the specified compressive strength (f'c) for a class of concrete, which should include an overdesign amount as found in ACI 301, and ACI 318, when based