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ACI 211.1 91:1991 Edition

ACI 211.1 91:1991 Edition

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211.1-91: Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete (Reapproved 2009)

Published By Publication Date Number of Pages
ACI 1991 38
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This publication describes methods for selecting and adjusting proportions for normal weight concrete. The procedures take into consideration the requirements for placeability, consistency, strength, and durability. Example calculations are shown, including adjustments based on the characteristics of the first trial batch. The proportioning of heavyweight concrete for such purposes as radiation shielding and bridge counterweight structures is described. Keywords: absorption; admixtures; aggregates; blast-furnace slag; cementitious materials; concrete durability; concretes; consistency; durability; exposure; fine aggregates: fly ash; heavyweight aggregates; heavyweigh concretes ;mass concrete ;mix proportioning; pozzolans; quality control; radiation shielding; silica fume; slump tests; volume; water-cement ratio; water-cementitious ratio; workability.

PDF Catalog

PDF Pages PDF Title
1 CONTENTS
2 CHAPTER 1 – SCOPE
1.1
1.2
1.3
1.4
CHAPTER 2 – INTRODUCTION
2.1
2.2
2.3
2.4
2.5
CHAPTER 3 – BASIC RELATIONSHIP
3.1
3 3.2 Placeability
3.3 Consistency
3.4 Strength
3.5 Water-cement or water-cementitious ratio [w/c or w/(c
+ p) ]
3.6 Durability
3.7 Density
3.8 Generation of heat
4 CHAPTER 4- EFFECTS OF CHEMICAL ADMIXTURES,
POZZOLANIC, AND OTHER MATERIALS ON
CONCRETE PROPORTIONS
4.1 Admixtures
4.2 Air-entraining admixture
4.3 Chemical admixtures
5 4.4 Other cementitious materials
6 4.4.1
4.4.2
4.4.3
4.4.4
7 CHAPTER 5 – BACKGROUND DATA
5.1
5.2
5.2.2
5.2.3
5.3
CHAPTER 6 – PROCEDURE
6.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.3
6.3.1 Step 1. Choice of slump
6.3.2 Step 2. Choice of maximum size of aggregate
8 6.3.3 Step 3. Estimation of mixing water and aircontent
9 6.3.4 Step 4. Selection of water-cement or watercementitiousmaterials ratio
12 6.3.5 Step 5. Calculation of cement content
6.3.6 Step 6. Estimation of coarse aggregate content
6.3.6.1
6.3.7 Step 7. Estimation of fine aggregate content
6.3.7.1
13 6.3.7.2
6.3.8 Step 8. Adjustments for aggregate moisture
6.3.8.1
6.3.8.2
6.3.9 Step 9. Trial batch adjustments
6.3.9.1
6.3.9.2
6.3.9.3
6.3.9.4
CHAPTER 7 – SAMPLE COMPUTATIONS
7.1
7.1.1
14 7.1.2
7.1.3
7.1.4
7.2 Example 1
7.2.1 Step 1
7.2.2 Step 2
7.2.3 Step 3
7.2.4 Step 4
7.2.5 Step 5
7.2.6 Step 6
7.2.7 Step 7
7.2.7.1 Weight basis
7.2.7.2 Absolute volume basis
7.2.7.3
15 7.2.8 Step 8
7.2.9 Step 9
7.2.9.1
7.2.9.2
7.2.9.3
7.2.9.4
7.2.10
7.2.10.1
7.2.10.2
16 7.2.10.3
7.2.10.4
7.2.10.5
7.3 Example 2
7.3.1 Step 1
7.3.2 Step 2
7.3.3 Step 3
7.3.4 Step 4
7.3.5 Step 5
17 7.3.6 Step 6
7.3.7 Step 7
7.3.7.1 Weight basis
7.3.7.2 Absolute volume basis
7.3.7.3
7.3.8 Step 8
7.3.9 Step 9
18 7.3.9.1
7.3.9.2
7.3.9.3
7.3.9.4
7.3.10
CHAPTER 8 – REFERENCES
8.1 – Recommended references
19 8.2 – Cited references
8.3 – Additional references
21 APPENDIX 1- METRIC (SI) SYSTEM ADAPTATION
A1.1
A1.2
A1.6.3 Steps in calculating proportions
A1.6.3.1 Step 1. Choice of slump
A1.6.3.2 Step 2. Choice of nominal maximum sizeof aggregate.
A1.6.3.3 Step 3. Estimation of mixing water andair content
A1.6.3.4 Step 4. Selection of water-cement ratio
A1.6.3.5 Step 5. Calculation of cement content
A1.6.3.6 Step 6. Estimation of coarse aggregatecontent
A1.6.3.7 Step 7. Estimation of fine aggregatecontent
A1.6.3.9 Step 9. Trial batch adjustments
A1.6.3.9.1
A1.6.3.9.2
22 A1.6.3.9.3
23 APPENDIX 2 – EXAMPLE PROBLEM IN METRIC (SI) SYSTEM
A2.1 Example 1
A2.2
A2.2.1 Step 1
A2.2.2 Step 2
A2.2.3 Step 3
A2.2.4 Step 4
A2.2.5 Step 5
A2.2.6 Step 6
A2.2.7 Step 7
A2.2.7.1 Mass basis
A2.2.7.2 Absolute volume basis
24 A2.2.7.3
A2.2.8 Step 8
A2.2.9 Step 9
A2.2.9.1
A2.2.9.2
A2.2.9.3
25 A2.2.9.4
A2.2.10
A2.2.10.1
A2.2.10.2
A2.2.10.3
A2.2.10.4
A2.2.10.5
26 APPENDIX 3 – LABORATORY TESTS
A.3.1
A3.2 Properties of cement
A3.2.1
A3.2.2
A3.3 Properties of aggregate
A3.3.1
A3.3.2
A3.3.3
A3.4 Trial batch series
A3.4.1
A3.4.2
A3.4.3
27 A3.4.4
A3.4.5
A3.4.6
A3.5 Test methods
A3.5.1
A3.5.1.1
A3.5.1.2
28 A3.6 Mixes for small jobs
A3.6.1
A3.6.2
APPENDIX 4 – HEAVYWEIGHT CONCRETE MIX PROPORTIONING
A4.1
A4.1.1
A4.1.2
A4.1.3
A4.2
A4.3 Preplaced heavyweight concrete
A4.4 Example
29 A4.4.1 Step 1
A4.4.2 Step 2
A4.4.3 Step 3
A4.4.4 Step 4
A4.4.5 Step 5
A4.4.6 Step 6
A4.4.7 Step 7
30 APPENDIX 5 – MASS CONCRETE MIX PROPORTIONING
A5.1 Introduction
A5.2 Mass concrete properties
A5.3 Properties of material related to heat generation
A5.3.1 Cementitious materials
A5.3.1.1 Portland cement
31 A5.3.1.2 Blended hydraulic cements
A5.3.1.3 Pozzolans
A5.3.2 Aggregates
A5.3.2.1 Coarse aggregate combination
32 A5.3.2.2 Coarse aggregate content
33 A5.3.3 Admixtures
A5.3.3.1 Air entrainment
A5.3.3.2 Water-reducing admixture
A5.4 Strength and durability
34 A5.5 Placement and workability
A5.6 Procedure
A5.6.1 Step 1
A5.6.2 Step 2
35 A5.6.3 Step 3
A5.6.4 Step 4
A5.6.5 Step 5
A5.6.6 Step 6
A5.6.7 Step 7
A5.6.8 Step 8
A5.6.9 Step 9
A5.6.10 Step 10
A5.6.11 Step 11
A5.6.12 Step 12
A5.7 Example problem
36 A5.7.1 Step 1
A5.7.2 Step 2
A5.7.3 Step 3
A5.7.4 Step 4
A5.7.5 Step 5
A5.7.6 Step 6
37 A5.7.7 Step 7
A5.7.8 Step 8
A5.7.9 Step 9
A5.7.10 Step 10
38 A5.7.11 Step 11
A5.7.12 Step 12
A5.7.13 Trial batch
A5.8

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