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ACI 302.2R 06 2006

ACI 302.2R 06 2006

$41.98

302.2R-06: Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials

Published By Publication Date Number of Pages
ACI 2006 42
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This guide contains materials, design, and construction recommendations for concrete slabs-on-ground and suspended slabs that are to receive moisture-sensitive flooring materials. These flooring materials include sheet rubber, epoxy coatings, vinyl composition tile, sheet vinyl, carpet, athletic flooring, laminates, and hardwood. Chapters 1 through 8 provide an understanding of concrete moisture behavior and drying, and show how recommended construction practices can contribute to successful performance of floor covering materials. This background provides a basis for the recommendations in Chapter 9 to improve performance of floor covering materials in contact with concrete moisture and alkalinity. Because this guide is specific to floor moisture problems and solutions, refer to the most current editions of both ACI 302.1R, “Guide for Concrete Floor and Slab Construction,” and ACI 360R, “Design of Slabs-on-Ground,” for general information. These two documents contain guidance on floor design and construction that is needed to achieve successful floor covering performance. Keywords: admixtures; cracking; curing; curling; drying; mixture proportioning; moisture movement; moisture test; relative humidity; slab-on-ground; specifications; vapor retarder/barrier.

PDF Catalog

PDF Pages PDF Title
1 CONTENTS
2 CHAPTER 1— INTRODUCTION AND BACKGROUND
1.1— Introduction
1.2—Flooring moisture issues
1.3—Concrete slabs that receive flooring materials
1.4—Changes in construction methods and materials that affect floor systems
3 1.5—Floor flatness changes with time
4 1.6—Other considerations
5 CHAPTER 2— CONCRETE MOISTURE BASICS
2.1— Introduction
2.2—Moisture movement
2.2.1 Drying of concrete slab-on-ground
2.2.2 Drying of suspended concrete slab
6 2.2.3 Drying of concrete slab-on-ground with water or water vapor below
2.3—Concrete drying profiles
2.3.1 Hanson (1968)
2.3.2 Abrams and Orals (1965)
2.3.3 Carrier et al. (1975)
7 2.3.4 Initial moisture profile
2.4—Effects of moisture movement
2.4.1 Slab curling
8 2.4.2 Joint bulging
9 2.4.3 Moisture movement effects on testing
10 2.5—Equilibrium moisture content
2.6—Drying and wetting of concrete
2.6.1 Adsorption and desorption effects
11 2.6.2 Effect of sorption hysteresis on testing
2.6.3 Rewetting of concrete
12 2.7—Moisture loss during drying
CHAPTER 3— CONCRETE MOISTURE TESTING
3.1— Introduction
3.2—Standard guides and test methods
13 3.3—Qualitative and quantitative tests
3.3.1 Introduction
3.3.2 Plastic sheet test
3.3.3 Mat and primer tests
14 3.3.4 Moisture meters
3.3.5 Calcium chloride tests
15 3.3.6 Relative humidity test
3.4—Test parameters
3.4.1 Test frequency
16 3.4.2 Test location
3.4.3 Test environment
17 3.4.4 Surface preparation
3.4.5 Responsible testing party
3.4.6 Acceptance criteria
18 3.4.7 Using multiple test methods
3.4.8 Modified surface testing
3.4.9 Testing with no vapor retarder/barrier directly under
concrete
3.5—Underlayment testing
3.6—Comments on moisture vapor emission rate tests
19 CHAPTER 4— CONCRETE pH TESTING
4.1— Introduction
20 4.2—Test methods
4.3—ASTM test differences
4.4—Factors affecting pH test results
4.4.1 Wetting time
4.4.2 Test kit components
4.4.3 Carbonation
4.4.4 Surface preparation
21 4.4.5 Adhesive water
4.4.6 Number of tests
CHAPTER 5— FLOOR COVERING AND ADHESIVE MANUFACTURER’S RECOMMENDATIONS
5.1— Introduction
5.2—Manufacturer’s recommendations
5.2.1 Vapor retarder/barrier
22 5.2.2 Concrete materials and properties
5.2.3 Curing
5.2.4 Surface finish
5.2.5 Floor flatness
5.2.6 Moisture condition
5.2.7 pH
5.2.8 Surface preparation
23 5.2.9 Repairs
5.3—Dealing with multiple floor covering requirements
CHAPTER 6— DRYING OF CONCRETE
6.1— Introduction
24 6.2—Concrete drying with no external source of moisture
6.3—Concrete drying: exposed to moisture from below
25 6.4—Concrete drying: exposed to moisture from above
6.5—Concrete drying from both sides
26 6.6—Effect of concrete-making materials
6.7—Effect of fresh and hardened concrete properties
6.8—Effect of thickness
6.9—Effect of curing
27 6.10—Drying of mature concrete
6.11—Effect of drying environment
28 6.12—Drying at exposed edge
6.13—Drying of lightweight concrete
CHAPTER 7— VAPOR RETARDER/BARRIER
7.1— Introduction
7.1.1 Composition
29 7.1.2 Vapor retarders and vapor barriers
7.2—Vapor retarder/barrier location
7.2.1 Benefits of concrete placed on granular layer
7.2.2 Benefits of concrete placed directly on vapor
retarder/barrier
7.2.3 Granular layer as water reservoir
30 7.2.4 ACI 302/360 Task Group recommendations on vapor retarder/barrier location
7.3—Vapor transmission through retarder/barrier
7.3.1 Perm rating
7.3.2 Water vapor transmission through punctures
32 7.3.3 Puncture resistance
7.3.4 Effectiveness of vapor retarder/barrier in reducing water vapor inflow
7.3.5
CHAPTER 8— FLOOR COVERING MATERIALS
8.1— Introduction
33 8.2—Communication between architect and engineer
8.3—Floor covering technical resources
8.4—Floor adhesives and coverings
8.4.1 Adhesives
8.4.2 Floor coverings
34 8.5—Effect of moisture in flooring adhesives
8.6—Effect of concrete moisture on adhesive performance
35 CHAPTER 9— DESIGN AND CONSTRUCTION RECOMMENDATIONS
9.1— Introduction
9.2—Testing
36 9.3—Vapor retarder/barrier
37 9.4—Concrete materials
9.5—Concrete properties
9.5.1 Selecting a w/cm
9.6—Surface finish
38 9.6.1 Floor flatness
9.7—Curing
9.8—Surface preparation
39 9.9—Repairs
9.10—Protection
9.11—Moisture mitigation
CHAPTER 10— REFERENCES
10.1— Referenced standards and reports
40 10.2—Cited references
41 APPENDIX— TWO CASE STUDIES OF MOISTURE-RELATED FLOORING PROBLEMS
A.1— Value engineering results in flooring failure
42 A.2— Postconstruction trench drains results in flooring failure

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ACI 302.2R 06 2006
$41.98