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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. 42 pp.
ACI 302.2R-06 - Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials
- Table of Contents:
Introduction and background
Introduction
Flooring moisture issues
Concrete slabs that receive flooring materials
Changes in construction methods and materials that affect floor systems
Floor flatness changes with time
Other considerations
Chapter 2-Concrete moisture basics, p. 302.2R-5
Introduction
Moisture movement
Concrete drying profiles
Effects of moisture movement
Equilibrium moisture content
Drying and wetting of concrete
Moisture loss during drying
Concrete moisture testing, p. 302.2R-12
Introduction
Standard guides and test methods
Qualitative and quantitative tests
Test parameters
Underlayment testing
Comments on moisture vapor emission rate tests
Concrete pH testing, p. 302.2R-19
Introduction
Test methods
ASTM test differences
Factors affecting pH test results
Floor covering and adhesive manufacturer’s recommendations, p. 302.2R-21
Introduction
Manufacturer’s recommendations
Dealing with multiple floor covering requirements
Drying of concrete, p. 302.2R-23
Introduction
Concrete drying with no external source of moisture
Concrete drying: exposed to moisture from below
Concrete drying: exposed to moisture from above
Concrete drying from both sides
Effect of concrete-making materials
Effect of fresh and hardened concrete properties
Effect of thickness
Effect of curing
Drying of mature concrete
Effect of drying environment
Drying at exposed edge
Drying of lightweight concrete
Vapor retarder/barrier, p. 302.2R-28
Introduction
Vapor retarder/barrier location
Vapor transmission through retarder/barrier
Floor covering materials, p. 302.2R-32
Introduction
Communication between architect and engineer
Floor covering technical resources
Floor adhesives and coverings
Effect of moisture in flooring adhesives
Effect of concrete moisture on adhesive performance
Design and construction recommendations, p. 302.2R-35
Introduction
Testing
Vapor retarder/barrier
Concrete materials
Concrete properties
Surface finish
Curing
Surface preparation
Repairs
Protection
Moisture mitigation
References, p. 302.2R-39
Referenced standards and reports
Cited references
Appendix-Two case studies of moisture-related flooring problems, p. 302.2R-41
A.1-Value engineering results in flooring failure
A.2-Postconstruction trench drains results in flooring failure
ACI 302.2R-06 - Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials
ACI 302.2R-06 - Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials
