ACI PRC-308-213-13(22) Report on Internally Cured Concrete Using Prewetted Absorptive Lightweight Aggregate (Reapproved 2022)

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Description

This report introduces the concepts of and describes the process benefit and applications for using prewetted lightweight aggregate to increase cement hydration in internally cured concrete. It also describes mixture proportioning and absorptive material selection and discusses the benefits relating to sustainability. The materials, processes, quality control measures, and inspections described should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent.

Keywords:

absorption; curing; desorption; durability; high-performance concrete; hydration; internal curing; internally cured concrete; lightweight aggregate; outside curing; permeability; saturated-surface-dry; shrinkage; strength; supplementary cementitious materials; water movement.

 

Document Details

Author: ACI Committees 308, 213

Publication Year: 2013

Pages: 16

ISBN: 9780870318214

Categories: Curing

Formats: Protected PDF/Web View, ePub, or Kindle

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE, p. 2

1.1—Introduction, p. 2

1.2—Scope, p. 2

CHAPTER 2—NOTATION AND DEFINITIONS, p. 2

2.1—Notation, p. 2

2.2—Definitions, p. 2

CHAPTER 3—PROCESS, p. 3

3.1––General, p. 3

3.2—Justification, p. 3

3.3—Water movement, p. 3

3.4—Autogenous shrinkage and self-desiccation, p. 3

3.5—Mechanism of internal curing , p. 3

3.6—Water movement during hydration observed using X-ray microtomography, p. 4

CHAPTER 4—INTERNALLY CURED CONCRETE (ICC): EFFECTS, BENEFITS, AND APPLICATIONS, p. 4

4.1—Early-age shrinkage reduction, p. 4

4.2—Crack reduction, p. 5

4.3—Compressive strength, p. 5

4.4—Overdosing prewetted lightweight aggregate (PLA), p. 6

4.5—Flexural strength, p. 6

4.6—Mitigation of warping and dimensional stability, p. 6

4.7—Modulus of elasticity, p. 6

4.8—Permeability and resistance to deicing chemicals, p. 7

4.9—Creep, p. 7

4.10—Durability, p. 8

CHAPTER 5—BATCHING PROCEDURES, p. 8

5.1—Choice of absorptive material, p. 8

5.2—Mixture proportioning using absorptive materials, p. 8

5.3—Prewetting lightweight aggregate, p. 10

5.4—Concrete batching, mixing, transporting, placing, and finishing, p. 10

CHAPTER 6—SUSTAINABLE CONCRETE CONSTRUCTION USING INTERNALLY CURED CONCRETE (ICC), p. 11

CHAPTER 7—REFERENCES, p. 11

ERRATA INFO

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