Description
The guide summarizes the present state of technology. It presents and interprets the data on lightweight-aggregate concrete from many laboratory studies, accumulated experience resulting from successful use, and the performance of structural lightweight-aggregate concrete in service.
This guide includes a definition of lightweight-aggregate concrete for structural purposes, and discusses, in condensed fashion, the production methods for and inherent properties of structural lightweight aggregates. Other chapters follow on current practices for proportioning, mixing, transporting, and placing; properties of hardened concrete; and the design of structural concrete with reference to ACI 318.
Keywords: abrasion resistance; aggregate; bond; contact zone; durability; fire resistance; internal curing; lightweight aggregate; lightweight concrete; mixture proportion; shear; shrinkage; specified density concrete; strength; thermal conductivity.
Table of Contents
Chapter 1—Introduction
1.1—Objectives
1.2—Historical background
1.3—Terminology
1.4—Economy of lightweight concrete
Chapter 2—Structural lightweight aggregates
2.1—Internal structure of lightweight aggregates
2.2—Production of lightweight aggregates
2.3—Aggregate properties
Chapter 3—Proportioning, mixing, and handling
3.1—Scope
3.2—Mixture proportioning criteria
3.3—Materials
3.4—Proportioning and adjusting mixtures
3.5—Mixing and delivery
3.6—Placing
3.7—Pumping lightweight concrete
3.8—Laboratory and field control
Chapter 4—Physical and mechanical properties of structural lightweight-aggregate concrete
4.1—Scope
4.2—Method of presenting data
4.3—Compressive strength
4.4—Density of lightweight concrete
4.5—Specified-density concrete
4.6—Modulus of elasticity
4.7—Poisson’s ratio
4.8—Creep
4.9—Drying shrinkage
4.10—Splitting tensile strength
4.11—Modulus of rupture
4.12—Bond strength
4.13—Ultimate strength factors
4.14—Durability
4.15—Absorption
4.16—Alkali-aggregate reaction
4.17—Thermal expansion
4.18—Heat flow properties
4.19—Fire endurance
4.20—Abrasion resistance
Chapter 5—Design of structural lightweight-aggregate concrete
5.1—Scope
5.2—General considerations
5.3—Modulus of elasticity
5.4—Tensile strength
5.5—Shear and diagonal tension
5.6—Development length
5.7—Deflection
5.8—Columns
5.9—Prestressed lightweight concrete
5.10—Thermal design considerations
5.11—Seismic design
5.12—Fatigue
5.13—Specifications
Chapter 6—High-performance lightweight concrete
6.1—Scope and historical developments
6.2—Structural efficiency of lightweight concrete
6.3—Applications of high-performance lightweight concrete
6.4—Reduced transportation cost
6.5—Enhanced hydration due to internal curing
Chapter 7—References
7.1—Referenced standards and reports
7.2—Cited references
7.3—Other references