Lightweight Aggregate Concrete

Lightweight Aggregate Concrete

1st Edition - October 28, 2002

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  • Authors: Satish Chandra, Leif Berntsson
  • eBook ISBN: 9780815518204

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Description

In spite of the increasing use and demand for lightweight aggregate concrete (LWAC), there is still a lack of adequate explanations to understand the mechanisms responsible for the strength and durability properties of LWAC. This book is written to give an overall picture of LWAC, from the historical background, aggregate production, proportioning and production of concrete, to applications in structures. Physical properties and chemical durability are described in detail. The physical properties include density, strength, shrinkage, and elasticity. Chemical durability includes resistance to acids, chloride ingress, carbonation, and freeze-thaw resistance. Fire resistance is also included, which is seldom considered, but is a very important aspect of the safety of the structure. Microstructure development and its relation to the durability properties of LWAC generally are not highlighted in the literature. The development of bonds, the microstructure with different binder systems, and different types of lightweight aggregates are explained. They show how lightweight aggregate concrete differs from normal weight concrete. The chapters on chloride ingress and freeze-thaw resistance are detailed because of the use of LWAC in offshore construction. The economical aspects of using LWAC are also reviewed. Emphasis is placed on the fact that although the cost of LWAC is high, the total cost of construction has to be considered, including the cost of transport, reinforcement, etc. When these are considered then LWAC becomes cheaper and attractive. The life cycle cost of the concrete is another consideration for calculating long-term savings on maintenance costs.

Readership

Scientists, researchers, engineers and technicians in the concrete industry. Also useful for architects and materials engineers.

Table of Contents

  • Historical Background of Lighweight Aggregate Concrete
    Introduction
    Lightweight Aggregates
    Concluding Remarks
    Production of Lightweight Aggregates and Its Properties
    Introduction
    Industrial Kilns
    Natural Lightweight Aggregates
    Production Techniques
    Concluding Remarks
    Supplementary Cementing Materials
    Introduction
    High Performance Cement
    Mineral Admixtures
    LWAC With a Mineral Admixture
    Superplasticizers
    Concluding Remarks
    Mix Proportioning
    Introduction
    Mix Proportioning of No-Fines LWAC
    Mix Proportioning of Structural Lightweight Aggregate Concrete
    Concluding Remarks
    Production Techniques
    Introduction
    Lightweight Aggregate and Its Supply
    Remarks on Mix Design
    Batching
    Transportation and Placing of Concrete
    Testing of LWAC Related to Production
    Concluding Remarks
    Lightweight Aggregate Concrete Microstructures
    Interfaces in Concrete
    Pore Structure of Lightweight Aggregate
    Microstructure of the Interfacial Transition Zone
    Inter-relation of Microstructure and the Strength of LWAC
    Concluding Remarks
    Physical Properties of Lightweight Aggregate Concrete
    Introduction
    Density and Strength
    Elastic Compatibility and Microcracking Shrinkage and Creep of LWAC
    Thermal Conductivity of LWAC
    Abrasion Resistance
    Concluding Remarks
    Durability of Lightweight Aggregate Concrete to Chemical Attack
    Introduction
    Acid Resistance
    Alkali-Aggregate Reaction
    Carbonation and Corrosion
    Chloride Ion Penetration
    Fire Resistance of Lightweight Aggregate Concrete
    Introduction
    Behavior of Concrete at Elevated Temperature
    Fire Test of LWAC
    Fire Protection
    Concluding Remarks
    Freeze-Thaw Resistance of Lightweight Aggregate Concrete
    Introduction
    Hydrostatic Pressure
    Osmotic Pressure
    Scaling Mechanism
    Freeze-Thaw Resistance of LWAC
    Field Tests
    Concluding Remarks
    Applications of Lightweight Aggregate Concrete
    Lightweight Concrete and Thermal Insulation
    Lightweight Aggregates - Horticulture Applications
    LWAC in Shipbuilding
    LWAC in the Building Industry
    Advantages and Disadvantages of Using LWAC
    Economical Aspects of Using LWAC
    Examples of Applications
    Glossary
    Index

Product details

  • No. of pages: 450
  • Language: English
  • Copyright: © William Andrew 2002
  • Published: October 28, 2002
  • Imprint: William Andrew
  • eBook ISBN: 9780815518204

About the Authors

Satish Chandra

Leif Berntsson

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