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Lightweight Aggregate Concrete

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Title: Lightweight Aggregate Concrete
Author: Leif Berntsson, Satish Chandra
ISBN: 0815514867 / 9780815514862
Format: Hard Cover
Pages: 450
Publisher: William Andrew
Year: 2002
Availability: Out of Stock
  • Description
  • Contents

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.

Historical Background of Lighweight Aggregate Concrete
Lightweight Aggregates
Concluding Remarks
Production of Lightweight Aggregates and Its Properties
Industrial Kilns
Natural Lightweight Aggregates
Production Techniques
Concluding Remarks
Supplementary Cementing Materials
High Performance Cement
Mineral Admixtures
LWAC With a Mineral Admixture
Conclding Remarks
Mix Proportioning
Mix Proportioning of No-Fines LWAC
Mix Proportioning of Structural Lightweight Aggregate Concrete
Concluding Remarks
Production Techniques
Lightweight Aggregate and Its Supply
Remarks on Mix Design
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
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
Acid Resistance
Alkali-Aggregate Reaction
Carbonation and Corrosion
Chloride Ion Penetration
Fire Resistance of Lightweight Aggregate Concrete
Behavior of Concrete at Elevated Temperature
Fire Test of LWAC
Fire Protection
Concluding Remarks
Freeze-Thaw Resistance of Lightweight Aggregate Concrete
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

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