Lightweight Aggregate Concrete is written to give an overall picture of lightweight aggregate concrete (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. Fire resistance is also included, which is seldom considered, but is a very important aspect of the safety of the structure.
Lightweight Aggregate Concrete explains the development of bonds, the microstructure with different binder systems, and different types of lightweight aggregates. 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. 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.
Contents
- Historical Background of Lighweight Aggregate Concrete
- Production of Lightweight Aggregates and Its Properties
- Industrial Kilns
- Natural Lightweight Aggregates
- Production Techniques
- Supplementary Cementing Materials
- High Performance Cement
- Mineral Admixtures
- LWAC With a Mineral Admixture
- Superplasticizers
- Mix Proportioning
- Mix Proportioning of No-Fines LWAC
- Mix Proportioning of Structural Lightweight Aggregate Concrete
- Production Techniques
- Lightweight Aggregate and Its Supply
- Remarks on Mix Design
- Batching
- Transportation and Placing of Concrete
- Testing of LWAC Related to Production
- 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
- Physical Properties of Lightweight Aggregate Concrete
- Density and Strength
- Elastic Compatibility and Microcracking
- Shrinkage and Creep of LWAC
- Thermal Conductivity of LWAC
- Abrasion Resistance
- 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
- Freeze-Thaw Resistance of Lightweight Aggregate Concrete
- Hydrostatic Pressure
- Osmotic Pressure
- Scaling Mechanism
- Freeze-Thaw Resistance of LWAC
- Field Tests
- 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
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