An overview of Ultra Lightweight Concrete is presented in this article, including its definition, characteristics, and differences from Traditional concrete.
Lightweight concrete with a dry density of less than 800 kg/m3, called ultra-lightweight concrete or super lightweight concrete, is a state of the art concrete in terms of density and insulation properties.
By carefully proportioning and mixing Cementitious materials, lightweight aggregates, admixtures, and water, ultra lightweight concrete is produced. Low thermal conductivity and low compressive strength make it suitable for thermal insulation applications.
Features of Ultra-lightweight Concrete
Low to moderate compressive strength, as well as low thermal conductivity, defines ultra light concrete. Ultra lightweight aggregates have a density below 800 kilograms per cubic meter.
The density of lightweight concrete must not exceed this value. In addition to its robustness, durability, and energy saving properties, ultra lightweight concrete facades are easy to construct.
Materials of Ultra-lightweight Concrete
This type of construction process requires water. Materials such as Cementitious materials are briefly mentioned below:
1. High strength cement. 2. Blast furnace cement. 3. Limestone powder. 4. Nano silica. 5. Alkali activated materials. 6. Ground granulated blast furnace slag. 7. Powder coal fly ash. 8. Silica fume and micro silica.
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