Lightweight self-consolidating concrete (LWSCC) is a type of concrete that combines the self-consolidating property with lightweight aggregates to produce a high-performance and lightweight concrete. LWSCC is made using a combination of cement, water, fine aggregates, lightweight aggregates, and chemical admixtures.
The lightweight aggregates used in LWSCC can be natural or artificial, and they are generally made from materials such as expanded shale, clay, slate, or perlite. The use of lightweight aggregates in LWSCC reduces the density of the concrete, which in turn results in a reduction in the weight of the structure.
The purpose of LWSCC is to produce a lightweight and durable concrete that is easy to work with and requires minimal compaction. The self-consolidating property of LWSCC ensures that the concrete can flow easily into the formwork and around reinforcement without the need for vibration or compaction. This results in a concrete with a smooth surface finish and improved strength and durability.
LWSCC is commonly used in a variety of construction applications such as precast concrete products, bridges, high-rise buildings, and other structures where weight reduction is important. The use of LWSCC in precast concrete products can result in a reduction in the weight of the product, making it easier to transport and handle. In bridges and high-rise buildings, LWSCC can reduce the dead load of the structure, which can result in a reduction in the overall cost of the project.
