ABSTRACT
Regulations of technology of lightweight aggregate concrete in China (2002) defines Lightweight Aggregate Concrete (LWAC) as a mixture of light aggregate, light sand or ordinary sand, cement, and water with dry apparent density not exceeding 1950 kg/m3. With the advantages of lightweight, the presence of environment protecting materials, and cost saving, LWAC has been widely applied in the field of modern civil engineering (Alduaij et al. 1999, Liu et al. 2010). High-Strength, Lightweight Aggregate Concrete (HSLWAC) refers to strength grade more than LC40 mixture with high-strength, lightweight aggregate (mainly ceramsite) (Ye et al. 2007). Lightweight aggregate is about 25-30% lighter than normal aggregate in the same concrete strength grade.
