Properties of self-compacting lightweight concrete

This paper compares the fresh and hardened properties of self-compacting lightweight concretes (SCLCs). The effects of different dosages of binder materials, sand ratios and types of fine aggregate (i.e.river sand and crushed stone fine) on the performance of fresh SCLC and the properties of hardened SCLC were examined. Results indicated that air dry bulk density of SCLC ranged from 1760 to 1800 kg m^-3, oven dry density ranged from 1630 to 1660 kg m^-3 and elastic moduli ranged from 22 to 28 GPa. For fresh SCLC, the T ₅₀ values decrease irrespective of the types of fine aggregate used and there is an optimal binder content >550 kg m^-3. The bulk density of the concretes decreases slightly with increasing binder content. © 2010 W. S. Maney & Son Ltd.