Development of Structural-graded Self-compacting Lightweight Concrete for Maintenance of Old Buildings

Description

The execution of building maintenance works is complicated in that most of the compromised structures are occupied and congested working environments. The objective of this research is to develop and evaluate the applicability of structural-grade self-compacting lightweight concrete for the maintenance of old buildings. Self-compacting lightweight concrete mixes with densities of around 1500 kg/m3 of comparable strength with normal concrete will be formulated, and the properties of fresh and hardened self-compacting lightweight concrete will be assessed. The effect of the type of fine aggregate such as river sand, crushed stone fine and crushed lightweight fine on the performance of concrete will also be evaluated. It is anticipated that this study will provide evidence to allow repair engineers to implement the use of self-compacting lightweight concrete in maintenance works and improve the quality of the living environment of residences during the construction period.