AAC-concrete light weight precast composite floor slab

In this study, the use of Autoclaved Aerated Concrete (AAC) as an in fill material for semi precast panel is investigated experimentally. The effectiveness of proposed light weight slab is reached by comparing the behavior of specimens with that of conventional solid precast slab. The comparisons were based on structural performance and total weight reduction. The composite AAC slabs section chosen are one way slabs with a size of 1m × 3m × 0.130 m (Width × Length × Depth). The specimens vary in the AAC blocks layouts and total weight reduction ratio. The test results showed that the AAC composite precast panel provides reasonable weight reduction without sacrificing the structural capacity.

► We test nine different full scale slabs to find optimum solution for AAC precast slabs. ► We examine changes in the layout of precast floor and amount of AAC. ► The dead load of the slab can be reduced by using proposed composite slab 32-23 % compeered to solid RC. ► Based on strain monitoring of the test specimens, structures perform in a fully composite manner until the ultimate load. ► Ductility and maximum deflection of the all tested slabs are well enough to give warning before failure.