| Popis: |
In order to investigate the impact resistant behavior of lightweight aggregate RC slab (LA RC slab) mixed with Poly-vinyl Alcohol (PVA) short-fibre, falling-weight impact tests were conducted taking fibre mixing volume ratio Vf as variable. In this paper, to evaluate the impact load carrying capacity of each LA RC slab, single impact loading tests were conducted, referring to the former experimental results of static and iterative impact loading test conducted by authors. The results obtained from this study are as follows; 1) static and impact resistant capacity of the LA RC slabs can be increased with an increment of fibre volume mixing ratio; 2) evaluating input impact energy in terms of impact resistant capacity, that of the LA RC slabs mixed with Vf = 0.5 and 1.0 % PVA short-fibre can be upgraded by 3 and 4 times than that of the RC slab without short-fibre, respectively; 3) maximum input impact energy of each RC slab increases linearly corresponding to the static load-carrying capacity, and the increment ratio of the RC slab mixed with PVA short-fibre is larger than that of the RC slab without PVA short-fibre. |
