INFLUENCES OF SLAB COMPOSITION USING PRECAST SMALL ELEMENTS ON BLAST RESISTANCE

Blast resistance of polyethylene fiber-reinforced concrete against contact detonation

Abstract

For rapid construction of concrete barriers against sudden terrorist bomb attacks, blast-resistant slabs composed of precast small elements such as thin plates and blocks, which were made of polyethylene fiber-reinforced concrete (PEFRC), were manufactured and used for contact detonation tests. The main results obtained are as follows: 1) the blast resistance of the 100-mm-thick solid-type slabs, which are constructed with thin plates or solid blocks, is almost equal to that of the 100-mm-thick PEFRC single slab; and 2) the hollow-type slabs composed of thin plates or hollow blocks possess better blast resistance than the single slab, because an element on the detonation side behaves as a sacrificial element in these slabs.