Abstract
In this study, the contact detonation tests were conducted on six kinds of fiber-reinforced concrete slabs, and then spall damages created in them were compared with those in S-PEFRC (fiber-reinforced concrete with polyethylene fiber of strand type) slabs. The main results obtained are as follows: 1) all of fiber-reinforced concretes investigated in this study were effective in reducing spall damage as compared with normal concrete; 2) total damage depths in various fiber-reinforced concrete slabs could be generally estimated by formula for estimating that in the S-PEFRC slab; and 3) in case the modified-scaled concrete thickness was small, the S-PEFRC had somewhat better blast resistance than other fiber-reinforced concretes of which flexural toughness was equal to that of the S-PEFRC.
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