Effects of mixing ratio of short fibers in PVA fiber reinforced cementitious composite plates on their impact resistant performance subjected to high velocity impact

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  • 高速衝突を受けるPVA短繊維補強セメント複合材料板の局部破壊に短繊維混入量が及ぼす影響
  • コウソク ショウトツ オ ウケル PVA タンセンイ ホキョウ セメント フクゴウ ザイリョウバン ノ キョクブ ハカイ ニ タンセンイ コンニュウリョウ ガ オヨボス エイキョウ

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Abstract

This study presents local damage resistant performance of fiber reinforced cementitious composite plates including polyvinyl alcohol short fibers subjected to high velocity impact by a steel projectile. Effects of mixing ratio of the short fibers were examined by conducting high velocity impact tests. It was observed from the impact tests that the local damage was suppressed efficiently as the mixing ratio of the short fibers increased. The reinforcing effects were discussed based on the penetration depth and scabbing limit thickeness. An estimating method of the penetration and scabbing limit thicknesses was proposed with reduction factors multiplied by the modified NDRC formula.

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