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首页> 外文会议>第一届现代铁路创新与可持续发展国际会议（The First International Symposium on Innovation amp; Sustainability of Modern Railway） >LONG-TERM BEHAVIORS AND DURABILITY OF SLEEPER HIGH-STRENGTH CONCRETE WITH S-P HYBRID FIBERS BY LOWER VOLUME
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LONG-TERM BEHAVIORS AND DURABILITY OF SLEEPER HIGH-STRENGTH CONCRETE WITH S-P HYBRID FIBERS BY LOWER VOLUME

机译：较小体积S-P混杂纤维滑质高强混凝土的长期性能和耐久性

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摘要

The effect of steel fiber (SF), polyacrylonitrile fiber (PF) and steel-polyacrylonitrile hybrid fibers (S-P hybrid fibers) on the long-term behaviors and durability of sleeper high-strength concrete (SHSC) were investigated based on contrast experimental method. The experimental results have indicated that steel fiber and polyacrylonitrile fiber can improve the long-term behaviors and durability of the sleeper high-strength concrete. Especially when added the steel-polyacrylonitrile hybrid fibers, those can be improved markedly. And the shrinkage of 90d, the creep gradient of 200d, the relative coefficient of permeability and the coefficient of chloride penetration of the specimens with 0.6% of the hybrid fibers by volume can be decreased by 36.6%, 45.4%, 79.03% and 30.5% respectively, compared to the control concrete without fiber.
机译：基于对比实验方法，研究了钢纤维（SF），聚丙烯腈纤维（PF）和钢-聚丙烯腈杂化纤维（S-P杂化纤维）对轨枕高强度混凝土（SHSC）长期性能和耐久性的影响。实验结果表明，钢纤维和聚丙烯腈纤维可以改善轨枕高强度混凝土的长期性能和耐久性。特别是当添加钢-聚丙烯腈杂化纤维时，可以显着改善它们。混合纤维体积分数为0.6％时，试样的收缩率90d，蠕变梯度为200d，相对渗透率系数和氯离子渗透系数分别降低了36.6％，45.4％，79.03％和30.5％。与没有纤维的对照混凝土相比。

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