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混合骨料混凝土抗冻性能试验研究 被引量:3

Experimental Study on Frost Resistance Properties of Mixed Aggregate Concrete
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摘要 通过混合骨料混凝土的快速冻融循环试验,研究了浮石替代率、聚丙烯纤维、冻融循环次数对混合骨料混凝土抗冻性能的影响。结果表明:相对动弹性模量随着浮石替代率增加而增加;对于一定范围浮石替代率的混凝土,聚丙烯纤维的掺入能够改善混凝土的抗冻性能,浮石替代率为30%,聚丙烯纤维掺量为0.9 kg/m3的混合骨料混凝土,质量损失最小;聚丙烯纤维的掺入能够抑制混合骨料混凝土的冻融损伤,提高混凝土的密实度,减小混合骨料混凝土相对动弹性模量的损失。 通过混合骨料混凝土的快速冻融循环试验,研究了浮石替代率、聚丙烯纤维、冻融循环次数对混合骨料混凝土抗冻性能的影响。结果表明:相对动弹性模量随着浮石替代率增加而增加;对于一定范围浮石替代率的混凝土,聚丙烯纤维的掺入能够改善混凝土的抗冻性能,浮石替代率为30%,聚丙烯纤维掺量为0.9 kg/m3的混合骨料混凝土,质量损失最小;聚丙烯纤维的掺入能够抑制混合骨料混凝土的冻融损伤,提高混凝土的密实度,减小混合骨料混凝土相对动弹性模量的损失。
出处 《建筑科学》 北大核心 2011年第S1期22-24,共3页 Building Science
关键词 混合骨料混凝土 浮石 聚丙烯纤维 抗冻性能 mixed aggregate concrete pumice polypropylene fiber frost resistance
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