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机构地区:[1]东北电力大学建筑工程学院,吉林吉林132012
出 处:《应用基础与工程科学学报》2013年第2期299-306,共8页Journal of Basic Science and Engineering
基 金:国家自然科学基金(50878040)
摘 要:通过单轴受压、劈裂抗拉和抗折试验,研究了活性粉末混凝土的基本力学性能(抗压强度、劈拉强度和抗折强度).研究结果表明:钢纤维体积含量1.0%—2.0%之间变化时,活性粉末混凝土的抗压强度、劈拉强度和抗折强度变化不明显,当钢纤维体积含量超过2.0%后,其抗压强度、劈拉强度和抗折强度均有明显提高.当钢纤维体积含量超过3.5%后,钢纤维掺量对活性粉末混凝土轴心抗压强度和劈拉强度影响不明显,而对抗折强度的提高作用仍然比较明显.根据试验曲线,推导拟合出活性粉末混凝土单轴受压应力-应变曲线方程.Based on experiments of uniaxial compression, splitting tensile and flexural experiments, the basic mechanical properties (compressive strength, splitting tensile strength and flexural strength) of reactive powder concrete ( RPC ) were investigated in the study. The results indicated that the compressive strength, splitting tensile strength and flexural strength of RPC had no obvious changes when the steel fiber volume fraction varied from 1.0% to 2.0%, but they all increased obviously if the steel fiber volume fraction was higher than 2.0%. When the steel fiber volume fraction was exceeded 3.5 % , the compressive strength and splitting tensile strength of RPC had no obvious changes, however, the flexural strength of RPC still increased obviously. According to the experiment curves, an equation for the compressive stress-strain curve of reactive powder concrete was deduced.
关 键 词:活性粉末混凝土 钢纤维 力学性能 应力-应变全曲线 试验研究
分 类 号:TU528.31[建筑科学—建筑技术科学] TU528.572
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