董玉文1,陈 聪2,郑 磊1,谢 辉1
董玉文,陈聪,郑磊,等.引气剂对冻融作用后混凝土力学性能的影响[J].混凝土与水泥制品,2019(6):14-16.
DONG Y W,CHEN C,ZHENG L,et al.The Effects of Air Entraining Agent on Mechanical Properties of Concrete after Freeze-thaw Action[J].China Concrete and Cement Products,2019(6):14-16.
引气剂对冻融作用后混凝土力学性能的影响
董玉文1,陈 聪2,郑 磊1,谢 辉1
董玉文,陈聪,郑磊,等.引气剂对冻融作用后混凝土力学性能的影响[J].混凝土与水泥制品,2019(6):14-16.
DONG Y W,CHEN C,ZHENG L,et al.The Effects of Air Entraining Agent on Mechanical Properties of Concrete after Freeze-thaw Action[J].China Concrete and Cement Products,2019(6):14-16.
摘 要:通过室内实验,研究了引气剂对混凝土的质量损失、动弹性模量、相对动弹模、极限抗压强度及应力-应变曲线规律的影响。结果表明,混凝土的质量、动弹性模量、极限抗压强度均随着冻融次数的增加而减小,引气剂可以减缓混凝土的质量、动弹模、相对动弹模、极限抗压强度及承载能力的下降幅度,适当添加引气剂有助于增强混凝土的抗冻性能及耐久性。
Abstract: By laboratory experiment, the influence of air entraining agent content on mass lass, dynamic elastic modulus, relative dynamic elastic modulus, ultimate compressive strength and strain-stress curve of concrete were researched. Results show that mass, dynamic elastic modulus and ultimate compressive strength of concrete decrease with increasing times of freezing-thawing cycle. The reduction extent of mass, dynamic elastic modulus, relative dynamic elastic modulus, ultimate compressive strength and bearing capacity of the concrete can be slowed down by adding air entraining agent. So frost resistance and durability of concrete can be improved by adding appropriate amount air entraining agent.
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