浮石混合骨料混凝土冻融损伤模型及剩余寿命预测

Study on Freeze-thaw Damage Model and Residual Life Prediction of Pumice Lightweight Aggregate Concrete

本文在对浮石轻骨料混凝土实验研究得到实验数据的基础上,对浮石轻骨料混凝土的抗冻性能做更深层次的研究,基于浮石轻骨料混凝土的质量和相对动弹性模量的变化规律,建立了浮石轻骨料混凝土的冻融损伤模型,并对浮石轻骨料混凝土的剩余寿命进行预测,通过试验研究表明浮石轻骨料混凝土的抗冻性能较好,随着浮石替代量的增加,混凝土的剩余寿命增加但抗压强度降低。

Based on the data from the experimental study about pumice lightweight aggregate concrete, the paper makes a deeper study about its frost-resistance. Based on the variation rule of quality and relative dynamic elastic modulus about pumice lightweight aggregate concrete, the paper builds freeze-thaw damage model and predicts the remaining life for pumice lightweight aggregate concrete. The experimental research results show that the frost-resistance of pumice lightweight aggregate concrete performs better, and with the replacement rate of pumice increases, the remaining life of concrete is prolonged but the compressive strength is decreased.