橡胶粉水泥混凝土弹性性质与试验研究

发布时间：2018-04-10 11:06

本文选题：橡胶粉水泥混凝土 + 微观力学　；参考：《新型建筑材料》2017年09期

【摘要】：以细观力学理论为基础,应用微分法求解橡胶粉混凝土的弹性常数,计算了掺不同粒径橡胶粉水泥混凝土在不同橡胶粉体积掺量条件下的等效弹性常数,通过计算结果与试验结果进行了比较和误差分析,及橡胶粉水泥混凝土的弥散增韧机理研究。从橡胶粉掺量、试件成型和橡胶粉水泥混凝土微观构造3个方面分析误差产生的原因,并分析橡胶粉水泥混凝土的压折比的变化规律。通过比较理论解和试验数据得知,二者吻合较好,证明利用细观力学理论的微分法求解橡胶粉混凝土弹性常数是一种可行并有效的方法,分析得知,橡胶粉体积掺量为2.4%是保持橡胶粉水泥混凝土各项优异力学性能的关键掺量。
[Abstract]:Based on the theory of meso-mechanics, the elastic constants of concrete with rubber powder were calculated by differential method, and the equivalent elastic constants of cement concrete with different particle sizes were calculated under the condition of different volume of rubber powder.Through the comparison and error analysis between the calculated results and the experimental results, the dispersion toughening mechanism of rubber powder cement concrete is studied.The causes of the errors are analyzed from three aspects: the amount of rubber powder, the forming of the specimen and the microstructure of the cement concrete with rubber powder, and the variation law of the compression / folding ratio of the cement concrete with rubber powder is analyzed.By comparing the theoretical solution with the experimental data, it is proved that the differential method of mesomechanical theory is a feasible and effective method to solve the elastic constant of rubber powder concrete.The volume content of rubber powder is 2.4%, which is the key to maintain the excellent mechanical properties of rubber powder cement concrete.
【作者单位】：广西交通职业技术学院路桥工程系轨道工程教研室;
【基金】：广西高校科研项目(2013YB309/2013YB306) 广西交通科技项目(桂教科教发[2012]26号-16)
【分类号】：TU528

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