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无机聚合物和橡胶粉作为新型节能环保材料,一直是工程应用研究的热点问题。本文利用2~4 mm的橡胶颗粒按等体积代替细骨料的方式掺入无机聚合物混凝土中,配制出不同橡胶掺量(0%、5%、10%、15%、20%)的无机聚合物橡胶混凝土。根据GB/T 50081-2002《普通混凝土力学性能试验方法标准》对无机聚合物橡胶混凝土的基本力学性能进行系统的试验。研究结果表明:相对于基准混凝土,橡胶掺量5%~20%的无机聚合物橡胶混凝土的立方体抗压强度下降了9.5%~35.7%;橡胶掺量10%~20%的无机聚合物橡胶混凝土的劈裂抗拉强度下降了9.9%~18.2%,轴心抗压强度下降了20.2%~35.4%,弹性模量下降了3.2%~7.8%;无机聚合物橡胶混凝土早期强度高于普通橡胶混凝土,其中,7 d相对强度高出11.5%;随着橡胶掺量的增加,无机聚合物橡胶混凝土的拉压比增加,强度比基本不变;无机聚合物橡胶混凝土的抗裂性能、变形能力随着橡胶掺量的增加而增强。
Inorganic polymer and rubber powder, as a new type of energy-saving and environmental protection material, have always been the hot issues in engineering application. In this paper, 2 ~ 4 mm rubber particles were mixed into inorganic polymer concrete by equal volume instead of fine aggregate to prepare inorganic rubber with different contents of rubber (0%, 5%, 10%, 15% and 20%) Polymer rubber concrete. According to GB / T 50081-2002 “Standard Test Method for Mechanical Properties of Common Concrete”, the basic mechanical properties of inorganic polymer rubber concrete were systematically tested. The results show that the cubic compressive strength of inorganic polymer rubber concrete with 5% ~ 20% rubber content decreases by 9.5% ~ 35.7% compared with that of benchmark concrete, and that of inorganic polymer rubber concrete with 10% ~ 20% rubber content The splitting tensile strength decreased by 9.9% -18.2%, the axial compressive strength decreased by 20.2% -35.4% and the elastic modulus decreased by 3.2% -7.8%. The early strength of inorganic polymer concrete was higher than that of common rubber concrete , Of which, the relative strength at 7 d was 11.5%. With the increase of rubber content, the ratio of tensile and compressive strength of inorganic polymer rubber concrete increased and the strength ratio basically remained unchanged. The cracking resistance and deformation capacity of inorganic polymer rubber concrete With the increase of rubber content increased.