材料期刊网

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。

As the energy-efficient and environment friendly materials , inorganic polymer and rubber powder have always been the hot issues in engineering application study .In this paper , we use 2-4 mm rubber particles instead of the fine aggregates in the same volume , making upinorganic polymer rubber concrete with different rubber contents ( 0%,5%,10%,15%,20%) .According to GB/T 50081-2002 standard of test method about the ordinary concrete ’ s basic mechanics performance , we make experiments to study the basic mechanics performance of the inorganic polymer rubber concrete .The results show that , relative to reference concrete , the cube compressive strength of inorganic polymer rubber concrete with 5% to 20% rubber contents decreased by 9 .5% to 35 .7%;the tensile splitting strength of inorganic polymer rubber concrete with 10% to 20% rubber contents decreased by 9.9% to 18.2%, the axial compressive strength decreased by 20.2%to 35.4%, the static modulus decreased by 3.2%to 7.8%.The early age strength of inorganic polymer rubber concrete is higher than ordinary rubber concrete, among them, the seven days relative intensity is 11.5% higher.With the increase of rubber content , the ratio of tension and compression of inorganic polymer rubber concrete increases , the strength ratio remain unchanged .The anti-cracking ability and deformability of inorganic polymer rubber concrete enhances with the increase of rubber concrete .