Effect of temperature on the mechanical properties of polymer mortars
Effect of temperature on the mechanical properties of polymer mortars
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DOI：
10.1590/s1516-14392012005000091
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发表时间：
2012-08
影响因子：
1.7
通讯作者：
J. Reis
中科院分区：
文献类型：
--
作者：
J. Reis
本文介绍了一个实验程序的结果，以探讨温度对环氧树脂和不饱和聚酯聚合物砂浆（PM）的性能的影响。PM是一种复合材料，其中聚合物材料用于以类似于制备波特兰水泥混凝土中所用的方式粘结骨料。为此，棱柱形和圆柱形试样分别在不同温度下进行弯曲和压缩试验。温度依赖性的弹性模量和压缩和弯曲强度的测量是使用连接到通用试验机的恒温箱进行的，温度范围从室温到90 ℃。随着温度的升高，复合材料的抗折强度和抗压强度下降，基体热处理后下降尤为明显。环氧聚合物砂浆比不饱和聚酯砂浆对温度变化更敏感。
This paper presents the results of an experimental program to investigate the effect of temperature on the performance of epoxy and unsaturated polyester polymer mortars (PM). PM is a composite material in which polymeric materials are used to bond the aggregates in a fashion similar to that used in the preparation of Portland cement concrete. For this purpose, prismatic and cylindrical specimens were prepared for flexural and compressive tests, respectively, at different temperatures. Measurements of the temperature-dependent elastic modulus and the compressive and flexural strength were conducted using a thermostatic chamber attached to a universal test machine for a range of temperatures varying from room temperature to 90 oC. The flexural and compressive strength decreases as temperature increases, especially after matrix HDT. Epoxy polymer mortars are more sensitive to temperature variation than unsaturated polyester ones.