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对经除冰盐侵蚀后的风积沙水泥砂浆进行单轴静态压缩试验,通过内掺风积沙代替同等质量普通砂后风积沙水泥砂浆在3种除冰盐溶液浓度下进行干湿循环侵蚀试验,达到干湿次数后进行抗压强度试验,研究分析风积沙水泥砂浆力学性能、应力应变曲线、损伤模型。研究结果表明:随着风积沙掺量的增加,水泥砂浆强度、峰值应力、峰值应变呈先增加后、下降的趋势;15%风积沙掺量的水泥砂浆强度最优,应力-应变曲线最缓和;根据试验数据建立的侵蚀损伤模型可较好的预测水泥砂浆受氯盐侵蚀后的损伤情况。
Uniaxial static compression tests were carried out on the aeolian sand-cement mortar after de-icing salt erosion. Aeolian sand was replaced by aerated sand instead of sand of the same quality. Aeolian sand and mortar was subjected to a wet-dry cycle at three deicing salt concentrations Erosion test, after reaching the number of wet and dry compressive strength test, research on the mechanical properties of wind and sand sand, the stress-strain curve, the damage model. The results show that the strength, peak stress and peak strain of cement mortar increase first and then decrease with the increase of aeolian sand content. The strength of cement mortar with 15% aeolian sand is the best, and the stress-strain curve The easiest; the erosion damage model established based on the experimental data can better predict the damage of the cement mortar after being attacked by chloride salt.