聚合物水泥路面填缝材料变形性能研究

发布时间：2018-05-19 23:34

本文选题：填缝材料 + 苯丙乳液　；参考：《硅酸盐通报》2017年09期

【摘要】：利用苯丙乳液、水泥、填料和助剂制备了聚合物水泥路面填缝材料(PCJS),并通过正交试验的方法得出了液粉比、水泥比例以及填料种类三种因素对材料定伸粘结性、峰值应变、断裂伸长率三个变形指标的影响规律。结果表明:PCJS的定伸粘结性随着液粉比和水泥比例的增大而逐渐提高;滑石粉和重质碳酸钙均能改善PCJS的定伸粘结性;液粉比是影响PCJS峰值应变指标和断裂伸长率指标的主要因素,并且随着液粉比的增大,峰值应变和断裂伸长率均增大;随着水泥比例的增大,PCJS的峰值应变先减小后增大,断裂伸长率呈现增大的趋势;PCJS在加入重质碳酸钙这种填料后的峰值应变和断裂伸长率相对较大;三种因素对PCJS的峰值应变指标的影响次序为:液粉比水泥比例填料种类,对断裂伸长率指标的影响次序为:液粉比填料种类水泥比例;液粉比取1∶0.45、水泥比例取60%、填料种类选用重质碳酸钙时,PCJS的变形性能最佳。
[Abstract]:Polymer cement pavement joint filling material (PCJS) was prepared by using styrene-acrylic emulsion, cement, fillers and auxiliaries. By orthogonal test, three factors, such as the ratio of liquid to powder, the ratio of cement and the type of filler, were obtained for the bindability and peak strain of polymer cement pavement. The effect of three deformation indexes on elongation at break. The results showed that the elongation and adhesion of PCJS increased with the increase of the ratio of liquid to powder and cement ratio, and both talc and calcium carbonate could improve the stability of PCJS. The ratio of liquid to powder is the main factor affecting the peak strain index and elongation at break index of PCJS, and the peak strain and elongation at break increase with the increase of liquid-powder ratio, and the peak strain decreases first and then increases with the increase of cement ratio. The peak strain and elongation at break of PCJS increased after adding heavy calcium carbonate, and the order of influence of three factors on the peak strain index of PCJS was as follows: the ratio of liquid to powder was different from that of cement, and the maximum strain and elongation at break of PCJS were higher than that of cement filler, and the order of influence of three factors on the peak strain index of PCJS was as follows. The order of influence on elongation at break is as follows: ratio of liquid to powder to filler type cement, liquid to powder ratio to 1: 0.45, cement to cement ratio to 60. When filler type is heavy calcium carbonate, the deformation performance of PCJS is the best.
【作者单位】：空军工程大学机场建筑工程系;西北工业大学力学与土木建筑学院;
【基金】：国家自然科学基金(51378497) 陕西省青年科技新星项目(KJXX-81)
【分类号】：U414

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