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为优化橡胶沥青胶浆组成,以流变性能为研究对象,通过动态剪切流变试验和低温弯曲梁流变试验,探讨了胶粉掺量、目数和粉胶比对橡胶沥青及胶浆的车辙因子、蠕变劲度和劲度变化率的作用。采用单因素方差和灰关联分析量化各因素对橡胶沥青胶浆的影响,推荐橡胶沥青胶浆材料参数。研究结果表明:各因素对胶浆流变特性影响具有显著效应;且粉胶比为胶浆性能最重要的影响因素;橡胶沥青胶浆的高温、低温性能均随着胶粉掺量的增加而改善;随着胶粉目数的减小,橡胶沥青胶浆低温性能提高;橡胶沥青胶浆高温性能存在最优胶粉目数,40目最优,60目次之,20目最差;当粉胶比为1.0~1.2时,橡胶沥青胶浆高低温性能综合最佳。
In order to optimize the composition of rubber asphalt mortar, the rheological properties were taken as the research object. Through the dynamic shear rheological test and the rheological test of the low temperature bending beam, the effects of mixing amount of cement powder, mesh number and powder / Rutting factor, creep stiffness and stiffness change rate role. The effects of various factors on rubber asphalt mortar were quantified by one-way ANOVA and gray correlation analysis, and the rubber asphalt mortar material parameters were recommended. The results show that: the various factors have a significant effect on the rheological properties of the mortar; and the mortar-rubber ratio is the most important influencing factor of the mortar performance. The high-temperature and low-temperature properties of the rubber asphalt mortar increase with the increase of the content of the rubber powder With the decrease of the number of rubber powder, rubber asphalt mortar low temperature performance increased; rubber asphalt mortar high temperature performance there are the best number of plastic powder, 40 mesh optimal, 60 mesh, 20 mesh worst; when the powder Rubber ratio of 1.0 to 1.2, the best combination of high and low temperature rubber asphalt mortar performance.