摘要
硫酸钙晶须由于具有良好的力学性能和纤维结构特性而被广泛应用。利用2%的无水乙醇硅烷偶联剂对硫酸钙晶须进行表面改性,经过恒温振荡、真空抽滤、洗涤、蒸发和干燥等过程制备改性硫酸钙晶须。利用高速剪切乳化机将硫酸钙晶须均匀分散于沥青中,分别制备出2%、4%、6%、8%和10%的硫酸钙晶须改性沥青。对硫酸钙晶须改性沥青进行三大指标试验和动态频率扫描试验,结果表明:随着硫酸钙晶须掺量的增加,改性沥青的高温稳定性能得到逐步提高。
Calcium sulphate whisker has extensive application value because of its good mechanical properties and structural characteristics. Calcium sulphate whisker was modified after constant temperature oscillation,vacuum suction filter,washing,evaporation and drying process using 2% ethanol silane coupling agent. Calcium sulphate whisker was evenly dispersed in the asphalt using high-speed shear emulsifying machine. Modified asphalt was prepared at 2%,4%,6%,8% and 10% percent by adding calcium sulfate whisker. Three indicators tests and dynamic frequency sweep tests were carried out. The results show that high temperature stability of the modified asphalt performance is obviously improved with the increase of calcium sulphate whisker content.
出处
《河南城建学院学报》
CAS
2017年第1期16-20,共5页
Journal of Henan University of Urban Construction
基金
河南省重点科技攻关计划项目(112102310602)
关键词
沥青
硫酸钙晶须
动态频率扫描试验
高温性能
asphalt
calcium sulfate whisker
dynamic frequency sweep tests
high temperature performance
作者简介
李利勤（1979-），女，河南偃师人，硕士，工程师。
