摘要
为了改善公路养护用乳化沥青的综合性能,提高公路养护作业的施工效率,以水性环氧树脂乳液为改性剂,对乳化沥青进行了改性试验,制备出一种适合公路养护施工用的环氧树脂改性沥青材料。重点考察了环氧树脂掺量对乳化沥青老化性能、粘接性能、黏附性能以及低温劈裂强度的影响。结果表明:环氧树脂的掺入能够有效提高乳化沥青在高温条件下老化后的基础性能,有效减小乳化沥青的针入度和延度,增大乳化沥青的软化点;环氧树脂的掺入还能有效改善乳化沥青的粘接性能、黏附性能和低温劈裂性能,并且随着环氧树脂掺量的逐渐增大,乳化沥青的拉拔强度、黏附等级和低温劈裂强度均呈现出逐渐增大的趋势,推荐环氧树脂的最佳掺量为10%。研究结果可为公路养护用乳化沥青材料的高效改性提供一定的借鉴。
In order to improve the comprehensive performance of emulsified asphalt used for highway maintenance and improve the construction efficiency of highway maintenance,a modification test was carried out on emulsified asphalt with water-based epoxy resin emulsion as the modifier,and an epoxy resin modified asphalt material suitable for highway maintenance construction was prepared.The focus was on investigating the effects of epoxy resin content on the aging performance,bonding performance,adhesion performance,and low-temperature splitting strength of emulsified asphalt.The results show that the addition of epoxy resin can effectively improve the basic performance of emulsified asphalt after aging under high temperature conditions,effectively reduce the penetration and ductility of emulsified asphalt,and increase the softening point of emulsified asphalt.In addition,the addition of epoxy resin can effectively improve the adhesive performance,adhesion performance,and low-temperature splitting performance of emulsified asphalt.With the gradual increase of epoxy resin content,the tensile strength,adhesion grade,and low-temperature spltting strength of emulsified asphalt show a gradually increasing trend.It is recommended that the optimal dosage of epoxy resin is 10%.The research results can provide some reference for the efficient modification of emulsified asphalt materials used in highway maintenance.
作者
陈小江
CHEN Xiao-jiang(Xiamen Zhongping Highway Survey and Design Institute Co.,Ltd.,Xiamen 362000,Fujian,China)
出处
《合成材料老化与应用》
2024年第6期73-75,19,共4页
Synthetic Materials Aging and Application
关键词
公路养护
环氧树脂
改性沥青
老化性能
粘接性能
highway maintenance
epoxy resin
modified asphalt
aging performance
adhesive performance
