水泥替代矿粉对花岗岩沥青混合料路用性能影响  

Effect of replacing mineral powder with cement on the road performance of granite asphalt mixture

作　　者：陈建东 CHEN Jiandong

机构地区：[1]福建省方正工程技术有限公司,福建泉州362000

出　　处：《福建建设科技》2023年第3期60-63,66,共5页Fujian Construction Science & Technology

摘　　要：本文研究水泥和矿粉在花岗岩沥青混合料中的作用机理。通过分析不同掺量水泥对花岗岩与沥青黏附性的影响,发现水泥和矿粉能够双重提高黏附性。此外,通过水稳性能试验和高低温性能试验,发现水泥掺量在3%~5%时,残留稳定度提高6.4%~10.9%,冻融劈裂强度比提高3.6%,最大弯拉应变呈递减趋势,尽管残留稳定度和冻融劈裂强度比评价水稳性存在一定差异,但综合考虑,3%~5%水泥替代矿粉可以显著改善沥青路面的路用性能。In this paper,the mechanism of action of cement and mineral powder in asphalt mixture is studied.By analyzing the effects of different cement content on the adhesion of granite and asphalt,it is found that cement and mineral powder can double improve the adhesion.In addition,although there are certain differences in residual stability and freeze-thaw splitting strength than in water stability evaluation test,comprehensive consideration shows that asphalt pavement performance has the best improvement effect when 3%~5%cement replaces mineral powder.

关 键 词：水泥替代矿粉 花岗岩沥青混合料 黏附性 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]