硅改沥青及沥青混合料  

Silicon Modified Asphalt and Asphalt Mixture

作　　者：陈其龙[1] 吴聪[1] 黄世源 覃峰[1] 谭波[2] 

机构地区：[1]广西交通职业技术学院,南宁市530023 [2]桂林理工大学,桂林市541004

出　　处：《公路》2017年第3期50-56,共7页Highway

基　　金：2014广西科学研究与技术开发计划课题;项目代码BA2001

摘　　要：通过扫描电镜、红外光谱、差示扫描量热分析,探寻硅藻精土与沥青的微观结合机制。以0、9%、11%、13%、15%掺配量的硅藻精土改性沥青进行马歇尔试验,分析得出13%掺量的硅藻精土改性沥青效果最佳。以13%掺量的硅藻精土改性沥青进行相关路用性能的室内试验,试验结果表明:硅藻精土改性沥青混合料的劈裂强度较70号沥青混合料的劈裂强度提高了近16.8%;硅藻精土改性沥青混合料的动稳定度是70号沥青混合料的动稳定度的2.07倍。综合得出,13%掺量的硅藻精土改性沥青混合料的路面性能可得到显著的提高。Through scanning electron microscopy,infrared spectroscopy and differential scanning calorimetry,the micro bonding mechanism of diatomite and asphalt is explored.Diatomite modified asphalt with different blending volume of 0,9%,11%,13%and 15%is conducted by Marshall test,and it is concluded that 13%of the dosage of the purified diatomite asphalt has the best effect.And 13%dosage of diatomite modified asphalt is used to carry out road performance indoor test,the test results show that：the freeze-thaw splitting test silicon algae essence land reform of asphalt mixture splitting strength is 70#asphalt mixture splitting strength can be improved by about 16.8%;rutting test by diatomite asphalt mixture dynamic stability is 70#asphalt mixture dynamic stability of 2.07 times.The pavement performance of diatomite modified asphalt mixture with 13%dosage has been significantly improved.

关 键 词：改性沥青 硅藻精土 混合料 路面性能 

分 类 号：TU535[建筑科学—建筑技术科学]