摘要
依托海文高速预防性养护工程,为了得到适用于海南地区超薄磨耗层的粘结层材料。选取了四种乳化沥青和一种热熔复合改性沥青,在25℃和50℃下,分别对不同洒布量的粘结层材料进行拉拔试验,在最佳洒布量下对各种粘结层材料进行斜剪试验。试验结果表明随着温度的升高,各种粘结层材料的拉拔强度和抗剪强度降低,最佳洒布量也随之降低。掺加Honeywell改性乳液显著提高了NovaBond乳化沥青的拉拔强度和抗剪强度,但并未改变其最佳洒布量。建议海南地区超薄磨耗层的粘结层材料采用掺加Honeywell改性乳液的NovaB ond,并建议NovaBond乳化沥青的洒布量为0.8 L/m^2,Honeywell改性乳液洒布量为0.08 L/m^2。
Relies on preventive maintenance project of freeway from Haikou to Wenchang,in order to obtain the adhesive layer material suitable for ultra-thin wear layer in Hainan region,four kinds of emulsified asphalt and one kind of hot-melt composite modified asphalt are selected to carry out pull-out tests on different spraying content at 25 ℃ and 50 ℃.Oblique shear tests are carried out on various kinds of adhesive layer materials at optimum spraying content.The test results showed that with temperature increasing,pull-out strength and shear strength of all kinds of adhesive layer materials decreasing,and the optimum spraying amount also decreasing.The addition of Honeywell modified emulsion significantly improve the tensile strength and shear strength of NovaBond emulsified asphalt,but do not change the optimum spraying content.NovaBond mixed with Honeywell modified emulsion is recommended as adhesive layer material between ultra-thin wear layer in Hainan region,and it’s recommended that the spraying contents of NovaBond emulsified asphalt and Honeywell modified emulsion are 0.8 L/m^2 and 0.08 L/m^2.
作者
胡诗园
叶奋
许牧
林承章
林健
Hu Shiyuan;Ye Fen;Xu Mu;Lin Chengzhang;Lin Jian(l.Key Laboratory of Road and Traffic Engineering,Ministry of Education,Tongji University,Shanghai 201804;Hainan Transportation Engineering Machinery Maintenance Center,Haikou 570206;Highway Maintenance and Management Center,Hainan Highway Administration,Haikou 570125)
出处
《石油沥青》
2019年第5期45-49,66,共6页
Petroleum Asphalt
基金
海南省交通运输厅科技项目(JT20170898001)
关键词
超薄磨耗层
粘结层
拉拔试验
斜剪试验
洒布量
ultra-thin wear layer
adhesive layer
pull-out test
oblique shear test
spraying content
