高速公路改扩建工程新旧路面基层拼接界面处理方案研究

发布时间：2018-05-10 18:01

本文选题：高速公路改扩建 + 基层拼接　；参考：《公路》2017年11期

【摘要】：文中主要开展高速公路改扩建工程新旧路面基层拼接方案研究,通过设计室内拉拔强度、劈裂强度试验对拼接材料的类型、配方、用量进行比选,为高速公路改扩建工程路面拼接方案选择提供参考。研究得出以下结论:界面剂组分A∶B∶水泥的质量比=1∶3∶6的情况下拉拔强度较高,达到2.40 MPa;针对不同用量开展劈裂强度试验,其中方案D的劈裂强度最大为0.848 MPa,并且其冻融劈裂强度比最大,为88.07%,方案C次之;综合拉拔强度、劈裂强度、破坏形态及变异系数,推荐新旧基层拼接方案采用方案C,即界面剂组分A∶B∶水泥=1∶3∶6,涂刷量采用4~6kg/m~2,涂刷层厚约2.4mm。
[Abstract]:This paper mainly studies the splicing scheme of new and old pavement base course in expressway reconstruction and extension project, and compares the type, formula and dosage of splicing materials through drawing strength and splitting strength test in design room. It provides a reference for the selection of pavement splicing scheme in expressway reconstruction and extension project. The following conclusions are drawn: the mass ratio of the interfacial agent A: B: cement is 1: 3: 6, the tensile strength is higher, reaching 2.40 MPa, and the splitting strength test is carried out for different dosage. The maximum splitting strength of scheme D is 0.848 MPA, and the ratio of freezing and thawing splitting strength is 88.07, followed by scheme C, comprehensive drawing strength, splitting strength, failure form and coefficient of variation. It is recommended that the new and old base course splicing scheme C, I. E. the interfacial agent component A: B: cement 1: 3: 6, the amount of brush used is 4 ~ 6 kg / m ~ (-2), and the thickness of coating layer is about 2.4 m ~ (2).
【作者单位】：镇江市交通运输局;苏交科集团股份有限公司;
【基金】：江苏省基础研究计划(自然科学基金)面上研究项目,项目编号BK20151069 江苏省交通运输科技项目,项目编号2015T11 吉林省交通运输科技项目,项目编号2016-1-14
【分类号】：U418.8

【相似文献】