广西天然碎石土路面低造价硬化技术研究  

Low-cost Harding Technology for Natural Macadam Pavement in Guangxi

作　　者：黄星海[1] 苏应全[1] 张洪举[2] 杨慧丽[2] 

机构地区：[1]广西壮族自治区公路管理局,广西南宁530021 [2]交通运输部公路科学研究院,北京100088

出　　处：《交通标准化》2010年第15期241-244,共4页Communications Standardization

基　　金：广西交通厅科技项目(广西区交通厅交综合发〔2007〕76号)

摘　　要：以广西农村公路砂石路面为依托进行低造价改造技术的试验研究,经现场取样和室内、外试验,结果表明:对于现有碎石土路面,添加占总量20%～30%的粘性土作为胶结材料时,能显著改变碎石土的颗粒级配,易于形成路面板块;再添加占胶结材料2%的石灰进行改善,能大幅提高路面结构的强度和水稳性能;若再添加水泥等胶结材料,虽可进一步提高强度,但不利于施工。故对于农村公路天然碎石土路面,建议采用路拌法泥灰固结。Based on the sand-gravel pavement of Guangxi rural highway, the test research on low-cost reconstruction is carried on. Though field sampling as well as indoor and outdoor test, the result shows that in allusion to the present sand-gravel pavement, adding clay soil as cementing mat- ter, the content of which is 20%-30% of total mixture, can obviously change the gradation of macadam, and the pavement slab is easy to form. Meanwhile adding lime, the content of which is 2% of cementing matter, can heighten the strength of pavement structure and waterstable property greatly. If cement or other cementing matter is added in addition, though the strength can be height- ened further, but it goes against construction. Therefore, in allusion to rural highway natural macadam pavement, it is suggested that using road-mixing marl for concretion.

关 键 词：路面 碎石土 硬化 级配 

分 类 号：U416.214[交通运输工程—道路与铁道工程]