烧结脱硫灰在道路基层中的应用研究  

Application of Sintering Desulfurization Ash in Road Base Course

作　　者：杨利香 

机构地区：[1]上海市建筑科学研究院建筑材料技术研究所,上海200032

出　　处：《上海公路》2014年第1期52-55,共4页Shanghai Highways

基　　金：上海市科委项目(12DZ2280600;10DZ0510200)

摘　　要：以烧结脱硫灰安全处置与资源化利用为宗旨,开展烧结脱硫灰用于石灰粉煤灰稳定碎石的无侧限抗压强度、抗冻性能、干湿循环等性能研究。结果表明,烧结脱硫灰同时替代15%的石灰和粉煤灰配制石灰一粉煤灰一烧结脱硫灰稳定碎石性价比高,其最佳含水量为8.0%,对应的最大干密度为2.30 g/cm^2;7 d、28 d强度分别达到2.1 MPa、7.1 MPa,高出基准二灰碎石23.5%、82.1%,满足高速公路、一级公路石灰粉煤灰稳定碎石基层标准要求,且其施工性能和耐久性能良好。目前,该石灰一粉煤灰一烧结脱硫灰碎石已实现产业化生产,广泛应用于宝山区锦南路改造、宝山区罗新路建设等工程项目。For the aim of resource utilization of sintering desulfurization ash(SDA),this paper studied lime-fly ash stabilized macadam(LASM) mixed with SDA properties such as unconfined compressive strength, frost resistance, dry-wet cycling resistance. The results show that 15% substitution of lime and fly ash by SDA contribute to better comprehensive performance of LASM. For example,optimum water content of the modified LASM is 8. 0% and its corresponding maximum dry density is 2. 30g/cm3. 7d and 28d compressive strength can reach 2. 1 MPa and 7. 1 MP respectively, which is 23. 5% and 82. 1 % higher than that of reference LSAM. All these properties meet the requirement ofLSAM standard for highway. Besides, workability and durability of the prepared material is quite good as well which is demonstrated in Baoshan road engineering.

关 键 词：石灰粉煤灰稳定碎石 烧结脱硫灰 道路基层 

分 类 号：U416.2[交通运输工程—道路与铁道工程]