摘要
城市生活垃圾焚烧后残留了大量的灰渣，用灰渣替代部分集料制备水泥稳定灰渣碎石半刚性基层材料，进行了路用性能研究。结果表明：灰渣掺量为31．6％的情况下，与传统水泥稳定碎石相比，最大干密度降低3．9％，而最佳含水率增大62％；水泥含量增加0．5％，则材料的无侧限抗压强度提高0．52～0．63MPa，但与相同水泥含量的传统材料相比，强度降低4．4％；水泥的含量对材料的最大干缩应变和干缩系数影响较大，当水泥含量为4．0％和4．5％时，水泥稳定灰渣碎石的最大干缩应变分别为151．8μ和185．8μ，平均千缩系数分别为40．5μ·％^-1和44．0μ·％^-1；与传统材料相比，平均干缩系数降低了9．2％～11．5％。
There are a mass of combustion residues when municipal solid waste are combusted. By replacing a part of macadam, residues used as aggregates to make cement stabilized residues-macadam materials are conducted at 31.6% content of residues. And the pavement performances of this material are also conducted. The results show that, compared to the traditional cement stabihzed macadam,the maximum dry density of this material decreases by 3.9% ,and the optimum water content increases by 62% at the same content of cement; Besides, the unconfined compressive strength will increase by 0.52 - 0.63 MPa, if the content of cement increases by 0.5 % ; But the strength is lower by 4.4%, compared to the strength of traditional material with the same content of cement;The maximum shrinkage strain and the shrinkage coefficient of the-new material are influenced significantly by the content of cement. With 4.0% and 4.5 % cement content,the maximum shrinkage strains of this material can reach to 151.8 μ and 185.8μ respectively,and the shrinkage coefficients are 40.5 μ·%^-1 and 44.0 μ·%^-1 respectively; Compared to traditional material, the shrinkage coefficient is lower by 9.2% - 11.5 %.
出处
《华东交通大学学报》
2010年第2期13-17,共5页
Journal of East China Jiaotong University
基金
江苏省交通科技计划发展项目(07Y07)
关键词
道路工程
城市生活垃圾
焚烧
水稳碎石
路面基层
road engineering
municipal solid waste
incineration
cement stabilized macadam
pavement base
