东南大学学报（自然科学版）Issue(2)：375-380,6.DOI:10.3969/j.issn.1001-0505.2014.02.026
电石渣稳定过湿黏土路基填料路用性能现场试验研究
Field investigations on performance of calcium carbide residues stabilized over-wet clayey soils used as highway subgrade materials
摘要
Abstract
A comparison of the physico-chemical properties of calcium carbide residues (CCR)and quicklime suggests that over-wet clayey soils stabilized by CCR is potentially used as highway sub-grade materials.A field investigation on the mechanical performance of the CCR stabilized over-wet clayey soils is conducted.The effects of the curing time on the California bearing ratio (CBR),the resilient modulus (Mr ),the penetration resistance (Rs ),and the dynamic cone penetration index (DCPI)of the CCR and quicklime stabilized soils are discussed.The results show that the CCR ex-hibit larger specific surface area and higher fine-particle content than the quicklime,which is more in favor of the evolution of pozzolanic reactions between the binder (i.e.,CCR or quicklime)and soils.Compared with the quicklime stabilized soils,the CCR stabilized soils have greater perform-ance in terms of higher CBR,greater resilient modulus and penetration resistance,and higher degree of correlation between DCPI and CBR and that between DCPI and Mr.In addition,CCR has evident benefits in terms of its cost-effectiveness,no dust pollution and little CO2 emission during the con-struction.It is concluded that CCR is a viable,economical,and environmental-friendly binder in stabilizing over-wet clayey soils,which are used as subgrade materials.关键词
电石渣/过湿黏土/现场试验/强度/模量Key words
calcium carbide residue/over-wet clayey soil/field investigation/strength/modulus分类
交通工程引用本文复制引用
杜延军,刘松玉,覃小纲,魏明俐,吴继峰..电石渣稳定过湿黏土路基填料路用性能现场试验研究[J].东南大学学报（自然科学版）,2014,(2):375-380,6.基金项目
国家自然科学基金资助项目（51278100）、江苏省自然科学基金资助项目（BK2012022）、江苏省交通科技资助项目（08Y30）． （）
