旧水泥混凝土路面再生利用的试验研究  

Experimental Study on Recycled Concrete of Old Cement Pavement

作　　者：金志强[1] 秦鸿根[2] 耿飞[3] 慕儒[4] 

机构地区：[1]江苏省交通厅工程质量监督站,江苏南京210001 [2]东南大学材料科学与工程系,江苏南京210096 [3]南京航空航天大学土木工程系,江苏南京210016 [4]江苏省建筑科学研究院,江苏南京210008

出　　处：《现代交通技术》2008年第2期1-4,共4页Modern Transportation Technology

摘　　要：结合实际工程要求,将旧水泥混凝土路面破碎成5￣40 mm的再生集料,选用2种外加剂进行了C35再生混凝土的配制试验。研究结果表明,在所设计的配合比下,再生混凝土的流动性和体积密度相对较小,凝结时间和含气量均在可控范围之内。再生混凝土具有较好的力学性能和抗渗性能,但抗冻性能尚需进一步研究和提高。Combined with the actual project requirements, performance tests are carried out for fresh and hardened properties of C35 recycled concrete made with two kinds of admixtures and the laboratory-crushed recycled concrete aggregate from the old cement pavement. Test results indicate that the workability and volume density of designed recycled concrete mixtures are relatively lower, and that the setting time and air content are within the controllable range. Besides, the recycled concrete has good performance of mechanics and impermeability, but its freeze-thaw resistance should be studied and improved further.

关 键 词：再生集料 再生混凝土 水泥路面 试验研究 

分 类 号：U416.216[交通运输工程—道路与铁道工程]