长龄期再生粗骨料对再生混凝土弹性模量影响的试验研究  

Experimental analysis the influence of elastic modulus based on different eras recycled coarse aggregates of recycled concrete

作　　者：王社良[1] 赵昆[1] 张博[1] 于洋[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《混凝土》2011年第10期43-45,共3页Concrete

基　　金：国家自然科学基金重大研究计划(90715003);国家自然科学基金资助项目(10972168);教育部高等学校博士学科点专项科研基金(200807030002;20096120120005);陕西省工业攻关项目(2008K07-31);陕西省重点实验室项目(08JZ35;09JS022);国家重点实验室开放项目(08KF02);陕西省教育厅重点实验室访问学者项目(09JS023;09JS024);中国煤炭地质总局航测遥感局科技创新基金;陕西省社发攻关项目(2010K01-127)

摘　　要：通过试验及查阅研究国内外相关的文献,对比分析了0、10、40年的再生粗骨料,在取代率为0、30%、50%、70%、100%时再生混凝土的弹性模量。通过对比试验,研究了再生粗骨料的年代对再生混凝土弹性模量的影响,探讨了其影响的一般规律。研究结果表明:再生粗骨料年代在10年以内时,其弹性模量随取代率增大而减小的速率较大,10年以后,其弹性模量随取代率增大而减小的速率较小。另外,在不同取代率下,再生粗骨料的年代对再生混凝土弹性模量的影响大小也是不同的。有利于日后对不同年代再生混凝土的分类利用,为进一步的研究和应用打下基础。According to experiment and relevant references at home and abroad, the elastic modulus of recycled concrete of 0 years, 10 years, 40 years of recycled coarse aggregate under the rate of 0 to replace, 30%, 50%, 70%, 100% were comparatively analyzed.By this experiment, the influence of the age of recycled coarse aggregate on recycled concrete elastic modulus and probed into the general regularity of its impact were studied.The results showed that the recycled coarse aggregate in 10 years, the rate of elastic modulus decrease with the higher replacement ratio rate is higher, 10 years later,the rate is lower.In addition,under different substitution rate,the influence on the elastic modulus of recycled concrete is also different,which depends on the age of recycled coarse aggregate.Helpful to classified use of different eras of recycled concrete in the future and it will lay the foundation for further study and application.

关 键 词：再生粗骨料 再生混凝土 弹性模量 

分 类 号：TU528.041[建筑科学—建筑技术科学]