再生粗骨料颗粒整形的必要性  

The Necessity for Shaping Recycled Coarse Aggregate Particles

作　　者：秦原[1] 李秋义[1] 孟文燕[2] 朱亚光[1] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]山东水利职业技术学院,日照276826

出　　处：《青岛理工大学学报》2009年第6期25-29,共5页Journal of Qingdao University of Technology

基　　金：国家"十一五"科技支撑计划重点课题资助项目(2006BAJ02B0504)

摘　　要：传统观点认为碎石比卵石好,并认为混凝土再生粗骨料经过整形处理后,去掉了棱角使粒形趋于圆形是不利的.笔者通过分别配制卵石混凝土和碎石混凝土进行对比,指出卵石因粒形比碎石好,卵石混凝土的性能优于碎石混凝土;通过分别配制颗粒整形再生粗骨料混凝土和简单破碎再生粗骨料混凝土进行对比,指出经过整形处理后的再生粗骨料,粒形和界面都得到了改善,所配制的混凝土性能得到显著提高.碎石混凝土强度高于卵石混凝土强度的观点是不全面的,有必要对再生粗骨料进行整形处理.The traditional view is that gravel is better than pebble stone and the recycled concrete coarse aggregate, after orthopedic treatment and tending to become round, has some disadvantages. Comparing the prepared pebble concrete and the gravel concrete, the paper points out that the performance of the pebble grain shape is better than that of the gravel. Through comparing the prepared particles of recycled coarse aggregate concrete with the plastic simple crushing recycled coarse aggregate concrete, we can see that after shaping the treated recycled coarse aggregate, grain shape and interface have been improved, the performance of the prepared concrete has been improved significantly, so it＇s not correct to say that the strength of the crushed stone gravel concrete is bigger than that of the pebble concrete. Therefore, it is necessary to shape the recycled coarse aggregate.

关 键 词：卵石混凝土 碎石混凝土 再生粗骨料 颗粒整形 

分 类 号：TU522.09[建筑科学—建筑技术科学]