再生骨料对GRC孔结构和吸水率的影响研究  

Effect of recycled aggregate on pore structure and water absorption of GRC

作　　者：项斌峰 

机构地区：[1]中国建材检验认证集团北京天誉有限公司,北京101113

出　　处：《中国建材科技》2020年第6期73-75,共3页China Building Materials Science & Technology

基　　金：北京市通州区科技计划(KJ2019CX056)。

摘　　要：通过分析再生骨料及其制备的再生GRC的吸水率和孔结构,研究不同再生骨料掺量对再生GRC吸水率、孔隙率和孔径分布的影响。结果表明,再生骨料含有较多的有害孔级和多害孔级的孔,孔隙率在8%以上,再生骨料取代掺量的增大会增多再生GRC中有害孔级和多害孔级的孔数量,减少无害孔级的孔数量,从而对材料力学性能和吸水率造成不利影响。By analyzing the water absorption and pore structure of recycled aggregate and regenerated GRC prepared by recycled aggregate,this paper studies the influence of different recycled aggregate content on the water absorption,porosity and pore size distribution of regenerated GRC.The results show that recycled aggregate contains more harmful pores,with porosity of more than 8%.The increase of recycled aggregate replacement content will increase the number of harmful holes and reduce the number of harmless holes,which had a negative impact on the mechanical properties and water absorption of regenerated GRC materials.

关 键 词：再生骨料 GRC 孔隙率 孔径分布 吸水率 

分 类 号：TU528.581[建筑科学—建筑技术科学]