孔隙水饱和度对再生混凝土透气性能的影响研究  

The Influence of Pore Water Saturation on Recycled Concrete Permeability

作　　者：崔正龙[1] 路沙沙[1] 童华彬[1] 汪振双[2] 

机构地区：[1]辽宁工程技术大学建筑工程学院,阜新123000 [2]东北财经大学投资工程管理学院,大连116025

出　　处：《硅酸盐通报》2013年第3期490-494,共5页Bulletin of the Chinese Ceramic Society

基　　金：辽宁省"十百千高端人才引进工程"资助项目(50GD02)

摘　　要：因再生骨料本身特性等直接导致再生骨料混凝土在耐久性能方面与普通混凝土相比存在诸多性能不稳定因素。试验着眼于再生骨料混凝土渗透性中的透气性能,以不同强度等级、不同再生骨料置换率、不同混凝土的孔隙水饱和度为变量,对再生骨料混凝土抵抗透气性能方面与普通混凝土进行了对比性试验研究。试验结果表明,随着环境相对湿度的增加,不同强度等级、不同掺量再生骨料混凝土及对比用普通混凝土的孔隙水饱和度有所增加,且混凝土强度等级越高,孔隙水饱和度越高,在同一种强度等级内再生骨料混凝土的孔隙水饱和度比对比用普通混凝土略高;随着混凝土孔隙水饱和度的提高,再生骨料混凝土及对比用普通混凝土的透气性速度有所降低,当孔隙水饱和度超过80%时其透气速度小于0.2 mmHg/s。As the result of recycled aggregate properties, there are many unstable performance factors between recycled aggregate concrete durability and ordinary concrete durability. The test focuses on the air permeability of the renewable concrete permeability. We use different intensity levels, different recycled aggregate replacement ratios and different concrete pore water saturations as variable. Then we do the compared experimental researches on the recycled aggregate concrete air permeability and carbonation performance with ordinary concrete. The test results show that with the increase of the environment humidity, pore water saturation increased even they are with the different intensity levels, different contents of recycled aggregate concrete and also the contrary ordinary concrete, and the higher aggregate concrete and ordinary concrete concrete pore water saturation. When the less than 0.2 mmHg/s. permeability speed decreased with the improvement of the pore water saturation is more than 80%, the permeation rate is

关 键 词：再生骨料混凝土 孔隙水饱和度 透气性 

分 类 号：TU528[建筑科学—建筑技术科学]