再生混凝土抗氯离子渗透性能试验研究  

Experimental study on chloride penetration resistance performance of recycled concrete

作　　者：叶腾[1] 徐毅慧[1] 张锦[1] 

机构地区：[1]漳州职业技术学院,福建漳州363000

出　　处：《长春工业大学学报》2014年第5期567-571,共5页Journal of Changchun University of Technology

基　　金：福建漳州市自然科学基金资助项目(zz2012J08)

摘　　要：改变再生粗骨料掺量、粉煤灰掺量、水胶比等参数,研究不同配合比对再生混凝土抗氯离子渗透能力的影响规律。试验结果表明,降低水胶比对再生混凝土抗氯离子渗透性能有利;再生混凝土氯离子迁移系数随着再生粗骨料替代率的增大而增大,抗氯离子渗透性能下降。掺加粉煤灰可以改善再生混凝土抗氯离子渗透性能,对于早龄期再生混凝土粉煤灰掺量在10%-20%之间为宜。By changing some elements such as dosage of recycled coarse aggregate ,content of ash and water-cement ratio , we study the effect of different mix proportions on the chloride penetration resistance of recycled concrete .Experimental result shows that the reduction of water-cement ratio is beneficial to the chloride penetration resistance performance of recycled concrete ,and the chloride transport coefficient of recycled concrete increases with the rise of replacement ratio of recycled coarse aggregate but the chloride penetration resistance decreases .Addition of ash can improve the chloride penetration resistance performance of recycled concrete ,and the content of ash in early-age recycled concrete may be between 10% and 20% .

关 键 词：再生混凝土 再生粗骨料 氯离子渗透 粉煤灰 水胶比 

分 类 号：TU528[建筑科学—建筑技术科学]