摘要
本文研究了建筑垃圾再生混凝土的收缩、抗碳化、抗氯离子渗透、抗冻融等性能。研究结果表明再生混凝土试块收缩较大,抗碳化和抗氯离子渗透性能中等,但抗冻融性较差。通过掺加粉煤灰和高效减水剂,降低水胶比可以提高再生混凝土的耐久性能。
This paper gives the research on the quality of the reclyed concrete’s shrinkage,carbonation resistance chloride-permeation resistance and freezing and thawing resistance.The results show that the durability can be improved effectively by lowing water-binder ratio and with fly-ash.It also indicates that the reclyed concrete’s shrinkage is more than common concrete and the quantity of the carbonation resistance and chloride-permeation resistance is just medium.While it owns the poor performance in the freezing and thawing resistance.
出处
《商品混凝土》
2009年第3期34-36,44,共4页
Ready-Mixed Concrete
基金
北京市重大科技需求专项Z07020601480702
关键词
建筑垃圾
再生混凝土
耐久性
construction waste
recycled concrete durability
