摘要
对配制的活性粉末混凝土(RPC)进行了耐久性研究。得到RPC混凝土在热养护后14d内强度有倒缩现象,并存在着较大的化学收缩和干缩。RPC混凝土水胶比为0.21时,抗氯离子渗透能力要比高强度(HSC)混凝土水胶比为0.25时的大得多,RPC混凝土的抗化学侵蚀能力要比HSC混凝土大。RPC混凝土具有抗液氮冻融的能力。
The durability of reactive powder concrete （RPC） was studied. The results indicate that the strength of RPC has the phenomenon of reduction within 14 d after heat curing,and has great chemical shrinkage and dry. shrinkage.Under the condition of water-binder ratio 0.21 the chloride ion-penetration resistance of RPC is much greater than that of high strength concrete （HSC） with water-binder ratio of 0.25 and the chemical corrusion resistance of RPC is greater than that of HSC. RPC has the ability of freezing and thawing resistance in liquid nitrogen.
出处
《新型建筑材料》
北大核心
2006年第6期33-36,共4页
New Building Materials
关键词
活性粉末混凝土
强度倒缩
体积收缩
氯离子渗透
液氮冻融
reactive powder concrete
strength reduction
volume shrinkage
chloride ion-penetration
freezing and thawing in liquid nitrogen
