高强负温自密实混凝土结构损伤的探讨和控制  

Discussion and Control of High Strength Self-compact Negative Temperature Concrete Structure Damage

作　　者：林政[1] 

机构地区：[1]上海隧道工程股份有限公司

出　　处：《地下工程与隧道》2009年第1期24-27,共4页Underground Engineering and Tunnels

摘　　要：结合工程实际,对高强负温自密实混凝土的受冻损伤问题进行了描述和探讨,认为采用低水胶比、适当的复合矿物掺合料组成与掺加聚羧酸高效减水剂等是配制上海长江隧道联络通道具有较高抗冻能力高强负温自密实混凝土的基本技术措施;并根据技术分析。Combined with the actual engineering case,it deals with the freezing damage of the high strength negative temperature self-compacted concrete.It considers that the low water-binder ratio,reasonable compound mineral additive,polycarboxylate high efficiency water reducing agent are the basic factors for matching the high strength self-compact negative temperature concrete for Shanghai Yangtze River Tunnel's cross passage.Meanwhile,according to the technical analysis,construction procedure is given to resolve the concrete damage.

关 键 词：联络通道 负温混凝土 损伤张量 防冻剂 孔结构 抗冻 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]