摘要
依据港珠澳大桥人工岛隧道混凝土低渗透、高抗裂以及长寿命的设计要求,采用低水胶比、高掺量矿物掺合料的方法配制满足要求的高性能混凝土,通过分析水胶比、胶凝材料用量以及胶凝材料组成对混凝土的工作性、强度、耐久性以及体积稳定性的影响规律,优选出符合人工岛隧道混凝土各项性能指标的混凝土配合比,降低隧道混凝土结构开裂的风险。
Based on the design requirements for concrete of the artificial island tunnel of Hong Kong-Zhuhai-Macao Bridge, which were of low permeability,high resistance crack and long service life,high performance concrete was prepared by using low wa- ter-binder ratio,high volume mineral admixtures. Influences of water-binder ratio,cementitious material consumption and their compo- sition on workability,strength, durability and volume stability were analyzed. The concrete mix proportion of concrete that satisfies the performance requirements of the artificial island tunnel is preferably selected to reduce the risk of tunnel concrete cracking.
作者
焦运攀
刘可心
高凡
占文
JIAO Yunpan;LIU Kexin;GAO Fan;ZHAN Wen(CCCC Wuhan Harbor Engineering Design and Research Institute Co. Ltd.,Wuhan 430040,China;Hubei Key Lab of Advanced Materials and Reinforcement Technology Research for Marine Environment Structures,Wuhan 430040, China)
出处
《新型建筑材料》
北大核心
2018年第5期10-13,共4页
New Building Materials
关键词
人工岛隧道
混凝土配合比
水胶比
胶凝材料用量
胶凝材料组成
artificial island tunnel
concrete mix proportion
water-binder ratio
cementitious material consumption
eementitiousmaterial composition
