MIX PROPORTION DESIGN AND MATERIAL CHARACTERISTICS OF HARD-FILL DAM
With small amount of cementitious material,Hardfill dams loosens restrictions onconstruction technics and converges both advantages of faceplant and roller compactedconcrete. By orthogonal design,parameters in mix proportion design are discussed andoptimized and factors having obvious effect on strength of Hardfill material are decided.Material characteristics of Hardfill are investigated in terms of strength,elastic modulus,cohesion and friction coefficient,ultimate tension,dry shrinkage and permeability corrosion.Results show that sand percentage and water solid ratio have the most influential effect onpertormances of Hardfill material,with the optimal sand percentage between 21％ and 27％and water solid ratio between 0.8 and 1.0. Hardfill is featured for low strength,littledeformability and bad permeability corrosion capability. Construction technics of Hardfilldam is quite simplified in comparison with RCC and is favorable to mechanical constructionin large scale.
hardfill dam mix proportion design cementitious material permeability
Chen Xia ZengLi He Yunlong
States Key Laboratory of Water Resource and Hydropower Engineering science,Wuhan University,Wuhan 430072,Hubei,PR China
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
585-591
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）