DURABILITY PERFORMANCE OF RUHTCC BEAM UNDER FLEXURAL LOAD
Aiming at design issues of strictly anti-cracking structures or aseismic design incrucial locations of structures when using ultra high toughness cementitious composite(UHTCC),investigations on flexural behaviour of reinforced UHTCC (RUHTCC) membersare carried out by virtue of excellent crack dispersion and strain energy absorption abilities ofUHTCC. According to elastic theory,theoretical calculation of moment and curvature isdetailedly presented. Then experiment on RUHTCC beams without web reinforcement isperformed to verify theoretical equations. There is a good agreement between test results andtheoretical calculation. The safe calculated ductility index can be used to predict ductility ofstructures. Compared with reinforced concrete beams,UHTCC can delay yielding ofreinforcements and improve load bearing capacity and ductility of structures,then steel issaved. Durability of structures will be significantly improved by using UHTCC instead ofconcrete.
UHTCC ductility durability crack width load-bearing capacity
Xu Shilang Li Qinghua Song Shide
Department of Civil Engineering,Dalian University of Technology,Dalian 116024,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
205-215
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）