DEVELOPMENT OF FIBER REINFORCED SPRAY CONCRETE IN REPARATION ENGINEERING
This paper present a new concept of hybrid fiber reinforced spray concrete, based on the analysis of the advantages and disadvantages of single-doped fiber, includrg steel fiber (SF) and polypropylene fiber (PPF)spray concrete, and the research and application of fiber reinforced spray concrete in domestic and international. The new method of hybrid fiber reinforced spray concrete that included steel fiber and low-elastic polypropylene fiber (PPF) has been brought forth, which would improve spray concretes cracking resistance, tensile strength, ductility and other physical and mechanical properties. According to binary or ternary hybrid fiber reinforced concrete jet feasibility pitch-based fibers theory, both cost effectiveness and performance should be taking into account, SF and PPF could add to the spray concrete by considerable mix design and orthogonal design.In order to develop the method of hybrid fiber reinforced spray concrete rapidly and make wid use of the hybrid fiber reinforced spray concrete in reparation and reinforcement engineering, spray technology and construction process should be developed as well as quality control measures and construction cost control.
hybrid fiber spray concrete mechanical properties durability reparation engineering
Dong-Tao Xia Shi-Lang Xu
School of Civil Engineering and Architecture, Hubei University of Technology, Hubei 430064 P.R. Chin School of Civil Engineering, Dalian University of Science and Technology, Dalian 210053 P.R. China
国际会议
广州
英文
139-143
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）