Abstract：The mix ratio of steel fiber reinforced concrete (SFRC) was optimized using the principles that workability must meet the pumping demand and anti-cracking performance should be optimal. The effect of SFRC on the initial cracking load, the ultimate load and the crack width of the reinforced concrete (RC) member were analyzed in this paper. It was found that the admixture had good preservation of moisture and adhesion and the fibers distributed homogeneously in one hour out of the machine. According to the pumping results, the SFRC could be pumped vertically up to 306 m. Based on the standard computation formula of cracks, the maximum crack width of an RC member with 0.8% steel fiber (by volume) is about 32% lower than that of standard RC member. Through an experimental research on full-scale model tests for the steel and concrete composite anchorage zone on a pylon, the SFRC not only remarkably increases the crack resistance and the ultimate load, but the initial load also improves 33% approximately. It is also indicated that plastic shrinkage cracking of SFRC in which volume fraction of steel fibers is 0.8% can be restrained obviously and the unrestrained drying shrinkage can be diminished by about 50% at early age. The results confirmed that the SFRC can lessen the shrinkage crack of concrete and enhance markedly the direct tensile strength. Therefore, the SFRC can solve the key question of crack resistance for the anchorage zone of a bridge tower.
出版日期: 2008-06-05
引用本文:
. Cracking resistance performance of super vertical-distance
pumped SFRC[J]. Frontiers of Architecture and Civil Engineering in China - Selected Publications from Chinese Universities, 2008, 2(2): 179-183.
JIANG Jinyang, SUN Wei, ZHANG Yunsheng, CHEN Cuicui, WANG Jing. Cracking resistance performance of super vertical-distance
pumped SFRC. Front. Struct. Civ. Eng., 2008, 2(2): 179-183.
Barragan B E, Gettu R. Uniaxial tension test for steelfiber reinforced concrete-a parametric study. Cement and Concrete Composites.2003, 25(7):767-777 doi: 10.1016/S0958‐9465(02)00096‐3
1
Barragan B E Gettu R Uniaxial tension test for steelfiber reinforced concrete--a parametric studyCement and Concrete Composites 2003 25(7)767777. doi:10.1016/S0958‐9465(02)00096‐3
Barragan B E, Gettu R. Uniaxial tension test for steelfiber reinforced concrete-a parametric study. Cement and Concrete Composites.2003, 25(7):767-777 doi: 10.1016/S0958‐9465(02)00096‐3
2
Lee M K Barr B G An overview of the fatiguebehaviour of plain and fiber reinforced concreteCement & Concrete Composites 2004 26(4)299305. doi:10.1016/S0958‐9465(02)00139‐7
Lee M K, Barr B G. An overview of the fatiguebehaviour of plain and fiber reinforced concrete. Cement & Concrete Composites.2004, 26(4):299-305 doi: 10.1016/S0958‐9465(02)00139‐7
Lee M K, Barr B G. An overview of the fatiguebehaviour of plain and fiber reinforced concrete. Cement & Concrete Composites.2004, 26(4):299-305 doi: 10.1016/S0958‐9465(02)00139‐7
3
Song P S Hwang S Mechanical properties of high-strengthsteel fiber-reinforced concreteConstructionand Building Materials 2004 18(9)669673. doi:10.1016/j.conbuildmat.2004.04.027
Song P S, Hwang S. Mechanical properties of high-strengthsteel fiber-reinforced concrete. Constructionand Building Materials.2004, 18(9):669-673 doi: 10.1016/j.conbuildmat.2004.04.027
Song P S, Hwang S. Mechanical properties of high-strengthsteel fiber-reinforced concrete. Constructionand Building Materials.2004, 18(9):669-673 doi: 10.1016/j.conbuildmat.2004.04.027
4
Jiang Jinyang Sun Wei Dai Jie et al.The key properties and test study of super vertical-distancepumped steel fiber concreteJournal of DalianUniversity of Technology 2008 (inChinese)
Jiang Jinyang, Sun Wei, Dai Jie, et al. The key properties and test study of super vertical-distancepumped steel fiber concrete. Journal of DalianUniversity of Technology.2008(inChinese)
Jiang Jinyang, Sun Wei, Dai Jie, et al. The key properties and test study of super vertical-distancepumped steel fiber concrete. Journal of DalianUniversity of Technology.2008(inChinese)
5
Water Resources and the Chinese Academy of Engineering, acivil engineering construction, Durability of engineering structuresand the safety of the project advisory group. Design andConstruction of Concrete Structures Durability GuideBeijingConstruction Industry Press 2004 3136 (in Chinese)
Water Resources and the Chinese Academy of Engineering, acivil engineering construction, Durability of engineering structuresand the safety of the project advisory group. Design and Construction of Concrete Structures Durability Guide. Beijing, Construction Industry Press, 200431-36(in Chinese)
Water Resources and the Chinese Academy of Engineering, acivil engineering construction, Durability of engineering structuresand the safety of the project advisory group. Design and Construction of Concrete Structures Durability Guide. Beijing, Construction Industry Press, 200431-36(in Chinese)
6
Zhao Guofan Peng Shouming et al.Steel Fiber ReinforcedConcrete StructureBeijingConstruction Industry Press 1999 4662 (in Chinese)
Zhao Guofan, Peng Shouming, et al. Steel Fiber ReinforcedConcrete Structure. Beijing, Construction Industry Press, 199946-62(in Chinese)
Zhao Guofan, Peng Shouming, et al. Steel Fiber ReinforcedConcrete Structure. Beijing, Construction Industry Press, 199946-62(in Chinese)
7
Swaddiwudhipong S Lu H R Wee T H Direct tension test and tensile strain capacity of concreteat early ageCement and Concrete Research 2003 33(12)20772084. doi:10.1016/S0008‐8846(03)00231‐X
Swaddiwudhipong S, Lu H R, Wee T H. Direct tension test and tensile strain capacity of concreteat early age. Cement and Concrete Research.2003, 33(12):2077-2084 doi: 10.1016/S0008‐8846(03)00231‐X
Swaddiwudhipong S, Lu H R, Wee T H. Direct tension test and tensile strain capacity of concreteat early age. Cement and Concrete Research.2003, 33(12):2077-2084 doi: 10.1016/S0008‐8846(03)00231‐X
