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EXPERIMENTAL STUDY ON THE FLEXURAL TOUGHNESS OF STEEL FIBER REINFORCED CONCRETE
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摘要: 试验研究和工程实践表明,钢纤维混凝土具有良好弯曲韧性,《纤维混凝土结构技术规程》(CECS38∶2004)在隧洞支护与补砌、工业建筑地面设计中引入弯曲韧度指数和弯曲韧度比,这与以往基于ASTMC1018弯曲韧性指数不同。通过四点弯曲梁弯曲韧性试验,利用不同方法计算弯曲韧性指标,对钢纤维体积率和混凝土强度对钢纤维混凝土弯曲韧性的影响进行分析。Abstract: The excellent flexural toughness of steel fiber reinforced concrete has been testified by experimental studies and practice of project,and in Technical Specification of Fiber Reinforced Concrete Structure(CSCS 38∶2004),the toughness index is used in the designing of industrial structure ground and shoring of tunnel,but it is different that based on ASTM C1018.In this study,by the experiment on flexural toughness of the steel fiber reinforced concrete specimen,the index is calculated by various methods,and the influence of the volume ratio and concrete strength is studied.
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赵国藩,彭少民,黄承逵.钢纤维混凝土结构.北京:中国建筑工业出版社,2000:103-105 [2] CECS 38:2004 纤维混凝土结构技术规程 [3] CECS 13:89 钢纤维混凝土试验方法 [4] ASTM C1018-85 Standard Test Method for Flexural Toughness and First-Crack Strength of Fiber Reinforced Concrete (Using Beam with Third Point Loading) [5] JSCE Standard SF-4 Method of Test for Flexural Strength and Flexural Toughnss of Fiber Reinforced Concrete [6] Nataraja M C,Dhang N,Gupta A P.Toughness Characterization of Steel Fiber-Reinforced Concrete by JSCE Approach.Cementant and Concrete Research,2000(30):593-597 [7] 赵顺波,孙晓燕,李长永,等.高强钢纤维混凝土弯曲韧性试验研究.建筑材料学报,2003,6(1):95-99 [8] 朱海堂,高丹盈,谢丽,等.钢纤维高强混凝土弯曲韧性试验研究.硅酸盐学报,2004,32(5):656-660 [9] 邓宗才,彭书成.哑铃型钢纤维粉煤灰混凝土基本力学性能及抗弯韧性.公路,2003(9):149-155 [10] 姚武,蔡江宁,吴科如,等.钢纤维混凝土的抗弯韧性研究.混凝土,2002(6):31-33 -
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