Effects of steel fiber addition on mechanical properties of concrete and RC beams
Effects of steel fiber addition on mechanical properties of concrete and RC beams
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DOI：
10.1016/j.conbuildmat.2005.12.006
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发表时间：
2007-03-01
影响因子：
7.4
通讯作者：
Ari, Kamura
中科院分区：
文献类型：
--
作者：
Altun, Fatih;Haktanir, Tefaruk;Ari, Kamura
分别以0 kg/m3、30 kg/m3、60 kg/m3的剂量添加Dramix RC-80/0.60-BN型钢纤维（SF）来制备C20和C30等级的混凝土，并测量它们的抗压强度、劈裂抗拉强度、弹性模量和韧性。九根外部尺寸为300 x 300 x 2000 mm的钢筋混凝土（RC）梁，设计为抗拉破坏，所有钢筋均具有相同的钢筋，SF剂量为0 kg/m3、30 kg/m3、60 kg/m3，C20级混凝土，并制作了9根具有相同特性的C30级混凝土受拉破坏的钢筋混凝土梁并在简单弯曲下测试。所有这些钢筋混凝土和钢纤维钢筋混凝土（SFARC）梁在简单弯曲下的荷载与跨中挠度的关系进行了记录。首先，以比较的方式测定不含SF和含30 kg/m3（3）和60 kg/m3（3）剂量的SF的C20和C30等级混凝土的机械性能。还以比较的方式测定了C20和C30级混凝土的RC和SFARC梁的弯曲性能和韧性。实验确定的（中段负荷）（SFs剂量）和（韧性）（SFs剂量）的关系，以揭示这些关键性能的混凝土类和SFs剂量的定量影响。(c)2005爱思唯尔有限公司保留所有权利。
C20 and C30 classes of concrete are produced each with addition of Dramix RC-80/0.60-BN type of steel fibers (SFs) at dosages of 0 kg/m(3), 30 kg/m(3), 60 kg/m(3), and their compressive strengths, split tensile strength, moduli of elasticity and toughnesses are measured. Nine reinforced concrete (RC) beams of 300 x 300 x 2000 mm outer dimensions, designed as tension failure and all having the same steel reinforcement, having SFs at dosages of 0 kg/m3, 30 kg/m3, 60 kg/m3 with C20 class concrete, and nine other RC beams of the same peculiarities with C30 class concrete again designed as tension failure and all having the same reinforcement are produced and tested under simple bending. The load versus mid-span deflection relationships of all these RC and steel-fiber-added RC (SFARC) beams under simple bending are recorded. First, the mechanical properties of C20 and C30 classes of concrete with no SFs and with SFs at dosages of 30 kg/m(3) and 60 kg/m(3) are determined in a comparative way. The flexural behaviours and toughnesses of RC and SFARC beams for C20 and C30 classes of concrete are also determined in a comparative way. The experimentally determined (mid-section load)-(SFs dosage) and (toughness)-(SFs dosage) relationships are given to reveal the quantitative effects of concrete class and SFs dosage on these crucial properties. (c) 2005 Elsevier Ltd. All rights reserved.