Improvement in Bending Performance of Reinforced Concrete Beams Produced with Waste Lathe Scraps
Improvement in Bending Performance of Reinforced Concrete Beams Produced with Waste Lathe Scraps
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DOI：
10.3390/su141912660
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发表时间：
2022-10-01
期刊：
影响因子：
3.9
通讯作者：
Sabri, Mohanad Muayad Sabri
中科院分区：
文献类型：
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作者：
Karalar, Memduh;Ozkilic, Yasin Onuralp;Sabri, Mohanad Muayad Sabri
在这项研究中，通过经验测试，清楚地检测到不同比例的受拉钢筋和废车床废料对钢筋混凝土梁（RCB）的失效和弯曲行为的影响。首先进行材料强度和一致性测试，然后进行1/2比例梁测试。为此，实验室总共制作了 12 个样本，然后进行测试以检查弯曲下的失效机制。在创建文本矩阵时选择了两个变量。它们是梁的纵向拉筋率（三个不同级别）和废车床废料的体积比（四个不同级别：0％、1％、2％和3％）。对制作的简支梁进行两点弯曲试验。为了防止剪切破坏，使用了足够的箍筋。因此，在每次测试期间都观察到弯曲行为的变化。添加1%、2%和3%废车床废料的混凝土，其抗压强度比不含废料的混凝土分别提高了11.2%、21.7%和32.5%。根据坍落度试验结果，随着混凝土拌合料中废车床边角料比例的增加，混凝土稠度降低。除了材料测试之外，还从对梁进行的测试中获得了以下结果。结果发现，添加车床废料后，梁的力学性能得到改善。据观察，不同比例的拉筋和废车床废料对 RCB 的失效和弯曲影响不同。虽然刚度和强度没有显着变化，但随着车床废料的添加，延展性显着增加。
In this study, the impacts of different proportions of tension reinforcement and waste lathe scraps on the failure and bending behavior of reinforced concrete beams (RCBs) are clearly detected considering empirical tests. Firstly, material strength and consistency test and then 1/2 scaled beam test have been carried out. For this purpose, a total of 12 specimens were produced in the laboratory and then tested to examine the failure mechanism under flexure. Two variables have been selected in creating text matrix. These are the longitudinal tension reinforcement ratio in beams (three different level) and volumetric ratio of waste lathe scraps (four different level: 0%, 1%, 2% and 3%). The produced simply supported beams were subjected to a two-point bending test. To prevent shear failure, sufficient stirrups have been used. Thus, a change in the bending behavior was observed during each test. With the addition of 1%, 2% and 3% waste lathe scraps, compressive strength escalated by 11.2%, 21.7% and 32.5%, respectively, compared to concrete without waste. According to slump test results, as the waste lathe scraps proportion in the concrete mixture is increased, the concrete consistency diminishes. Apart from the material tests, the following results were obtained from the tests performed on the beams. It is detected that with the addition of lathe waste, the mechanical features of beams improved. It is observed that different proportions of tension reinforcement and waste lathe scraps had different failure and bending impacts on the RCBs. While there was no significant change in stiffness and strength, ductility increased considerably with the addition of lathe waste.