Ecemiş Ali Serdar, Madenci Emrah, Karalar Memduh, Fayed Sabry, Althaqafi Essam, Özkılıç Yasin Onuralp
Department of Civil Engineering, Necmettin Erbakan University, 42090 Konya, Türkiye.
Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42090 Konya, Türkiye.
Materials (Basel). 2024 Oct 11;17(20):4958. doi: 10.3390/ma17204958.
An investigation was conducted to assess the efficacy of using waste rubber as a substitute for a portion of an aggregate to enhance concrete's sustainability. For the purpose of accomplishing this objective, a total of 12 specimens were constructed and then subjected to a series of tests to investigate their bending behavior. The samples were constructed with the following dimensions: 1000 mm length and a 100 mm by 150 mm cross-sectional area. A few factors were selected, including the impacts of the longitudinal reinforcement ratio and the waste rubber ratio. Based on the volume of aggregates, rubber replacement rates of 0%, 5%, 10%, and 15% were investigated in this study. To assess the beam bending behavior, the stirrup width and spacing were kept constant at ∅6/10. The longitudinal reinforcement was composed of three diameters: ∅6 at the top (for all beams) and ∅8, ∅10, and ∅12 at the bottom. The experimental results demonstrated that the effects of varying amounts of waste rubber and tension reinforcement on the bending and cracking of reinforced concrete beams (RCBs) were varied. The findings indicate that the incorporation of waste rubber into concrete results in a reduction in both the load-carrying capacity and the level of deformation of the material. Additionally, it was shown that as the amount of waste rubber in the RCB increased, the energy absorption capacity and ultimate load decreased. There was a reduction in energy dissipation of 53.71%, 51.69%, and 40.55% for ∅8 when longitudinal reinforcement was applied at 5%, 10%, and 15% replacement, respectively. Additionally, there were reductions of 25.35%, 9.31%, and 58.15% for ∅10, and 38.69%, 57.79%, and 62.44% for ∅12, respectively.
开展了一项调查，以评估使用废橡胶替代部分集料来提高混凝土可持续性的效果。为实现这一目标，共制作了12个试件，然后对其进行一系列测试以研究其弯曲性能。试件的尺寸如下：长度为1000毫米，横截面面积为100毫米×150毫米。选取了几个因素，包括纵向配筋率和废橡胶率的影响。基于集料体积，本研究考察了橡胶替代率为0%、5%、10%和15%的情况。为评估梁的弯曲性能，箍筋宽度和间距保持在∅6/10不变。纵向钢筋由三种直径组成：顶部为∅6（所有梁均如此），底部为∅8、∅10和∅12。试验结果表明，不同数量的废橡胶和受拉钢筋对钢筋混凝土梁（RCB）的弯曲和开裂的影响各不相同。研究结果表明，将废橡胶掺入混凝土会导致材料的承载能力和变形水平降低。此外，结果表明，随着RCB中废橡胶含量增加，能量吸收能力和极限荷载降低。当纵向配筋以5%、10%和15%的替代率应用时，∅8的能量耗散分别降低了53.71%、51.69%和40.55%。此外，∅10的能量耗散分别降低了25.35%、9.31%和58.15%，∅12的能量耗散分别降低了38.69%
