使用废玻璃进行部分聚合物替代的钢筋混凝土梁的剪切性能:通过数字成像处理进行比较分析和理论方法
Özer Zeybek1, Boğaçhan Başaran2, Ceyhun Aksoylu3
1Department of Civil Engineering, Faculty of Engineering, Mugla Sitki Kocman University, Mugla 48000, Turkey.
ACS omega
|October 14, 2024
概括
废玻璃聚合物 (WGA) 可以取代混凝土梁中的细和粗聚合物,提高可持续性. 优化使用WGA作为精细聚合物增强了承载能力,而过度使用粗聚合物则降低了承载能力.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 混凝土生产在很大程度上依赖于天然原料,如细聚合物 (FA) 和粗聚合物 (CA).
- 废玻璃聚合物 (WGA) 是一种潜在的可持续替代品,可以减少对原始资源的依赖.
- 了解WGA对混凝土结构性能的影响对于其有效实施至关重要.
研究的目的:
- 研究钢筋混凝土梁 (R-C-Bs) 的剪切性能,使用废玻璃聚合物 (WGA) 作为细聚合物 (FA) 和粗聚合物 (CA) 的部分替代品.
- 确定WGA的最佳比例和杆间距对R-C-Bs的剪切行为的影响.
- 将实验结果与ACI 318和EC2设计代码的预测进行比较.
主要方法:
- 生产15个钢筋混凝土梁,其间距和WGA比例各不相同 (0%,10%,20%的FA和CA替代).
- 实验测试以评估剪切性能,断裂特性和承载能力.
- 图像处理技术的应用,以分析光束中的损伤和微裂.
主要成果:
- 以高达20%的WGA取代FA,提高了R-C-Bs的承载能力.
- 增加WGA比率超过10%作为CA,加上增加杆间距,显著减少光束容量.
- 基于ACI 318和EC2代码计算的切削强度高估了实验结果,特别是对于有不充分的脚间距的梁.
结论:
- 废玻璃聚合物可以有效地用作在混凝土梁中部分替代细聚合物的20%.
- 钢筋混凝土梁的WGA和杆间距的比例极大地影响了钢筋混凝土梁的剪切性能和容量.
- 当前的设计规范可能会高估梁的剪切强度,而梁的杆间距和WGA整合不足,这凸显了需要精确的评估方法的需要.
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