使用普通混凝土或再生混凝土层对受损钢筋混凝土梁的修复行为的影响

IF 3 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Ala’ Taleb Obaidat
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引用次数: 0

摘要

本研究利用实验研究来探讨使用普通骨料混凝土(NAC)或再生骨料混凝土(RAC)作为新的混凝土层来修复弹丸对加固钢筋混凝土(RC)梁造成的损坏的效率。这项研究包括建造和测试八根由 RAC 和 NAC 制成的钢筋混凝土梁。这些梁首先受到弹丸的攻击,然后进行挠曲载荷测试,以评估使用 RAC 和 NAC 的效果。测试结果表明,与受损的对照试样相比,使用 RAC 或 NAC 的修复试样具有更高的承载能力。因此,这种方法可用于修复之前被射弹损坏的 RAC 或 NAC 梁。此外,研究结果表明,之前使用 NAC 层修复的受损 RC 梁的承载能力高于使用 RAC 层修复的受损 RC 梁的承载能力。在使用 NAC 和 RAC 进行修复时,承载能力分别大幅提高了(106%-118%)和(104%-113%)。因此,使用 NAC 或 RAC 混凝土比拆除更经济、环保和高效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of using normal concrete or recycled concrete layer on behavior of repaired projectile bullet damaged reinforced concrete beams
This study utilized experimental research to investigate the efficiency of using normal aggregate concrete (NAC) or recycled aggregate concrete (RAC) as a new concrete layer for repairing projectile bullet damage to strengthening reinforced concrete (RC) beams. This study comprised the construction and testing of eight RC beams made of RAC and NAC. They are initially subjected to projectile bullets and after that tested with flexure load to evaluate the effect of using RAC and NAC that was investigated. The findings of test results demonstrate that the repaired specimens with RAC or NAC experienced a higher load capacity than the damaged control specimens. As such, this approach could potentially use to restore RAC or NAC beams were previously damaged by projectile bullets. In addition, the findings of this research indicate that the load capacity of the damaged RC beams that were previously repaired using the NAC layer was higher than the load capacity of the damaged RC beams that were repaired using the RAC layer. The load capacity enhanced significantly of (106%–118%) and (104%–113%), respectively, when NAC and RAC are utilized in repairs. Therefore, using either NAC or RAC concrete is more economical, environmentally friendly, and efficient than demolishing.
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来源期刊
Structural Concrete
Structural Concrete CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
5.60
自引率
15.60%
发文量
284
审稿时长
3 months
期刊介绍: Structural Concrete, the official journal of the fib, provides conceptual and procedural guidance in the field of concrete construction, and features peer-reviewed papers, keynote research and industry news covering all aspects of the design, construction, performance in service and demolition of concrete structures. Main topics: design, construction, performance in service, conservation (assessment, maintenance, strengthening) and demolition of concrete structures research about the behaviour of concrete structures development of design methods fib Model Code sustainability of concrete structures.
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