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High Strength Reinforced Concrete Beams with Exposed Main Steel

机译：主体钢裸露的高强度钢筋混凝土梁

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摘要

As part of our longstanding experimental and theoretical works on maintenance and repair ofrnconcrete structures, this paper addresses some aspects of the most common repair technique inrnwhich, in the course of applying the repair materials, the concrete cover and steel-concrete bondrnover certain (shear dominated) regions of the damaged simply supported reinforced concrete (RC)rnbeams are removed prior to the application of the repair material. In particular, much emphasis willrnbe placed on verifying a previously reported simple (hand-based) lower bound predictive model (byrnRaoof and Senussi) for RC beams made of normal strength concrete, with exposure of main steelrnlocated within the shear dominated regions, when dealing with RC beams made of high strengthrnconcrete. To this end, use will be made of some recently obtained large scale test results by thernpresent authors, which cover concrete cube compressive strengths of up to 110 MPa.
机译：作为我们长期从事混凝土结构维护和修理的实验和理论工作的一部分，本文探讨了最常见的修理技术的某些方面，这些技术在使用修理材料的过程中，混凝土（混凝土）和钢筋混凝土的粘结（以剪切力为主） ）在使用修补材料之前，先清除受损的简支钢筋混凝土（RC）梁的区域。特别是，将重点放在验证先前报告的由普通强度混凝土制成的RC梁的简单（基于手）的下界预测模型（byrnRaoof和Senussi），并在处理时将主要钢暴露在剪切支配区域内。高强度钢筋混凝土梁。为此，将利用现有作者最近获得的一些大规模测试结果，这些结果涵盖了高达110 MPa的混凝土立方体抗压强度。

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