An experimental study on the interface shear strength of reinforced geopolymer concrete corbels

IF 1.6 Q3 ENGINEERING, CIVIL

Australian Journal of Civil Engineering Pub Date : 2021-10-28 DOI:10.1080/14488353.2021.1984371

Sumanth Kumar B, Rama Seshu D

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引用次数: 3

Abstract

ABSTRACT Geopolymer concrete is gradually assuming significance from the point of sustainability in the concrete industry. The reinforced concrete corbels are used for supporting the precast beams. This paper presents an experimental investigation on the interface shear strength of reinforced geopolymer concrete corbels. A total of forty-five symmetric double cantilever reinforced GPC corbels were cast and tested. The parameters of the study include the compressive strength of GPC and the percentage of secondary reinforcement i.e. closed loop ties crossing the interface. The experimental shear strength at the interface of reinforced geopolymer concrete corbels obtained is compared with available analytical models and design codes applicable to the conventional concrete. The results of the study indicated that the interface shear capacity of geopolymer concrete was evaluated based on conventional concrete analytical models that underestimates the shear capacity of GPC corbels. Further the experimental shear strengths of corbel are about 9% higher than the predicted interface shear strength of GPC corbels using the analytical expression proposed in this paper.

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加筋地聚合物混凝土梁的界面抗剪强度试验研究

摘要：从混凝土行业的可持续性角度来看，地质聚合物混凝土正逐渐发挥着重要作用。钢筋混凝土牛腿用于支撑预制梁。本文对地质聚合物混凝土牛腿的界面抗剪强度进行了试验研究。共铸造并测试了45个对称双悬臂增强GPC牛腿。研究的参数包括GPC的抗压强度和二次加固的百分比，即穿过界面的闭环连接。将所获得的加筋地质聚合物混凝土牛腿界面处的试验抗剪强度与适用于传统混凝土的现有分析模型和设计规范进行了比较。研究结果表明，地质聚合物混凝土的界面抗剪能力是基于传统的混凝土分析模型来评估的，该模型低估了GPC牛腿的抗剪能力。此外，牛腿的实验剪切强度比本文提出的分析表达式预测的GPC牛腿的界面剪切强度高出约9%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Australian Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

3.90

自引率

7.70%

发文量