A novel experimental method for measuring the direct tensile strength of concrete

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-03-18 DOI:10.1515/mt-2023-0288

Oussama Merabet, Mohamed Bentchikou, Nasreddine Amoura, Ahmed Elshafie

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引用次数: 0

Abstract

This study deals with the development of a load-converting device designed for measuring the direct tensile strength of the concrete. In this regard, a new testing technique based on a novel testing device and modified cylindrical (Ø 100 × 200) molds for the preparation of concrete samples is explained. The embedded rod method was adopted to transmit the uniaxial tensile load to the specimens using the universal compression machine and the current converting device. In order to examine the reliability of the suggested test method, a comparison with indirect tensile methods (splitting and three-point loading flexural tests) was made. The results show that the tensile strength of the tested specimens is lower for the direct tensile test obtained by the proposed test setup than for the flexural test and closer to the strength results obtained from the splitting test. As expected, all the specimens tested using the introduced test method demonstrated a sudden and unique fracture in the middle portion. Additionally, no slippage of embedded bars was noticed during the test.

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测量混凝土直接抗拉强度的新型实验方法

本研究涉及一种用于测量混凝土直接抗拉强度的荷载转换装置的开发。在这方面，解释了一种基于新型测试装置和用于制备混凝土试样的改进型圆柱（直径 100 × 200）模具的新测试技术。采用预埋杆法，利用万能压缩机和电流转换装置向试样传递单轴拉伸载荷。为了检验建议试验方法的可靠性，与间接拉伸方法（劈裂试验和三点加载弯曲试验）进行了比较。结果表明，用建议的试验装置进行直接拉伸试验获得的试样拉伸强度低于弯曲试验，更接近劈裂试验获得的强度结果。正如预期的那样，所有使用所引入的测试方法进行测试的试样都在中间部分出现了突然和独特的断裂。此外，在测试过程中没有发现预埋钢筋滑动。

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

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.