Influence of Heating–Cooling Regime on the Engineering Properties of Structural Concrete Subjected to Elevated Temperature

Author:

Paul Thanaraj Daniel,Kiran TattukollaORCID,Kanagaraj BalamuraliORCID,Nammalvar Anand,Andrushia A. Diana,Gurupatham Beulah Gnana AnanthiORCID,Roy KrishanuORCID

Abstract

Structural concrete has become a highly preferable building material in the construction industry due to its versatile characteristics, such as workability, strength, and durability. When concrete structures are exposed to fire, the mechanical properties of concrete degrade significantly. The research on the residual mechanical properties of concrete after exposure is necessary, particularly for the repair and rehabilitation of concrete elements and for the stability of the infrastructure. Factors, such as the grade of concrete, the effect of temperature exposure, and rapid water cooling, affect the residual strength characteristics of concrete. Considering these factors, the present investigation evaluates the mechanical properties of concrete using different grades, such as those ranging from 20 to 50 MPa, with an increment of 10 MPa. The specimens were exposed to different durations of fire from 15 to 240 min, following the standard rate of heating. A loss of strength was observed after fire exposure for all the grades of concrete. The rate of reduction in tensile and flexural strengths of the concrete was greater than that of compressive strength. The experimental results also showed that the strength reduction is greater for M50 than M20 concrete concerning the duration of heating. A microstructure evaluation confirmed the extent of damage to concrete under varied temperature conditions.

Publisher

MDPI AG

Subject

Building and Construction,Civil and Structural Engineering,Architecture

Reference48 articles.

1. Performance evaluation of lightweight insulating plaster for enhancing the fire endurance of high strength structural concrete;Kiran;J. Build. Eng.,2022

2. Effects of elevated temperatures on properties of concrete;Arioz;Fire Saf. J.,2007

3. Farzampour, A. (2019). Compressive Behavior of Concrete under Environmental Effects. Compressive Strength Concr., 92–104.

4. Temperature and humidity effects on behavior of grouts;Farzampour;Adv. Concr. Constr.,2017

5. Investigation on Improving the Residual Mechanical Properties of Reinforcement Steel and Bond Strength of Concrete Exposed to Elevated Temperature;Kiran;Case Stud. Constr. Mater.,2022

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3