Influence of mortar coating on the thermal analysis of steel profiles in a fire situation

IF 0.6 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Acta Scientiarum-technology Pub Date : 2022-08-26 DOI:10.4025/actascitechnol.v45i1.60876

R. Palhares, Renato Silva Nicoletti, Maicon de Freitas Arcine, Alex Sander Clemente de Souza

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Abstract

This article aims to perform the thermal analysis of different welded profiles of the VS and CS series with and without thermal protection subjected to fire action according to the nominal fire curve ISO 834. The fire protection studied was the contour type of constant thickness and the coating material considered was Blaze Shield II mortar. The temperature evolution in the profiles was evaluated using the analytical models prescribed by ABNT NBR 14323:2013 and three-dimensional numerical models using the ABAQUS® software. In general, it was observed that the results obtained by the analytical methods were in agreement with the numerical ones and that the use of mortar as fire protection evaluated in this study proved to be an efficient solution for fire protection. It was also possible to demonstrate that the increase in coating thickness, the reduction in thermal conductivity, and the increase in the specific heat of the constituent material provide a slower evolution of the temperature of the steel structural elements.

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火灾情况下砂浆涂层对钢型材热分析的影响

本文的目的是根据ISO 834标称火灾曲线，对有热保护和没有热保护的VS和CS系列不同焊接型材在火灾作用下的热分析。研究的防火为等厚轮廓型，考虑的涂层材料为Blaze Shield II砂浆。采用ABNT NBR 14323:2013规定的分析模型和ABAQUS®软件的三维数值模型对剖面的温度演变进行了评估。总的来说，分析方法得到的结果与数值结果一致，本研究评价的砂浆防火是一种有效的防火解决方案。也有可能证明涂层厚度的增加，导热系数的降低，以及组成材料比热的增加提供了钢结构元件温度的缓慢演变。

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

Acta Scientiarum-technology 综合性期刊-综合性期刊

CiteScore

1.40

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal publishes original articles in all areas of Technology, including: Engineerings, Physics, Chemistry, Mathematics, Statistics, Geosciences and Computation Sciences. To establish the public inscription of knowledge and its preservation; To publish results of research comprising ideas and new scientific suggestions; To publicize worldwide information and knowledge produced by the scientific community; To speech the process of scientific communication in Technology.