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ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1589342
This article is part of the Research Topic Sustainability of Our Built Environments: Recycled and Bio-sourced Materials for the Construction Sector in the Context of Circular Economy View all articles
Study on Mechanical Properties of Modified Steel Slag Powder Concrete after High Temperature
Provisionally accepted
Xiaoyong Yang 
Yanbing Ye *- Guangxi University of Science and Technology, 柳州市, China
A study was conducted to investigate the effect of steel slag powder on the compressive strength of concrete cubes at high temperatures using 150 specimens with dimensions of 100mm× 100mm × 100mm. The specimens were fabricated by incorporating steel slag powder (SS) and zeolite powder (ZP), along with varying temperatures. A cubic compression test was performed, and the effect of different factors on the maximum stress was evaluated based on the test results.The results show that adding the correct proportion of steel slag powder under ZP00 conditions significantly improves the compressive strength of concrete, with an optimal replacement rate of 10% (SS10). The compressive strength of SS10-ZP20 exhibits the most significant increase under various operational conditions, with a 30.1% enhancement compared to SS00-ZP00. Moreover, an optimal quantity of zeolite powder can effectively improve the reactivity of steel slag powder. The compressive strength of concrete decreases to different extents under various operational conditions with rising temperatures. Concrete with steel slag powder has greater strength and a denser microstructure than that with SS00-ZP00. A fitting relationship was determined based on experimental data among steel slag replacement rate, mass loss rate, and concrete compressive strength.
Keywords: steel slag powder, high temperature, microstructure, Compressive Strength, Degradation mechanism
Received: 07 Mar 2025; Accepted: 07 Apr 2025.
Copyright: © 2025 Yang and Ye. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Yanbing Ye, Guangxi University of Science and Technology, 柳州市, China
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