Research on the Mechanical Properties of High-Strength Geopolymer Concrete Exposed to Elevated Temperatures

LIANG Dongyao; LI Fukun; YANG Qingmei; Li Chunhua; LI Minghui; YANG Haifeng

doi:10.3724/j.gyjzG24082707

Volume 56 Issue 6

Jun. 2026

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LIANG Dongyao, LI Fukun, YANG Qingmei, Li Chunhua, LI Minghui, YANG Haifeng. Research on the Mechanical Properties of High-Strength Geopolymer Concrete Exposed to Elevated Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 256-264. doi: 10.3724/j.gyjzG24082707

Citation:

LIANG Dongyao, LI Fukun, YANG Qingmei, Li Chunhua, LI Minghui, YANG Haifeng. Research on the Mechanical Properties of High-Strength Geopolymer Concrete Exposed to Elevated Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 256-264. doi: 10.3724/j.gyjzG24082707

Citation:

LIANG Dongyao, LI Fukun, YANG Qingmei, Li Chunhua, LI Minghui, YANG Haifeng. Research on the Mechanical Properties of High-Strength Geopolymer Concrete Exposed to Elevated Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 256-264. doi: 10.3724/j.gyjzG24082707

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Research on the Mechanical Properties of High-Strength Geopolymer Concrete Exposed to Elevated Temperatures

doi: 10.3724/j.gyjzG24082707

1. Guangxi Road Construction Group Construction Engineering Co., Ltd., Nanning 530004, China;
2. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China;
3. School of Civil Engineering, Tongji University, Shanghai 200092, China;
4. China State Construction Company Limited Algeria Company, Beijing 100125, China

Received Date: 2024-08-27
Available Online: 2026-07-06

Abstract

Abstract

As a low-carbon and eco-friendly cementitious material， geopolymer exhibits excellent mechanical properties and is an ideal substitute for cement in high-strength concrete. However， elevated temperatures degrade the performance of concrete， compromising structural safety. This study investigated the mechanical properties of high-strength geopolymer concrete （HGPC） under uniaxial compression， considering temperature （20 ℃， 200 ℃， 400 ℃， and 600 ℃） and concrete strength grade （C70， C80） as variables. The results indicated that the failure mode of HGPC shifted from aggregate penetration to failure at the interfacial transition zone， accompanied by significant mass and strength loss. At 600 ℃， the mass loss rate reached 6.8%， while fcuT/fcu20 dropped to 0.39 of its room-temperature value. Additionally， fcT/fcuT was lower than that of conventional and high-strength concrete， and it further decreased with increasing temperature. A stress-strain constitutive model incorporating damage parameters was developed， demonstrating strong agreement with experimental data and providing theoretical support for HGPC applications in high-temperature environments.
- high-strength geopolymer concrete,
- high-temperature test,
- uniaxial compressive strength,
- axial compressive strength,
- stress-strain constitutive relation,
- mass loss

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References(27)

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