Mechanical Properties of Geopolymer Recycled Brick Aggregate Concrete-Filled Square Steel Tubular Columns Under Axial Compression

LIU Ruyue; ZHU Yunzhao; YAN Guiyun; ZHENG Lianqiong; WANG Di

doi:10.3724/j.gyjzG25011201

Volume 56 Issue 7

Jul. 2026

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LIU Ruyue, ZHU Yunzhao, YAN Guiyun, ZHENG Lianqiong, WANG Di. Mechanical Properties of Geopolymer Recycled Brick Aggregate Concrete-Filled Square Steel Tubular Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(7): 63-71. doi: 10.3724/j.gyjzG25011201

Citation:

LIU Ruyue, ZHU Yunzhao, YAN Guiyun, ZHENG Lianqiong, WANG Di. Mechanical Properties of Geopolymer Recycled Brick Aggregate Concrete-Filled Square Steel Tubular Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(7): 63-71. doi: 10.3724/j.gyjzG25011201

Citation:

LIU Ruyue, ZHU Yunzhao, YAN Guiyun, ZHENG Lianqiong, WANG Di. Mechanical Properties of Geopolymer Recycled Brick Aggregate Concrete-Filled Square Steel Tubular Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(7): 63-71. doi: 10.3724/j.gyjzG25011201

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Mechanical Properties of Geopolymer Recycled Brick Aggregate Concrete-Filled Square Steel Tubular Columns Under Axial Compression

doi: 10.3724/j.gyjzG25011201

1. Fuzhou Technology Innovation of Green Constructionand Building Industrialization, Fujian University of Technology, Fuzhou 350118, China;
2. School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China

Received Date: 2025-01-12
Available Online: 2026-08-31
Publish Date: 2026-07-20

Abstract

Abstract

Axial compressive tests were performed on the square steel tubular slender column filled with geopolymer recycled brick aggregate concrete （FSSTSC-GRBAC） with different aggregate replacement ratios and slenderness ratios. The influence of failure modes， bearing capacity， ductility， and energy dissipation on the mechanical properties of FSSTSC-GRBAC were analyzed. The results showed that the mechanical properties of FSSTC-GRBAC under axial compression were similar to those of ordinary concrete-filled steel tube columns. The FSSTC-GRBAC experienced elastic， elastoplastic， and failure stages， and finally exhibited local instability failure. The bearing capacity and energy dissipation capacity decreased with the increase of the replacement ratio and slenderness ratio， while the ductility was improved. The influence of the slenderness ratio on bearing capacity was consistent and more significant. The bearing capacities of specimens with slenderness ratios of 42.64 and 63.95 were 0.73% and 20.89% lower， respectively， than that of the specimen with a slenderness ratio of 21.32. Analysis showed that the bearing capacity calculated using the methods in the Technical Code for Concrete Filled Steel Tubular Structures （GB 50936-2014）， the Technical Specification for Solid and Hollow Concrete-Filled Steel Tubular Structure （CECS 254∶2012）， and the Technical Specification for Concrete-Filled Steel Tubular Structures （DBJ/T 13-51-2020） exhibited a certain safety redundancy. This indicates that these standards are applicable for predicting the bearing capacity of GBARC-FSSTSC under axial compression.

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References(27)

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