Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete

Zhang, Jianpeng; Li, Gang; Yu, Daidong; Lei, Yingdong; Zhang, Yonghua

doi:10.3390/buildings14103103

Open AccessArticle

Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete

by

Jianpeng Zhang

¹,

Gang Li

^2,*

,

Daidong Yu

²,

Yingdong Lei

² and

Yonghua Zhang

³

¹

College of Physical Science and Technology, Yili Normal University, Yining 835000, China

²

College of Water Conservancy and Architecture, Shihezi University, Shihezi 832000, China

³

Audit Department, Yili Normal University, Yining 835000, China

^*

Author to whom correspondence should be addressed.

Buildings 2024, 14(10), 3103; https://doi.org/10.3390/buildings14103103

Submission received: 9 September 2024 / Revised: 17 September 2024 / Accepted: 24 September 2024 / Published: 27 September 2024

(This article belongs to the Collection Advanced Concrete Materials in Construction)

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Abstract

In this study, we conducted a single-factor experiment where fine aggregates in each mixture were replaced with coal-fired slag at replacement rates in the range of 0–100%. We investigated the effect of slag substitution rate on the cubic compressive strength, splitting tensile strength, axial compressive strength, and static modulus of elasticity of slag concrete. Based on the experimental data, the stress–strain curve of the coal-fired slag concrete was divided into four phases: elastic, elasto-plastic, peak, and decline phases. A stress–strain constitutive equation was established to describe the coal-fired slag concrete. A replacement rate of 50% of the formulated coal-fired slag concrete meets the strength requirements of C60 structural applications, and the cubic compressive strength is the same as that of ordinary concrete. Coal-fired slag can be utilized in large quantities, improving the economic value of coal-fired slag and expanding the scope of application of slag concrete.

Keywords: coal-fired slag; mechanical properties; stress–strain curve; constitutive equation; energy dissipative coefficient

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MDPI and ACS Style

Zhang, J.; Li, G.; Yu, D.; Lei, Y.; Zhang, Y. Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete. Buildings 2024, 14, 3103. https://doi.org/10.3390/buildings14103103

AMA Style

Zhang J, Li G, Yu D, Lei Y, Zhang Y. Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete. Buildings. 2024; 14(10):3103. https://doi.org/10.3390/buildings14103103

Chicago/Turabian Style

Zhang, Jianpeng, Gang Li, Daidong Yu, Yingdong Lei, and Yonghua Zhang. 2024. "Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete" Buildings 14, no. 10: 3103. https://doi.org/10.3390/buildings14103103

APA Style

Zhang, J., Li, G., Yu, D., Lei, Y., & Zhang, Y. (2024). Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete. Buildings, 14(10), 3103. https://doi.org/10.3390/buildings14103103

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Mechanical Properties and Stress–Strain Constitutive Relations of Coal-Fired Slag Concrete

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