Effect of Temperature Cycling on the Mechanical Properties of Fiber-Reinforced Self-Compacting Concrete

DOI

10.2991/978-94-6463-932-2_8How to use a DOI?

Keywords

temperature cycling; self-compacting concrete; fiber-reinforced concrete; mechanical properties

Abstract

The incorporation of fibers exacerbates the thermal incompatibility among different components of concrete, accelerating structural damage caused by differential thermal expansion and contraction during temperature cycling, leading to a measurable reduction in load-bearing capacity and stiffness. This study investigates the effects of temperature cycling (40℃-90℃ and 40℃-200℃) on water absorption, mass, compressive strength, splitting tensile strength, and elastic modulus of three types of materials: plain self-compacting concrete, steel fiber-reinforced SCC, and polyethylene fiber-reinforced SCC. The results indicate that temperature cycling gradually -loosens the concrete structure, and the addition of fibers aggravates crack propagation due to differences in thermal expansion coefficients, further deteriorating mechanical performance. Under 40℃-90℃ thermal cycling, the mechanical properties of concrete improved. However, under 40℃-200℃ cycling, plain SCC exhibited an initial increase followed by a decrease in compressive strength, whereas fiber-reinforced concretes showed a continuous decline, demonstrating more pronounced degradation. Steel fibers effectively enhanced splitting tensile strength and maintained superior performance under long-term thermal cycling. Polyethylene fibers softened and degraded at high temperatures, leading to sustained reductions in strength and stiffness, thereby diminishing durability.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Muyang Li
AU  - Yun Dong
AU  - Liang Zhang
PY  - 2025
DA  - 2025/12/22
TI  - Effect of Temperature Cycling on the Mechanical Properties of Fiber-Reinforced Self-Compacting Concrete
BT  - Proceedings of the 2025 2nd International Conference on Civil Engineering Structures and Concrete Materials (CESCM 2025)
PB  - Atlantis Press
SP  - 59
EP  - 70
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-932-2_8
DO  - 10.2991/978-94-6463-932-2_8
ID  - Li2025
ER  -