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Effect Mechanism and Simulation of Voids on Hygrothermal Performances of Composites

Zhu Liu1, Yongpeng Lei1, Xiangyang Zhang1

  • 1Key Laboratory of Advanced Ship Materials and Mechanics, College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.

Polymers
|March 10, 2022
PubMed

Keywords:
failure mechanismhygrothermal agingmicromechanicsvoid content

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Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
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