Early cracking characteristics of concrete strengthened with fiber mesh

(1.College of Aeronautical Engineering, Air Force Engineering University, Xi’an 710038, China;2.College of Civil Aviation, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China;3.Naval Research Institute of the PLA Army, Beijing 100070, China;4.PLA Unit 93023, Hulunbuir 021000, China )

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    In order to solve the problem that the cement concrete of the airport pavement is easy to produce early micro cracks during the construction period and bring potential safety hazards to the aircraft operation during the service period, this study proposed a method to strengthen the surface performance of the airport pavement by laying fiber mesh in the concrete surface mortar layer. Carbon fiber, aramid fiber and basalt fiber mesh were selected as reinforcement materials to characterize the early cracking resistance of concrete with the early cracking performance of mortar. The effects of water cement ratio, cement sand ratio, fineness modulus and fiber mesh on the early cracking resistance of cement mortar in high temperature and multi wind simulation environment were studied. The results show that the early cracking resistance of cement mortar is the best when the water cement ratio is 0.43, the cement sand ratio is 0.47 and the fineness modulus is 3.4, and when the fiber mesh is basalt fiber with a grid size of 3 mm ×3 mm, the strengthening effect of early cracking resistance is the best.

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李悦媛,许巍,张俊,等.纤维网格布表层强化混凝土早期开裂特性[J].河海大学学报(自然科学版),2022,50(6):114-122.(LI Yueyuan, XU Wei, ZHANG Jun, et al. Early cracking characteristics of concrete strengthened with fiber mesh[J]. Journal of Hohai University (Natural Sciences),2022,50(6):114-122.(in Chinese))

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  • Received:October 22,2021
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  • Online: November 25,2022
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