轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (1): 68-75.

所属专题：水泥混凝土

轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能

李方贤¹, 李建新², 肖民¹, 任蒙蒙¹

1.华南理工大学材料科学与工程学院,广州 510640;
2.广州航海学院土木与工程管理学院,广州 510725

收稿日期:2021-08-27 修订日期:2021-10-29 出版日期:2022-01-15 发布日期:2022-02-10
通信作者: 李建新,博士,教授。E-mail:jianxinl@126.com
作者简介:李方贤(1979—),男,博士,副研究员。主要从事先进水泥基材料的研究。E-mail:msfxli@scut.edu.cn
基金资助:
国家重点研发计划(2018YFD1101004-02)

Impact Resistance of Lightweight Steel-Framed Foamed Concrete Composite Wall Panels

LI Fangxian¹, LI Jianxin², XIAO Min¹, REN Mengmeng¹

1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;
2. School of Civil and Engineering Management, Guangzhou Maritime University, Guangzhou 510725, China

Received:2021-08-27 Revised:2021-10-29 Online:2022-01-15 Published:2022-02-10

摘要/Abstract

摘要： 为了对轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能进行定量表征和破坏形式进行定性描述,评价复合墙板抗冲击性能的优劣,利用质量为2 040 g的钢球分别从1.0 m、1.5 m、2.0 m和2.5 m的高度自由落体冲击复合墙板,同时辅以全幅高达2 000帧/s的超高速相机拍摄试验过程,研究了不同结构的轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能。结果表明,采用钢丝网、纤维、玻璃纤维网格布三种增强方式可以提升轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能,三种复合墙板分别在冲击高度为2.0 m、2.0 m和2.5 m时出现裂缝,吸能比例的最大值分别为97.80%、96.70%和96.57%,玻璃纤维网格布增强方式的轻钢龙骨-泡沫混凝土复合墙板具有更好的抗冲击性能;轻钢龙骨-泡沫混凝土复合墙板表面不同位置处抗冲击性能具有差异性,非龙骨区域的吸能比例和硅酸钙板吸收能量小于龙骨区域,具有更好的抗冲击性能。

关键词: 轻钢龙骨-泡沫混凝土, 复合墙板, 抗冲击性能, 冲击高度, 硅酸钙板, 吸能比例

Abstract: The impact resistance and failure modes were assessed by impacting composite wall panels with a 2 040 g steel ball from heights of 1.0 m, 1.5 m, 2.0 m and 2.5 m, respectively. While the test was being conducted, an ultra-high-speed camera recording 2 000 frames per second was used to provide footage. The impact resistance of lightweight steel-framed foamed concrete composite wall panels of different structures was evaluated. The results show that reinforcement methods such as steel wire mesh, fiber and fiberglass mesh enhance the impact resistance of lightweight steel-framed foamed concrete composite wall panels. The cracks appear in the three of composite wall panels when the impact height is 2.0 m, 2.0 m and 2.5 m, and the energy absorption ratio is 97.80%, 96.70% and 96.57%, respectively. The lightweight steel-framed foamed concrete composite wall panels reinforced with fiberglass mesh provide better impact resistance. The lightweight steel-framed foamed concrete composite wall panels exhibit different levels of impact resistance according to their position on the surface. Compared to lightweight steel-framed area, the non-lightweight steel-framed area and the calcium silicate board have lower energy absorption ratios, which have better impact resistance.

Key words: lightweight steel-framed foamed concrete, composite wall panel, impact resistance, impact height, calcium silicate board, energy absorption ratio

中图分类号:

TU528.31

李方贤, 李建新, 肖民, 任蒙蒙. 轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能[J]. 硅酸盐通报, 2022, 41(1): 68-75.

LI Fangxian, LI Jianxin, XIAO Min, REN Mengmeng. Impact Resistance of Lightweight Steel-Framed Foamed Concrete Composite Wall Panels[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(1): 68-75.

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轻钢龙骨-泡沫混凝土复合墙板的抗冲击性能

Impact Resistance of Lightweight Steel-Framed Foamed Concrete Composite Wall Panels

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