Resourceful Utilization of Cow Hair in the Preparation of Iron Tailing-Based Foam Concrete

被引:8
作者
Liu, Leipeng [1 ]
Yang, Junjie [1 ]
She, Yinfei [1 ]
Lv, Shenghua [1 ]
Yang, Zheng [1 ]
Zhang, Jia [2 ]
机构
[1] Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China
[2] Weinan Normal Univ, Coll Chem & Mat Sci, Weinan 714099, Peoples R China
基金
中国国家自然科学基金;
关键词
cow hair; foam concrete; mechanical performance; stomatal structure; chemical foaming; DURABILITY PROPERTIES; STEEL FIBERS; WASTE; REINFORCEMENT; PERFORMANCE; BEHAVIOR; COMPOSITES; STRENGTH;
D O I
10.3390/ma15165739
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Cow hair, a by-product of tannery waste, is usually stockpiled on a large scale as waste, which leads to serious environmental impacts. In this paper, cow hair was used as a reinforcement fiber to improve the mechanical strength of iron tailing-based foam concrete. The effects of the amount of cow hair fiber on the apparent density, compressive strength, and flexural strength of foam concrete were investigated by a series of characterization methods. Meanwhile, Image-Pro Plus software was used to analyze the porosity, average pore size, roundness, and other parameters of the specimens with different amounts of cow hair fiber. Results revealed that a proper amount of cow hair fiber can form a stable three-dimensional network structure inside the foam concrete and promote a uniform distribution and size of the pore structure inside the test piece. This could effectively improve the compressive strength, flexural strength, and crack resistance of the foam concrete, and when the fiber content was 0.2 wt%, the foam concrete exhibited the best mechanical properties, with a compressive strength of 11.19 MPa and a flexural strength of 3.58 MPa. The present work was in agreement with the strategic objective of resource recycling and solid waste utilization, which was conducive to the development of the circular and green economy.
引用
收藏
页数:15
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