纤维特性对磷酸镁基免蒸压加气混凝土性能的影响

doi:10.11896/cldb.24050176

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Abstract Non-autoclaved aerated concrete has problems of low strength and easy cracking. In this work, magnesium phosphate cement was used as the matrix to fabricate the magnesium phosphate-based non-autoclaved aerated concrete (MPC-NAAC). The effects of length and content of polypropylene and glass fibers on the properties of MPC-NAAC were systematically investigated. The microstructure was analyzed by X-ray diffractometer and scanning electron microscope to reveal the reinforcement mechanism of the fibers. The results showed that the fibers can improve the compressive and flexural strengths of MPC-NAAC and reduce its dry density. The optimum length and content of both polypropylene and glass fibers were 9 mm and 0.10%, respectively. With this optimum length and content, the compressive and flexural strengths of polypropylene fiber-reinforced MPC-NAAC increased by 5.95% and 16.46%, respectively; and the compressive and flexural strengths of glass fiber-reinforced MPC-NAAC increased by 12.70% and 11.39%, respectively. In addition, the interaction between the fibers and the matrix was physical. A pull-out damage mechanism was exhibited for the polypropylene fiber-reinforced MPC-NAAC and a fracture damage mechanism was exhibited for the glass fibers-reinforced MPC-NAAC.

Key words： magnesium phosphate cement fiber length fiber content mechanical properties microstructure

Published: 25 May 2025 Online: 2025-05-13

CLC number:

TU528

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	Articles by authors
	CHEN Chang
	DING Xuecheng
	JIU Shaowu
	CHEN Yanxin

Cite this article:

CHEN Chang,DING Xuecheng,JIU Shaowu, et al. Effect of Fiber Performance on Properties of Magnesium Phosphate-based Non-autoclaved Aerated Concrete[J]. Materials Reports, 2025, 39(10): 24050176-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24050176 OR https://www.mater-rep.com/EN/Y2025/V39/I10/24050176

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