废弃禽畜骨提取物协同纤维固砂的力学特性试验研究

doi:10.11896/cldb.25070101

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Abstract To support China’s ongoing urbanization with low-impact ground improvement, this work develops a soybean ureaseinduced calcium phosphate compounds precipitation (SICCP) technique that utilizes waste livestock and poultry bones as the calcium-phosphorus source, and incorporates basalt fibers to alleviate brittle failure in SICCP-treated soils. Solution tests elucidated the influences of urea concentration and enzyme-to-gel ratio on reaction kinetics;unconfined compressive strength tests determined optimal processing parameters;direct shear tests on standard sand assessed the effect of fiber dosage;microstructural and mineralogical analyses clarified the reinforcement mechanism. The results show that increasing urea concentration and enzyme-to-gel ratio accelerates the SICCP reaction, while the UCS of stabilized sand rise and then fall with urea concentration, and decreases monotonically with the enzyme-to-gel ratio;the optimal urea concentration and enzyme-to-gel ratio are 0.6 mol/L and 0.2, respectively. With basalt fiber addition, peak shear strength, cohesion, and internal friction angle increase with fiber content. Amorphous calcium phosphate forms coatings on sand grains, fills pores, and bridges particles, while anchoring at fiber ends and intersections;toget-her with the fibers, these precipitates establish a stable three-dimensional network that achieves a robust sand stabilization. The findings offer a pathway for high-value utilization of waste animal bones and advance an environmentally friendly soil stabilization technology.

Key words： waste livestock and poultry bones basalt fibers unconfined compressive strength shear strength sand solidification mechanism

Published: 10 September 2026 Online: 2026-09-22

CLC number:

TU441

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	Articles by authors
	GAO Yuan
	FAN Henghui
	LIU Guochong
	NI Wenbo
	REN Guanzhou
	MENG Minqiang
	PANG Shuai

Cite this article:

GAO Yuan,FAN Henghui,LIU Guochong, et al. Mechanical Properties of Sand Solidification by the Synergistic Action of Extracts from Waste Livestock and Poultry Bones and Fibers[J]. Materials Reports, 2026, 40(17): 25070101-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25070101 OR https://www.mater-rep.com/EN/Y2026/V40/I17/25070101

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