Field Test on Soybean-Urease Induced Calcite Precipitation (SICP) for Desert Sand Stabilization against the Wind-Induced Erosion

Yaqing Gao (), Chen Hua and Tong Ke
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Yaqing Gao: Department of Regional and Urban Planning, Zhejiang University, No. 866, Yuhangtang Road, Hangzhou 310030, China
Chen Hua: Department of Regional and Urban Planning, Zhejiang University, No. 866, Yuhangtang Road, Hangzhou 310030, China
Tong Ke: Department of Regional and Urban Planning, Zhejiang University, No. 866, Yuhangtang Road, Hangzhou 310030, China

Sustainability, 2022, vol. 14, issue 22, 1-11

Abstract: Soybean-urease induced calcite precipitation (SICP) is an effective method for the improvement of sand, which forms a biocemented layer on the desert sand surface to resist erosion induced by the wind. Under this study, field tests were carried out to determine how the SICP approach may enhance the resistance of the desert to wind-induced erosion and the durability of SICP treatment in southeastern margin of Tengger Desert, Ningxia Hui Autonomous Region, China. The experimental results demonstrated that the erosion resistance of desert sand was significantly enhanced due to the SICP treatment, and the improvement effect was enhanced with the increase of the biocement solution concentration and dosage and the number of treatment cycles. Furthermore, it was also found that the resistance of SICP-treated sand to erosion induced by the wind reduced as the development of time reduced. Based on the test results in this paper, larger biocement solution concentration and dosage and multiple treatment cycles are proposed in the areas where severe wind-induced erosion takes place in order to improve the ductility of SICP treatment.

Keywords: wind-induced erosion resistance; filed test; soybean-urease induced calcite precipitation; desert sand; durability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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