Effects of Aqua-Dispersing Nano-Binder on Clay Conductivity at Different Temperatures

Cuiying Zhou, Xingxing Ge, Wei Huang, Dexian Li and Zhen Liu
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Cuiying Zhou: School of Civil Engineering, Sun Yat-sen University, 135 XinGangXiLu, Guangzhou 510275, China
Xingxing Ge: School of Civil Engineering, Sun Yat-sen University, 135 XinGangXiLu, Guangzhou 510275, China
Wei Huang: School of Civil Engineering, Sun Yat-sen University, 135 XinGangXiLu, Guangzhou 510275, China
Dexian Li: School of Civil Engineering, Sun Yat-sen University, 135 XinGangXiLu, Guangzhou 510275, China
Zhen Liu: School of Civil Engineering, Sun Yat-sen University, 135 XinGangXiLu, Guangzhou 510275, China

Sustainability, 2019, vol. 11, issue 18, 1-13

Abstract: Soil nutrients are the basis of ecological remediation. Soil amendments can form a reticular membrane structure on the soil surface to increase nutrient storage and alleviate nutrient imbalances, and are affected by the environmental temperature. At present, the qualitative evaluation of the effect of soil amendment is mainly based on vegetative growth. However, with the increasing use of soil amendments, how to conveniently and quantitatively evaluate the impact of soil amendments on ecological restoration under different temperature conditions from the perspective of soil urgently needs to be solved. Therefore, a new soil amendment named aqua-dispersing nano-binder (ADNB) and silty clay that is commonly used for ecological restoration in South China were used as research subjects, and the important soil nutrient storage capacity—soil conductivity index—was used as the starting point to find solutions to the above problems. We independently developed a multifunctional instrument to measure the soil amendment concentration. Clay conductivity measurements were used by adding different concentrations of ADNB within the range of 0 to 50 °C, and the mechanism by which temperature and ADNB affect the conductivity of clay was revealed. In addition, the quantitative relationship between the clay conductivity, ambient temperature and concentration of ADNB was elucidated. According to the growth conditions of melinis minutiflora and pigeon pea under different concentrations of ADNB, the optimal ADNB concentration needed to improve ecological restoration was obtained, which provided a new way to evaluate the effects of the large-scale use of soil modifiers on ecological restoration.

Keywords: temperature; aqua-dispersing nano-binder; clay; soil amendment; optimal concentration (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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