同济大学学报（自然科学版）2024，Vol.52Issue(7)：1126-1134,9.DOI:10.11908/j.issn.0253-374x.22371
盐碱地改造用高效阻盐材料的制备及其性能研究
Preparation and Study of Properties of High-Efficiency Salt-Blocking Materials for Saline-Alkali Soil Reconstruction System
张雄 1朱国鑫 1吕欣妍1
作者信息
- 1. 同济大学 先进土木工程材料教育部重点实验室,上海 201804
- 折叠
摘要
Abstract
In order to improve saline-alkali soil,a superhydrophobic particle material with an excellent waterproof and salt-blocking performance was prepared,which was used to build a saline-alkali soil reconstruction system with a water-storage mode.Substrate material and desert sand were modified with a hydrophobic coating.The influences of resin content and micro-/nano-material content on the hydrophobicity,impermeability and breathability of the material were studied.A self-designed mini soil-column was used to simulate the migration process of underground saline water,and the waterproof and salt-blocking properties of the prepared materials were explored.The results show that when resin,hydrophobic CaCO3 and nano-SiO2 contents were 1.0%,0.8%and 0.2%,respectively,the material achieved a water contact angle of 153.6°,a water-resistant height of 230 mm,and maintained a good air permeability.The mini soil-column simulation test indicates that the material has a strong inhibition effect on the water evaporation and the upward movement of salt,with an evaporation-inhibiting rate of 50%to 70%and a salt-blocking rate of more than 99%,which maintains 97.5%after 20 test cycles.关键词
盐碱地改良/超疏水材料/隔水阻盐/蒸发抑制Key words
saline-alkali soil improvement/superhydrophobic materials/waterproof and salt-blocking/evaporation-inhibition分类
建筑与水利引用本文复制引用
张雄,朱国鑫,吕欣妍..盐碱地改造用高效阻盐材料的制备及其性能研究[J].同济大学学报（自然科学版）,2024,52(7):1126-1134,9.
