Action Mechanism of Sticky Rice-Paste-Modified Site Soil: A Traditional Chinese Cementitious Material,Studies in Conservation

当前位置： X-MOL 学术 › Stud. Conserv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Action Mechanism of Sticky Rice-Paste-Modified Site Soil: A Traditional Chinese Cementitious Material
Studies in Conservation ( IF 0.8 ) Pub Date : 2020-02-04 , DOI: 10.1080/00393630.2020.1722517
Qiang Qiang Pei _{1,

2,

3,

4} , Xu Dong Wang _{1,

2,

3,

4} , Qing Lin Guo _{2,

3,

4} , LinYi Zhao _{2,

3,

4,

5} , Bo Zhang _{2,

3,

4} , Zhi Peng Li ₅

Affiliation

ABSTRACT Sticky rice paste is a viscous material commonly used in traditional Chinese construction. It has the basic properties of high viscosity and viscoelasticity, good corrosion and weather resistance, and a small coefficient of expansion. Sticky rice paste is usually added to site soils to modify their basic physical and mechanical properties. This study found that gelatinized sticky rice-paste-modified site soils have clearly improved physical and mechanical properties compared to 20 and 100°C water-modified soils when 1% (wt%) sticky rice paste is added as the soil modifier. The liquid and plastic limits, and the plastic index of the soil are improved upon modification, to 27.4, 17.7, and 9.7%, respectively. The unconfined compressive strength and hydraulic conductivity were significantly increased and reduced, respectively. In addition, there was a reduction in the rate of disintegration by water, while the water resistance of the soil was improved. X-ray diffraction, Fourier transform infrared, and thermogravimetry/differential scanning calorimetry studies reveal that the improved properties arise through physical processes between the sticky rice paste and the soil. Scanning electron microscopy reveals that dispersed branched-chain sticky rice-paste molecules extensively infiltrate the surfaces of the soil particles on the nanoscale and become attached to them to form a good adhesive colloid that solidifies the soil particles after water evaporation, resulting in a compact structure.

更新日期：2020-02-04

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11