Experimental study on electro-osmosis grouting reinforcement of scaling off earthen sites

被引：0

作者：

Cui K. ^{[1
,2
]}

Cheng F. ^{[1
]}

Chen W. ^{[2
]}

Ma Q. ^{[1
]}

Xu P. ^{[1
]}

机构：

[1] Gansu Key Laboratory of Civil Engineering Disaster Prevention and Reduction, Lanzhou University of Technology, Lanzhou

[2] Key Laboratory of Western Disaster and Environmental Mechanics of Ministry of Education, Lanzhou University, Lanzhou

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2021年 / 40卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Electro-osmosis grouting; Layout style of electrodes; Scaling off; Soil mechanics; Strengthening solution;

D O I：

10.13722/j.cnki.jrme.2020.0294

中图分类号：

学科分类号：

摘要：

Scaling off is a common disease of earthen sites with dual structure characteristics in arid areas, and conventional infiltration methods are not ideal for scaling off reinforcement. Using electroosmosis as a reference, an electroosmosis equipment was developed and penetration and reinforcement tests of atmospheric dripping and electroosmosis grouting were carried out. It is found that electroosmosis grouting can uniformly penetrate the radius and expand the penetration depth. On this basis, electroosmosis grouting penetration tests with sodium silicate solution were carried out under different electrode layouts. Regular hexagon was selected as the optimal layout by analyzing the changes in current, grouting volume and energy consumption coefficient during the test. Then, the field reinforcement tests of electroosmosis grouting of three kinds of reinforcement solutions and the related property test of the reinforced soil were carried out with the optimal layout. It is shown that glutinous rice slurry and sodium silicate solution are not suitable for electroosmosis grouting reinforcement, while that, after electroosmosis grouting by SH solution, the bonding between the scaling off layers is tight, and the penetration resistance, hardness, wave speed, wind erosion resistance and disintegration resistance of the soil in the reinforced area are significantly improved compared with the unreinforced soil. © 2021, Science Press. All right reserved.

引用

页码：390 / 398

页数：8

共 20 条

[1]

SHAO M, LI L, WANG S, Et al., Deterioration mechanisms of building materials of Jiaohe ruins in China, Journal of Culture Heritage, 14, 1, pp. 38-44, (2013)

[2]

CUI Kai, CHEN Wenwu, ZHANG Jingke, Et al., Study on Mechanism of degradation and feature of ancient building materials-rammed earth in arid region, Journal of Sichuan University: Engineering Science, 44, 6, pp. 47-54, (2012)

[3]

CUI Kai, CHEN Wenwu, KUANG Jing, Et al., Effect of deterioration of earthern ruin with joint function of salinized and alternating wet and dry in arid and semi-arid regions, Journal of Central South University: Science and Technology, 43, 6, pp. 2378-2384, (2012)

[4]

CUI K, DU Y, ZHANG Y, Et al., An evaluation system for the development of scaling off at earthen sites in arid areas in NW China, Journal of Culture Heritage, 7, (2019)

[5]

ZHANG Yinghui, Study on the formation mechanism and influencing factors of binary structure features on surface of rammed soil sites in arid areas, (2018)

[6]

WANG Xudong, The conservation and consolidation of the grottoes and the earthen architecture sites in the arid region of northwestern China, (2003)

[7]

WANG Yinmei, YANG Chongcun, CHEN Wenwu, Et al., Strength characteristics and mechanism of loess solidified with new polymer material SH, Chinese Journal of Rock Mechanics and Engineering, 24, 14, pp. 2554-2559, (2005)

[8]

WANG Yinmei, HAN Wenfen, CHEN Wenwu, Research on comparison between mechanical behaviors of loess solidified with new polymer material and cement, Rock and Soil Mechanics, 25, 11, pp. 1761-1765, (2004)

[9]

CHEN Wenwu, GUO Zhiqian, XU Yanrong, Et al., Laboratory tests on rammed earth samples of earthen sites instilled by reinforcement material SH, Chinese Journal of Geotechnical Engineering, 37, 8, pp. 1517-1523, (2015)

[10]

ZHAO Haiying, WANG Xudong, LI Zuixiong, Et al., Impact of modulus and concentration of potassium silicate material on consolidation earthen architecture sites arid region, Chinese Journal of Rock Mechanics and Engineering, 25, 3, pp. 557-562, (2006)

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