F1离子固化剂加固试验黄土的物理力学特性变化机理

doi:10.11896/cldb.20020074

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Abstract The purpose of this paper is to research the effect of loess reinforced by soil stabilizer. A series of experiments are conducted to analyze the physico-mechanical properties and microscopic mechanism of the experimental loess reinforced by ionic soil stabilizer (F1). The experimental results indicate that the F1 stabilizer can provide strongly positive or cationic molecules, and adsorb clay mineral particles with permanent negative charge through ion exchange, so that the soil particles can be rearranged into a layered stacked structure with stronger bonding force under external load to increase the strength of soil; F1 stabilizer hinder the adsorption of clay particles to polar water molecules, reduce the water sensitivity, liquid and plastic limit, and optimum moisture content of soil, but increase the maximum dry density and unconfined compressive strength; SEM and NMR test show that, the F1 can reduce pore volume, area ratio, diameter, and connectivity. Compared with traditional reinforced materials such as lime and cement, F1 stabilizer has many unique advantages such as convenient utilization, low cost, and short curing period.

Key words： loess soil stabilizer stabilization mechanism

Published: 10 May 2021

CLC number:

TU472

Fund:National Natural Science Foundation of China (41662017, 51868038), National Key R & D Program of China (2017YFB1201204).

About author:: Jinglong Wang, master of highway & railway enginee-ring, Lanzhou Jiaotong University. His research interests include foundation engineering and treatment in loess region.
Xu Wang is a professor in the Department of Civil Engineering at Lanzhou Jiaotong University. He received his B.S., M.S. and Ph.D. degrees from Southwest Jiaotong University. He mainly engages in civil engineering teaching, scientific research and management, regional geotechnical theory and application research. He has published more than 80 academic papers in academic journals at home and abroad, edited and participated 2 textbooks and monographs, and has won 8 provincial scientific and technological progress awards and 3 scientific and technological awards from China Railway Society. He served as a member of the Editorial Committee of Subgrade Engineering, the Railway Society, the Railway Engineering Committee, the Geological and Road Foundation Professional Committee, the National Wet Trap Loess Commission and the Foundation Committee, and the National Pile Foundation Engineering Society, the Standing Institute of Rock Mechanics and Engineering in Gansu Province and the Civil and Civil Construction Society of Gansu Province.

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	WANG Jinglong
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	LIU Deren
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Cite this article:

WANG Jinglong,WANG Xu,LI Jiandong, et al. Mechanism of Experimental Loess Reinforced by F1 Ionic Soil Stabilizer in Physical and Mechanical Properties[J]. Materials Reports, 2021, 35(8): 8070-8075.

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http://www.mater-rep.com/EN/10.11896/cldb.20020074 OR http://www.mater-rep.com/EN/Y2021/V35/I8/8070

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