Experimental Study of Improved Loess High Embankment Foundation Jointly by Chemical Materials and Electric Field Treatment

• Published in: MATEC web of conferences Vol. 67; p. 6009
• Main Authors: Yin, He, Huang, Xue-feng, Zhou, Jun-peng
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01.01.2016
• Subjects: alternating electric field; Backfill; collapsibility; Compacted soils; Compression tests; Compressive strength; Electric fields; experiment; Lime soil stabilization; Loess; loess high fills; New technology; Organic chemistry; Shear strength; Shear tests; Sodium sulfate; Soil analysis; Soil compaction; Soil compressibility; Soil improvement; Soil lime; Soil properties; Soil stabilization
• ISSN: 2261-236X; 2274-7214; 2261-236X
• DOI: 10.1051/matecconf/20166706009

Electric field treatment is a kind of new technology that improves and reinforces soil. Proper amounts of lime and sodium sulfate were added to the soil as stabilizers. Compacted the mixture to meet the predetermined dry density and then imposed a certain intensity of electric field on it. After curing, unconfined compression tests, direct shear tests, high pressure compression tests and collapsibility tests were carried out. The results show that the engineering properties of the improved soils, such as its unconfined compressive strength, shear strength, compressibility, are better than that of the backfill compacted loess. Moreover, collapsibility under the different degree of compaction has been removed. The microstructure and improving mechanism of the improved soils are analyzed using scanning electron microscope (SEM), and the results can provide references for further study and engineering application.