Strength and Deformation Characteristics of Stabilized Silty Soil

Abstract:

Combined with the silty soil characteristics of the Yellow River alluvial plain and the subgrade filling of Ji-He expressway, the paper discusses silty soil, stabilized silty soil strength and stress-stain characteristics through the indoor triaxial shear test. The results show that the remodeling silty soil has obvious peak, brittle failure, low residual strength after being destroyed and the stress-strain curve shows a softening type in confining pressure 100kPa lower stress level. In the confining pressure 400kPa higher stress level, soil samples peak is not obvious,mainly plastic failure and the stress-strain curve is close to a hardening type. Compared to mixed with 8% lime, stabilized silty soil of mixed with 4% cement and 4% lime shows that the partial stress peak is more obvious when destroyed and the residual strength is drastically reduced and more incline to brittle failure. In different the age, compared to mixed with 8% lime, stabilized silty soil of mixed with 4% cement and 4% lime shows that internal friction angle becomes larger and cohesion improves gradually whose amplitude is much larger than internal friction angle. Therefore, a more effective way to stabilize the silty soil of the Yellow River alluvial plain is to select silty soil mixed with 4% cement and 4% lime.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 512-515
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.512
• Online since: November 2012
• Authors: Zheng Rong Zhao, Hong Xia Yang
• Keywords: Stabilized Silty Soil, Strain, Strength, Stress

References

[1] Specifications for Design of Highway Subgrades.People's Traffic Press, 2004,pp.4-5. (in Chinese).

[2] Technical Specification for Construction of Highway Subgrades (JTG F10-2006) . People's Traffic Press,2006,pp.10-15. (In Chinese).

[3] Ping Zhang ,Fawu Wang.The Shenyang University, 2000,12(2),pp.41-44. (In Chinese).

[4] Qingsen Shang , Haibo Zhu, Hongqing Du.Highway and Transportation Research, 2004.1, pp.22-25. (In Chinese).

[5] Test Methods of Soils Highway Engineering. People's Traffic Press,pp.56-138. (In Chinese).

[6] Dazhao Gao, Juyun Yuan. Soil and Soil Mechanism.People's Tansportation Press, 2003,2003,pp.128-132.(In Chinese).

[7] Guanghui Shao,Nengsen Wu.Soil Mechanism and Foundation. People's Traffic Press,2007, pp.125-128. (In Chinese).