Bearing Capacity Improvement of Shallow Foundations Using Cement-Stabilized Sand

Abstract:

In order to attain a satisfactory level of safety and stability in the construction of structures on weak soil, one of the best solutions can be soil improvement. The addition of a certain percentage of some materials to the soil may compensate for its deficiency. Cement is a suitable material to be used for stabilization and modification of a wide variety of soils. By using this material, the engineering properties of soil can be improved. In this study, the effect of soil stabilization with cement on the bearing capacity of a shallow foundation was studied by employing finite element method. The material properties were obtained by conducting experimental tests on cement-stabilized sand. Cement varying from 2% to 8% by soil dry weight was added for stabilization. The effect of reinforced soil block dimensions, foundation width and cement content were investigated. From the results, it can be figured out that by stabilizing the soil below the foundation to certain dimensions with the necessary cement content, the bearing capacity of the foundation will increase to an acceptable level.

• Periodical: Key Engineering Materials (Volume 723)
• Pages: 795-800
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.723.795
• Online since: December 2016
• Authors: Habib Rasouli, Hana Takhtfirouzeh, Abbasali Taghavi Ghalesari*, Roya Hemati
• Keywords: Bearing Capacity, Cement Stabilization, Finite Element Method (FEM), Shallow Foundation, Soil-Structure Interaction

References

[1] G. W. Clough, N. Sitar, R. C. Bachus, N. S. Rad, Cemented sands under static loading. J. Geotech. Eng. Div. ASCE. 107 (1981) 799-817.

DOI: 10.1061/ajgeb6.0001152

[2] G. A. Miller, S. Azad, Influence of soil type on stabilization with cement kiln dust. Constr. Build. Mater. 14 (2000) 89-97.

DOI: 10.1016/s0950-0618(00)00007-6

[3] A. H. M. Kamruzzaman, Physico-chemical and engineering behavior of cement treated Singapore marine clay, Ph. D Thesis, National University of Singapore, (2003).

[4] N. C. Consoli, M. A. Vendruscolo, P. P. M. Prietto, Plate load tests on soil layers improved with cement and fiber. J. Geotech. Geoenviron. Eng. 129 (1) (2003) 96-101.

DOI: 10.1061/(asce)1090-0241(2003)129:1(96)

[5] S. Horpibulsuk, N. Miura, T.S. Nagaraj. Assessment of strength development in cement-admixed high water content clays with Abrams' Law as a basis. Geotech. 53(4) (2003) 439-444.

DOI: 10.1680/geot.2003.53.4.439

[6] N. C. Consoli, R. C. Cruz, M. F. Floss, L. Festugato. Parameters controlling tensile and compressive strength of artificially cemented sand, J. Geotech. Geoenviron. Eng. 136(5) (2010) 759-763.

DOI: 10.1061/(asce)gt.1943-5606.0000278

[7] G. Stefanoff, J. Jellev, N. Tsankova, P. Karachoron, P. Slavov. Stress and strain state of a cement-less cushion. In Proc: 7th European Conf. Soil Mech. Found Eng. Helsinki. (1983) 811–816.

[8] N. F. Ismael, Loading tests on circular and ring plates in very dense cemented sands. J. Geotech. Eng. ASCE. 122(4) (1996) 281-287.

DOI: 10.1061/(asce)0733-9410(1996)122:4(281)

[9] A. Thome, M. Donato, N. C. Consoli, J. Graham. Circular footing on a cemented layer above weak foundation soil. Can. Geotech. J. 42 (2005) 1569-1584.

DOI: 10.1139/t05-069

[10] A. Taghavi Ghalesari, A. Barari, P. Fardad Amini, L. B. Ibsen. Development of optimum design from static response of pile-raft interaction, J. Marine Sci. Tech. 20(2) (2015) 331-343.

DOI: 10.1007/s00773-014-0286-x

[11] K. Terzaghi, Theoretical soil mechanics, New York: John Wiley and Sons, (1943).