Compression rates of untreated and stabilized peat soils

Sing, W.L. and Hashim, Roslan and Ali, F.H. (2008) Compression rates of untreated and stabilized peat soils. Electronic Journal of Geotechnical Engineering, 13 F. ISSN 10893032

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Abstract

Characterized by high initial void ratio, organic content and water holding capacity, fibrous peat exhibits high compressibility and low shear strength. Consequently, formation of deep fibrous peat layer often poses difficulties in construction. In practice, compressibility of deep fibrous peat layer can be reduced by deep soil stabilization technique. The technique is developed in such a way that dry binders are mixed with in situ peat soil to form columnar reinforcement in the deep peat ground prior to preloading. Preloading simulations of both untreated and stabilized peats were carried out in laboratory by loading of both soils using standard oedometer consolidation apparatus. Ordinary Portland cement, ground granulated blast furnace slag and siliceous sand were used to stabilize the soil. Analysis on the time-compression curves from the tests revealed that coefficients of vertical consolidation (cv of both soils were best predicted using square root of t52.6 method when compared to those evaluated using conventional curve fitting methods. Main reason for this is the experimental time-compression curves for the method best fit its theoretical curve. In addition, the method predicts cv of soil at 52.6 average degree of consolidation, which is less likely to be affected by secondary compression that usually occurs concurrently at the later stage of soil primary consolidation.

Item Type: Article
Additional Information: Cited By (since 1996):1 Export Date: 16 December 2013 Source: Scopus Language of Original Document: English Correspondence Address: Sing, W.L.; Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia; email: wongls79@gmail.com References: Bardet, J.P., (1997) Experimental Soil Mechanics, p. 312. , Prentice-Hall, New Jersey; BS1377 1990, Methods of Testing Soils for Civil Engineering Purposes, British Standards Institution, LondonCasagrande, A., Fadum, R.E., Notes on Soil Testing for Engineering Purposes (1940) Series, 8. , Harvard University Graduate School Engineering Publication, Massachusetts; Edil, T.B., Recent Advances in Geotechnical Characterization and Construction over Peats and Organic Soils (2003) Proceedings of the 2nd International Conferences in Soft Soil Engineering and Technology, Putrajaya, Selangor Darul Ehsan, pp. 3-25. , Malaysia; Hausmann, M.R., (1990) Engineering Principles of Ground Modification, p. 254. , McGraw-Hill, New York; Head, K.H., Manual of Soil Laboratory Testing (1982) Permeability, Shear Strength and Compressibility Tests, 2, pp. 664-668. , quot; Pentech Press Limited, London; Robinson, R.G., A Study on the Beginning of Secondary Compression of Soils (2003) Journal of Testing and Evaluation, 31 (5), pp. 1-10; Taylor, D.W., (1948) Fundamentals of Soil Mechanics, pp. 406-479. , John Wiley and Sons, New York; Terzaghi, K., (1943) Theoretical Soil Mechanics, p. 510. , John Wiley and Sons, New York
Uncontrolled Keywords: Coefficient of vertical conslidation, Deep soil stabilization, Fibrous peat, Oedometer, Preloading, Blast furnaces, Cement manufacture, Cements, Compressibility, Consolidation, Data compression, Furnaces, Metal refineries, Metallurgical furnaces, Peat, Portland cement,, Reinforcement, Shear strength, Slags, Soil cement, Soil mechanics, Stability, Standards, Water content, Compression curves, Compression rates, Ground granulated blast furnace slag, In-situ, Ordinary Portland cements, Organic contents, Peat ground, Peat soils, Siliceous sand, Soil stabilization, Void ratio, Water-holding capacity, Soils, compression, computer simulation, laboratory method, oedometer test, peat soil
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 07 Jan 2014 01:28
Last Modified: 24 Jan 2019 08:50
URI: http://eprints.um.edu.my/id/eprint/8854

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