AN APPROACH FOR ASSESSMENT OF COMPACTION CURVES OF FINE GRAINED SOILS AT VARIOUS ENERGIES USING A ONE POINT TEST

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概要

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• Compaction curves of soils are essential for establishing practical and reliable criteria for an effective control of field compaction. This paper deals with the development of a practical method of assessing laboratory compaction curves of fine-grained soils. It is found that for a given fine-grained soil compacted at a particular compaction energy, the relationships between water content (w) and degree of saturation (S) are represented by power function, which are w=A_dS^<B_d> and w=A_wS^<B_w> for the dry and the wet sides of optimum, respectively (where A_d, A_w, B_d and B_w are constant). The B_d and B_w values and optimum degree of saturation (ODS) are mainly dependent upon soil type irrespective of compaction energy. The A_d and A_w values decrease with the logarithm of compaction energy and the decrease rates are practically the same for any compacted fine-grained soil. This leads to a simple and rational method to assess the compaction curve wherein the compaction energy varies over a wide range using a one point test (a single test). Assuming that fine-grained soils compacted under standard Proctor energy behave in agreement with Ohio's curves, the modified Ohio's curves for the other three compaction energy levels (296.3, 1346.6 and 2693.3kJ/m^3) are developed based on the proposed method. These curves can be used to assess the entire compaction curves at the required compaction energy based on a single set data of dry unit weight and water content.

• 社団法人地盤工学会の論文

著者

• Horpibulsuk Suksun

  School Of Civil Engineering Suranaree University Of Technology

• KATKAN WANCHAI

  School of Civil Engineering, Suranaree University of Technology

• APICHATVULLOP AMNAT

  School of Civil Engineering, Suranaree University of Technology

• Apichatvullop Amnat

  School Of Civil Engineering Suranaree University Of Technology

• Katkan Wanchai

  School Of Civil Engineering Suranaree University Of Technology

関連論文

• A CASE HISTORY ON UNDERPINNING FOR A DISTRESSED BUILDING ON HARD RESIDUAL SOIL UNDERNEATH NON-UNIFORM LOOSE SAND
• AN APPROACH FOR ASSESSMENT OF COMPACTION CURVES OF FINE GRAINED SOILS AT VARIOUS ENERGIES USING A ONE POINT TEST
• STRENGTH DEVELOPMENT IN CEMENT STABILIZED LOW PLASTICITY AND COARSE GRAINED SOILS : LABORATORY AND FIELD STUDY
• ROLE OF FLY ASH ON STRENGTH AND MICROSTRUCTURE DEVELOPMENT IN BLENDED CEMENT STABILIZED SILTY CLAY

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