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

SOILS AND FOUNDATIONS

SUKSUN HORPIBULSUK¹  WANCHAI KATKAN¹  AMNAT APICHATVULLOP¹ 

[1] School of Civil Engineering, Suranaree University of Technology

关键词: compaction curve;    compaction energy;    fine-grained soils;    modified Ohio's curves;    one point test;    (IGC: D3/D9);   

DOI  :  10.3208/sandf.48.115

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(21)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=AdSBd and w=AwSBw for the dry and the wet sides of optimum, respectively (where Ad, Aw, Bd and Bw are constant). The Bd and Bw values and optimum degree of saturation (ODS) are mainly dependent upon soil type irrespective of compaction energy. The Ad and Aw 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 2693.3 kJ/m3) 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.

【 授权许可】

Unknown