Stress induced time dependent behavior of clayey soils |
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| Authors: | Sudhir Kumar Tewatia Pratima Rani Bose Asuri Sridharan Sunanda Rath |
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| Institution: | (1) Central Soil and Materials Research Station, Ministry of Water Resources, Outer Ring Road Hauz Khas, New Delhi, 110016, India;(2) Department of Civil and Environmental Engineering, Delhi College of Engineering, Delhi University, Bawana Road, New Delhi, 110042, India;(3) Department of Civil Engineering, Indian Institute of Science, Bangalore, 560012, India;(4) Jagan Nath Gupta Institute of Engineering and Technology, Sitapura, Jaipur, 302022, India |
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| Abstract: | It is shown that time compression curve obtained from one-dimensional consolidation curve in the laboratory may include six
phases. These are initial compression, first primary compression, transition from first primary compression to second primary
compression, second primary compression, and transition from second primary compression to creep and lastly creep. This paper
attempts to identify the quantitative beginnings and characteristics of these phases. A mathematical characteristic of all
the soils that follow primary consolidation as per Terzaghi’s one dimensional consolidation theory is derived. It is known
as the constant of primary consolidation. It is used to study the beginning of secondary consolidation and its effects on
primary consolidation. Another characteristic of soils for creep and total absence of primary compression is derived. Methods
are suggested for the determination of coefficients of Primary and Secondary consolidations and the compression index. |
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| Keywords: | Bi-Terzaghian soils Clays Compression Index Consolidation Constant of primary consolidation Creep Instantaneous c v Pore water Secondary compression True c v |
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