Swelling Patterns and relevant Hydraulic Conductivities of Na-Bentonite under Various Acidic and Alkali conditions

We investigated the effects of solution pH on swelling characteristics and relevant hydraulic conductivity of different particle sizes of Na-bentonite which have significantly high swelling capacity. The results showed that the time taken to reach the maximum swelling indexes for all pH levels range...

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Bibliographic Details
Published inKorean Journal of Soil Science and Fertilizer Vol. 40; no. 1
Main Authors Chung, D.Y. (Chungnam National University, Daejeon, Republic of Korea), E-mail: dychung@cnu.ac.kr, Yang, J.E. (Kangwon National University, Chuncheon, Republic of Korea), Oh, T.G. (Chungnam National University, Daejeon, Republic of Korea), Lee, K.S. (Chungnam National University, Daejeon, Republic of Korea)
Format Journal Article
LanguageEnglish
Published 01.02.2007
Subjects
Acid and Alkali
GONFLEMENT
HINCHAMIENTO
Hydraulic Conductivities
Na-Bentonite
SWELLING
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Summary:We investigated the effects of solution pH on swelling characteristics and relevant hydraulic conductivity of different particle sizes of Na-bentonite which have significantly high swelling capacity. The results showed that the time taken to reach the maximum swelling indexes for all pH levels ranged from 84 hours and 156 hours for pH 6.5 or above by NaOH and pH 3.5 by HCI, respectively. The maximum swelling index slightly increased with increasing particle size, while the maximum swelling indexes were less or approximately half of that of the indigenous Na-bentonite.
Bibliography:F07
2008002187
ISSN:0367-6315