ISSN: 1945-7553
Published Online: 30 August 2006
Page Count: 7

Accelerated Diffusion Test on the Intact Rock Mass

Hanumantha Rao, B
Post Graduate Student, Research Scholar, and Professor, Indian Institute of,

Dalinaidu, A
Post Graduate Student, Research Scholar, and Professor, Indian Institute of,

Singh, DN
Post Graduate Student, Research Scholar, and Professor, Indian Institute of,

(Received 27 May 2005; accepted 19 June 2006)

Abstract

Contaminant transport through intact rock mass is predominantly diffusive and its modeling using the conventional laboratory tests is extremely time consuming. In addition, maintaining constant ambient conditions over a long duration is difficult and practically impossible. This necessitates modification of the conventional laboratory diffusion experiments so that the diffusion of ions through the intact rock mass is accelerated. To achieve this, researchers have employed an electric field across the samples of concrete and clays. However, the influence of the applied electric field on diffusion characteristics of the intact rock mass has not been studied in detail. With this in view, diffusion tests were conducted on the samples of chalk and sandstone by applying electric fields of different strength. Details of the testing methodology are presented in this paper. Efforts were also made to study the influence of the applied electric field on diffusion characteristics of these rocks.

Keywords:
contaminant transport, diffusion, accelerated tests, intact rock mass, electric field

Paper ID: JTE100184
DOI: 10.1520/JTE100184
ASTM International is a member of CrossRef.