ISSN: 1945-7545
CODEN: GTJODJ
Published Online: 8 July 2010
Page Count: 12

Assessment of the Modified CUAPS Apparatus to Estimate In Situ Properties of Cemented Paste Backfill

Yilmaz, Erol
Dept. of Applied Sciences, Univ. du Québec en Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC

Belem, Tikou
Associate Professor, Dept. of Applied Sciences, Univ. du Québec en Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC

Benzaazoua, Mostafa
Professor and CRC Holder, Dept. of Applied Sciences, Univ. du Québec en Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC

Bussière, Bruno
Professor and CRC Holder, Dept. of Applied Sciences, Univ. du Québec en Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC

(Received 14 August 2009; accepted 1 June 2010)

Abstract

This paper evaluates some improvements in the design of a laboratory apparatus called curing under applied pressure system (CUAPS) designed to estimate in situ properties of cemented paste backfill (CPB). This apparatus is effective in conducting the following tests on samples during curing: (i) One-dimensional consolidation test with or without pore water pressure (PWP) measurement, (ii) PWP dissipation test, (iii) saturated hydraulic conductivity (permeability) test, and (iv) curing under constant or variable vertical pressure. Unconfined compression tests can be also performed on consolidated CPB samples after each of these tests. The modified CUAPS apparatus is assessed in this paper. Preliminary results are promising and validate the functionality of the CUAPS apparatus, which will contribute to the knowledge on consolidation behaviour of in situ CPB material.

Keywords:
paste backfill, CUAPS, consolidation, permeability, curing stress, compressive strength

Paper ID: GTJ102689
DOI: 10.1520/GTJ102689
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