A narrow wall system to capture temperature stress-strain behavior in paste backfill

Placing mine tailings back into underground mined-out stopes is becoming increasingly used internationally because it improves ore recovery, reduces dilution of valuable ore, and increases environmental benefits due to the reduced size of the storage facilities of surface tailings. In recent years,...

Full description

Bibliographic Details
Main Authors:	Ting, Wee Kiet, Hassan, A., Sahdi, F., Taib, S. N. L., Sutan, N. M., Badhrulhisham, Abdul Aziz, Fourie, Andy
Format:	Article
Language:	English
Published:	ASTM International 2020
Subjects:	TD Environmental technology. Sanitary engineering TN Mining engineering. Metallurgy
Online Access:	http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/1/A%20narrow%20wall%20system%20to%20capture%20temperature%20stress%E2%80%93strain.pdf

id	ump-24988
recordtype	eprints
spelling	ump-249882019-11-28T07:45:50Z http://umpir.ump.edu.my/id/eprint/24988/ A narrow wall system to capture temperature stress-strain behavior in paste backfill Ting, Wee Kiet Hassan, A. Sahdi, F. Taib, S. N. L. Sutan, N. M. Badhrulhisham, Abdul Aziz Fourie, Andy TD Environmental technology. Sanitary engineering TN Mining engineering. Metallurgy Placing mine tailings back into underground mined-out stopes is becoming increasingly used internationally because it improves ore recovery, reduces dilution of valuable ore, and increases environmental benefits due to the reduced size of the storage facilities of surface tailings. In recent years, a number of stopes backfilled with cemented paste backfill have been instrumented with load cells and piezometers to improve our understanding of in situ behavior. Many of these studies have reported results that show increases in measured total stresses when there is no increase in applied load, i.e., even when the backfilling process has been long completed. One explanation is that these stress increases result from expansive volume changes of the backfill as it hydrates and generates heat. This article proposes and describes a novel laboratory apparatus called a narrow wall system to investigate this hypothesis, focusing on modeling narrow stopes as these are relatively common in backfill applications. Results from the experiments agree qualitatively with the reported field observations, showing clear increases in measured pressure during periods of temperature increase. The article concludes that the proposed narrow wall system works effectively and has been able to capture the temperature stress–strain behavior of paste backfill. Thus, the temperature effect hypothesis has now been supported by evidence. Using the system, further studies related to geometrical or scale effects are suggested. The results are important for academics and engineers to improve backfill design in mining operations. ASTM International 2020 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24988/1/A%20narrow%20wall%20system%20to%20capture%20temperature%20stress%E2%80%93strain.pdf Ting, Wee Kiet and Hassan, A. and Sahdi, F. and Taib, S. N. L. and Sutan, N. M. and Badhrulhisham, Abdul Aziz and Fourie, Andy (2020) A narrow wall system to capture temperature stress-strain behavior in paste backfill. Geotechnical Testing Journal, 43 (2). pp. 1-15. ISSN 0149-6115 https://doi.org/10.1520/GTJ20170383 https://doi.org/10.1520/GTJ20170383
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TD Environmental technology. Sanitary engineering TN Mining engineering. Metallurgy
spellingShingle	TD Environmental technology. Sanitary engineering TN Mining engineering. Metallurgy Ting, Wee Kiet Hassan, A. Sahdi, F. Taib, S. N. L. Sutan, N. M. Badhrulhisham, Abdul Aziz Fourie, Andy A narrow wall system to capture temperature stress-strain behavior in paste backfill
description	Placing mine tailings back into underground mined-out stopes is becoming increasingly used internationally because it improves ore recovery, reduces dilution of valuable ore, and increases environmental benefits due to the reduced size of the storage facilities of surface tailings. In recent years, a number of stopes backfilled with cemented paste backfill have been instrumented with load cells and piezometers to improve our understanding of in situ behavior. Many of these studies have reported results that show increases in measured total stresses when there is no increase in applied load, i.e., even when the backfilling process has been long completed. One explanation is that these stress increases result from expansive volume changes of the backfill as it hydrates and generates heat. This article proposes and describes a novel laboratory apparatus called a narrow wall system to investigate this hypothesis, focusing on modeling narrow stopes as these are relatively common in backfill applications. Results from the experiments agree qualitatively with the reported field observations, showing clear increases in measured pressure during periods of temperature increase. The article concludes that the proposed narrow wall system works effectively and has been able to capture the temperature stress–strain behavior of paste backfill. Thus, the temperature effect hypothesis has now been supported by evidence. Using the system, further studies related to geometrical or scale effects are suggested. The results are important for academics and engineers to improve backfill design in mining operations.
format	Article
author	Ting, Wee Kiet Hassan, A. Sahdi, F. Taib, S. N. L. Sutan, N. M. Badhrulhisham, Abdul Aziz Fourie, Andy
author_facet	Ting, Wee Kiet Hassan, A. Sahdi, F. Taib, S. N. L. Sutan, N. M. Badhrulhisham, Abdul Aziz Fourie, Andy
author_sort	Ting, Wee Kiet
title	A narrow wall system to capture temperature stress-strain behavior in paste backfill
title_short	A narrow wall system to capture temperature stress-strain behavior in paste backfill
title_full	A narrow wall system to capture temperature stress-strain behavior in paste backfill
title_fullStr	A narrow wall system to capture temperature stress-strain behavior in paste backfill
title_full_unstemmed	A narrow wall system to capture temperature stress-strain behavior in paste backfill
title_sort	narrow wall system to capture temperature stress-strain behavior in paste backfill
publisher	ASTM International
publishDate	2020
url	http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/ http://umpir.ump.edu.my/id/eprint/24988/1/A%20narrow%20wall%20system%20to%20capture%20temperature%20stress%E2%80%93strain.pdf
first_indexed	2023-09-18T22:38:08Z
last_indexed	2023-09-18T22:38:08Z
_version_	1777416733295902720

A narrow wall system to capture temperature stress-strain behavior in paste backfill

Similar Items