Experimental study on early-strength of cemented paste backfill

A. Bascetin, S. Tuylu, H. Eker, D. Adiguzel, Y. Baktarhan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The purpose of this study is improving the strength of the cemented paste backfill. Also the effect of blast furnace slag (BFS) was investigated on short - term mechanical properties of CPB. In this study, CPB samples were prepared by 9% portland cement and also 25%, 50% and 75% of the cement were replaced with BFS. The paste materials prepared according to the value of 180 mm slump were cast into cylinder molds. The uniaxial compressive strength (UCS) and Ultrasonic P-Wave Velocities tests were performed. The maximum values of UCS 0.80, 1.70 and 3.03 MPa respectively at 3, 7 and 14 curing period were obtained from 25 wt% BFS added samples. 25%wt. BFS showed a strength of 1.79 times in the 7 days cure period and 2 times in the 14 day cure period according to the reference cemented samples. On the contrary, substitution of 50 and 75 wt.% BFS were reduced strength of CPB samples. Ultrasonic pulse velocity of cemented paste backfill showed similar trend with UCS. But, substitution of 25, 50 and 75 wt.% BFS were below the values of reference samples. The maximum values of UCS are 25% additive BFS. This situation directly affects the cost of CPB due to reduces the cement ratio.

Original languageEnglish
Title of host publication2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
PublisherSociety for Mining, Metallurgy and Exploration
ISBN (Electronic)9781510884663
Publication statusPublished - 2019
Externally publishedYes
Event2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference - Denver, United States
Duration: 24 Feb 201927 Feb 2019

Publication series

Name2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference

Conference

Conference2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
Country/TerritoryUnited States
CityDenver
Period24/02/1927/02/19

Bibliographical note

Publisher Copyright:
Copyright © 2019 by SME.

Funding

This study was funded by number FDK-2018-24707. This study was funded by Istanbul University with the project number FDK-2018-24707.

FundersFunder number
Istanbul ÜniversitesiFDK-2018-24707

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