Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modeling the effect of sulphate on strength development of paste backfill and binder mixture optimization
The increasing use of paste backfill in underground mining makes it necessary to quantify the effect of sulphate on the strength development and economical performance of paste backfill. Therefore, the main objective of this study was to develop a methodological approach and a mathematical model to analyze and predict the strength development and cost of underground paste backfill containing different amounts of sulphate. This study demonstrates that the paste backfill can be defined as a "mixture system". We were able to show that a material model based on quadratic functions can be a suitable basis for the prediction of both the mechanical (uniaxial compressible strength (UCS)) and economic (binder cost) properties of paste backfill. The developed models allowed us to obtain valuable results about the relationship between the sulphate quantity and the mechanical performance of the backfill and the prediction of its strength at different curing times. This study has demonstrated that the sulphate significantly influences paste backfill strength. This influence is related to its concentration, the curing time and the amount and chemical composition of the cement.
Modeling the effect of sulphate on strength development of paste backfill and binder mixture optimization
The increasing use of paste backfill in underground mining makes it necessary to quantify the effect of sulphate on the strength development and economical performance of paste backfill. Therefore, the main objective of this study was to develop a methodological approach and a mathematical model to analyze and predict the strength development and cost of underground paste backfill containing different amounts of sulphate. This study demonstrates that the paste backfill can be defined as a "mixture system". We were able to show that a material model based on quadratic functions can be a suitable basis for the prediction of both the mechanical (uniaxial compressible strength (UCS)) and economic (binder cost) properties of paste backfill. The developed models allowed us to obtain valuable results about the relationship between the sulphate quantity and the mechanical performance of the backfill and the prediction of its strength at different curing times. This study has demonstrated that the sulphate significantly influences paste backfill strength. This influence is related to its concentration, the curing time and the amount and chemical composition of the cement.
Modeling the effect of sulphate on strength development of paste backfill and binder mixture optimization
Fall, M. (Autor:in) / Benzaazoua, M. (Autor:in)
Cement and Concrete Research ; 35 ; 301-314
2005
14 Seiten, 72 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2005
Sulphate effect on the early age strength and self-desiccation of cemented paste backfill
| Online Contents | 2016
Sulphate effect on the early age strength and self-desiccation of cemented paste backfill
| British Library Online Contents | 2016
Sulphate effect on the early age strength and self-desiccation of cemented paste backfill
| British Library Online Contents | 2016