Zobrazeno 1 - 10
of 1 650
pro vyhledávání: '"cemented paste backfill"'
Publikováno v:
International Journal of Mining Science and Technology, Vol 34, Iss 7, Pp 909-924 (2024)
During the process of constructional backfill mining, the cemented paste backfill (CPB) typically exhibits a high degree of brittleness and limited resistance to failure. In this study, the mechanical and damage evolution characteristics of waste tir
Externí odkaz:
https://doaj.org/article/4a8fc8ceaf8d4d809c1bef9b06c6ad16
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Cemented paste backfill (CPB) is a technology that has a positive impact on both the environment and mining safety. In recent years, it has been widely applied and developed. To improve the carbon sequestration efficiency of CPB, air-entraining agent
Externí odkaz:
https://doaj.org/article/1e13a8b7930b4c66a53a0c7fc66d349a
Autor:
Amirreza Saremi, Mamadou Fall
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 5952-5962 (2024)
This paper examines the influence of various factors, including the addition of nano-calcium carbonate particles (chemical processes, C) to CPBs, non-isothermal field curing temperatures (thermal factor, T), and field vertical curing stress (mechanic
Externí odkaz:
https://doaj.org/article/5cf6794fd88c41d0af36166fbbd627f3
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03784- (2024)
The backfill is the safety barrier of the backfilling stopes, and the uniaxial compressive strength (UCS) of the backfill is the key indicator to keep the stability of the backfill. To investigate the actual distribution of the UCS of the backfill in
Externí odkaz:
https://doaj.org/article/39d0a06fbe114c168cf90bcbc8e63ede
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03694- (2024)
In the field of coal mine backfilling, the method of grading the coal gangue and the effect it has on the rheological properties of the cemented paste backfill (CPB) are still to be fully understood. In this study, the CPB is composed of coal gangue
Externí odkaz:
https://doaj.org/article/a0e4c0d12e4a4ba4bf9325f77df13102
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03618- (2024)
Solid waste filling is an important development direction for filling mining. This research proposes the preparation of solid waste-based cemented paste backfill (SWCPB) to fill the underground mined area by using waste rock and copper slag as the mi
Externí odkaz:
https://doaj.org/article/d2dc77105f194835b5333aee0f405d09
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e03367- (2024)
In order to improve the mechanical properties of backfill, steel slag and straw fiber were used as materials to prepare backfill. The law of sand-cement ratio, mass concentration, steel slag content and straw fiber on strength and rheological paramet
Externí odkaz:
https://doaj.org/article/fe3a1df876ec4214a975f6cdee3e641e
Insight into the active roof-contact of cemented paste backfill: A high-efficient expansion material
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e03123- (2024)
If the cemented paste backfill (CPB) does not contact the roof, it will cause mining safety problems such as roof collapse, and the passive roof contact technology cannot effectively solve the problem. Therefore, the active roof-contact technology ba
Externí odkaz:
https://doaj.org/article/964f813eead24b29b7c5dacdf91562d3
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e03065- (2024)
The present study conducted an extensive investigation into the durability of Na2SO4-activated binary slag cementitious materials for use in cemented paste backfill (CPB) under sulfate attack conditions. The primary objectives were to assess the feas
Externí odkaz:
https://doaj.org/article/22c91eaa969144f49384d3209e12725a
Publikováno v:
Записки Горного института, Vol 265, Pp 45-54 (2024)
There is a global upsurge in the use of cemented paste backfill (CPB) for various mining functions. However, the cost of the Portland cement binder is prohibitive, thus warranting strategies to reduce cement usage without overly diminishing the CPB q
Externí odkaz:
https://doaj.org/article/ae2d00d0b699484e89f20fc2e6650a38