Development of a trench cutting re-mixing deep wall method model test device [PDF]
, 2020 The trench cutting re-mixing deep wall (TRD) is a new type of underground waterproof curtain. Mixing uniformity is the key index affecting the efficiency and quality of this method.
Bezuijen, Adam +5 more
core +2 more sources
Ultrasonic sound speed analysis of hydrating calcium sulphate hemihydrate \ud [PDF]
, 2011 This article focuses on the hydration, and\ud associated microstructure development, of b-hemihydrate\ud to dihydrate (gypsum). The sound velocity is used to\ud quantify the composition of the fresh slurry as well as the\ud hardening and hardened—porous ...
Brouwers, H.J.H., Korte, A.C.J. de
core +9 more sources
Reduction of Fractionation of Lightweight Slurry to Geothermal Boreholes
Energies, 2021 When designing the cement slurry for casing string cementing in geothermal boreholes, the appropriate thermal conductivity is selected. In the zone of geothermal water, where thermal energy is collected, cement slurry is used, from which the cement ...
Marcin Kremieniewski +3 more
doaj +1 more source
Possibilities of Limiting Migration of Natural Gas in Boreholes in the Context of Laboratory Studies
Energies, 2021 Gas migration through fresh and hardened cement slurry is an ongoing problem in the oil industry. In order to eliminate this unfavourable phenomenon, research is being conducted on new compositions of slurries for gas wells.
Marcin Kremieniewski +3 more
doaj +1 more source
Energy-Efficient Low-Complexity Algorithm in 5G Massive MIMO Systems [PDF]
, 2021 Energy efficiency (EE) is a critical design when taking into account circuit power consumption (CPC) in fifth-generation cellular networks. These problems arise because of the increasing number of antennas in massive multiple-input multiple-output ...
A. Hamzah, Shipun +6 more
core +1 more source
Grouting mechanism and experimental study of goaf considering filtration effect.
PLoS ONE, 2023 The filtration effect significantly affects the gangue slurry velocity and concentration, making it difficult to evaluate the gangue slurry diffusion range.
Lei Zhu +3 more
doaj +1 more source
Frontiers in Materials, 2022 Under conditions of heavy oil thermal recovery, cement sheaths often suffer high-temperature performance degradation and CO2 corrosion. The performance of Class G oil well cement commonly used for cementing, deteriorates significantly at high ...
Guangai Wu +4 more
doaj +1 more source
Assessment of mortar evolution in pig slurry by mechanical and ultrasonic measurements [PDF]
, 2010 This work presents the results obtained in a long-term experiment focused on the study of the evolution of cementitious materials immersed in pig slurry at real conditions.
González Hernández, Margarita +3 more
core +2 more sources
Numerical Simulation of the Diffusion of Fissure Slurry at High Temperature
Geofluids, 2022 Deep-buried tunnel at high-ground temperature is prone to the sudden surge of water when crossing the water-rich formation, resulting in casualties and economic losses.
Jiandong Niu +7 more
doaj +1 more source
Mechanical performance of glass-based geopolymer matrix composites reinforced with cellulose fibers [PDF]
, 2018 Glass-based geopolymers, incorporating fly ash and borosilicate glass, were processed in conditions of high alkalinity (NaOH 10-13 M). Different formulations (fly ash and borosilicate in mixtures of 70-30 wt% and 30-70 wt%, respectively) and physical ...
Bernardo, Enrico +2 more
core +2 more sources