Results 31 to 40 of about 1,267 (161)
The Scientific World Journal, 2014 Semi-flexible pavement surfacing is a composite pavement that utilizes the porous pavement structure of the flexible bituminous pavement, which is subsequently grouted with appropriate cementitious materials.
Suhana Koting +6 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source
Numerical Simulation of the Shear Behaviour of Cement Grout
Advances in Materials Science and Engineering, 2021 Cement grout is widely used in civil engineering and mining engineering. The shear behaviour of the cement grout plays an important role in determining the stability of the systems.
Jianhang Chen +3 more
doaj +1 more source
Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
wiley +1 more source
Viscosity, yield stress and compressive strength of cement-based grout modified with polymers
Results in Materials, 2019 In this study, two types of polycarboxylate (PCE) polymer (DBC-21 and VK-98) were used as additives in the cement-based grout. The water-cement ratio (w/c) was fixed to 0.6 and 1.0 at temperature of 25° Celsius and 50° Celsius.
Wael Mahmood +2 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang +5 more
wiley +1 more source
Geofluids, 2020 When grouting in a sand layer, the filtration of the layer on cement particles is an important aspect affecting the grout dispersion. However, few laboratory studies have been conducted to investigate the distribution of cement particles along the ...
Daimao Li +7 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
Frontiers in MaterialsTo reveal the strength recovery characteristics of grout-reinforced engineering rock masses, this study is based on the small coal pillar god-side entry of the Maiduo Mountain Coal Mine.
Zhang Shuai +7 more
doaj +1 more source
Experimental study on temperature characterization during cement grouting reinforcement
Case Studies in Thermal Engineering, 2023 Grouting is a common reinforcement method for underground projects. However, with the hidden nature of grouting reinforcement projects, the grouting reinforcement effect is difficult to detect and evaluate, and the accuracy of existing testing ...
Hai-feng Lu +3 more
doaj +1 more source