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Showing 1 to 20 of 56 for “"Grout"”.
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Estimation of Grout Absorption in Fractured Rock Foundations
Made available in DSpace on 2014-12-11T18:09:58Z (GMT). No. of bitstreams: 1 7219931.pdf: 11127585 bytes, checksum: 570be27e2db9047c6396382199ed8e4b (MD5) Previous issue date: 1972
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The performance of polyurethane grout to stabilise hemic peat
… construction on peat. The polyurethane (PU) grouting as an option is similar to the cement base grouting application widely used for ground improvement. However, the PU grouting is a strong lightweight material with very short curing time. The Parit Nipah hemic peat has high natural moisture …
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Novel methods for monitoring grout penetration in hard rock
Grouting has been used in ground engineering since the early 19th century. Grouts are injected into the ground both for the creation of hydraulic barriers and for ensuring ground stability. Example applications are dam sealing, underground isolation of waste disposal sites, stabilisation of mine …
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Characterization and applications in infrastructure of steel reinforced polymer and grout composites
… reinforced polymer (SRP) and steel reinforced grout (SRG) is a promising new technology for increasing flexural, compressive, and shear capacities of infrastructure components, including reinforced concrete (RC) members and wood utility poles. The material constants for single-ply SRP and SRG …
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STATIC STRENGTH OF DOUBLE-SKIN GROUTED X-JOINT INFILLED WITH HIGH STRENGTH GROUT
… of tubular joints. Although strengthening by grouting has been considered to be efficient and cost effective, a general lack of sufficient guidance in codes and technical literature means the beneficial effects of grouting cannot readily be taken advantage of. This research effort tries to …
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Experimental evaluation of polyester grout as a ground control measure in underground mines
Chemical grouting has been used to insure the stability of underground mine openings for more than twenty years. The polyurethane grout, which is currently being used, has a limited range of mechanical properties that restrict its utilization. Polyurethane also poses serious threats to miners' …
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Rheology of grout for preplaced aggregate concrete. Investigation on the effect of different materials on the rheology of Portland cement based grouts and their role in the production of preplaced aggregate concrete.
Preplaced aggregate concrete (PAC) is produced by grouting high workability cement based grouts among the voids of compacted coarse aggregate mass. Because of its low shrinkage, PAC has been used for many repair jobs like; tunnel lines, dams and bridge piers. Moreover, it has been used for …
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Influence of sand friction angle, grout stiffness, and confinement on the behavior of acrylamide and sodium silicate grouted sand
In the geotechnical engineering field, grouting is a commonly used option within the plethora of ground improvement methods. Yet, the practice of grouting relies heavily on empirically developed models to estimate strength and predict grouted soil behavior. Collectively, these models consider many …
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Iniciação e propagação de fraturas induzidas por injeções em solos argilosos com canalículos: aplicação ao tratamento do solo residual de fundação da barragem de terra da UHE Balbina
… to treat the foundation with a soil-cement grout courtain which, by means of induced hydraulic fracturing, would permit the grout to penetrate and obstruct the intercepted canalicules, reducing the average permeability to values prescribed in the project (K ≤ 10-4 cm/s). This work presents a …
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Performance of No Vibration/No Admixture Masonry Grout Containing High Replacement of Portland Cement with Fly Ash and Ground Granulated Blast Furnace Slag
… structural designs typically require fully grouted walls. The grouting process is labor-intensive, time-consuming and has a high energy demand due to requirements of consolidation in each and subsequent grout lifts. Self-consolidating grout with admixtures has been successfully used without …
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Kinetics of microfine cement filtration during constant rate permeation through sands
Permeation grouting is a cost-effective ground improvement technique that involves the injection of grout into the voids of geological material to improve the engineering properties by reducing the permeability and/or increasing the strength. Permeation grouting can be performed with either …
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The Investigation of Transverse Joints and Grouts on Full Depth Concrete Bridge Deck Panels
… were built as hollow concrete rings filled with grout and left to shrink under ambient conditions. Thirteen combinations of different surface conditions and grouts were designed to test the bond strength between the materials. The strain profile, cracking patterns, and ponding results were …
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Three-dimensional analysis of surface settlement in soft ground tunneling
… that were varied were the face pressure and the grout pressure. Longitudinal settlement profiles were obtained for many different face pressures and several different grout pressures. Results show that the ground surrounding the tunnel is very sensitive to changes in grout pressure in terms of …
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Analysis of the structural behaviour of grouted pile/sleeve connections for offshore structures
… previously identified) affecting the strength of grouted connections. The current bond strength formula is evaluated and its limitations noted. Previous analytical work is examined and strengths and weaknesses investigated. A nonlinear finite element analysis is developed using a friction gap …
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VHPC Material Characterization and Recommendations for the Buffalo Branch Bridge Rehabilitation
… connected by a shear key filled with grout. This system is ideal for short spans with low clearance restrictions. However, due to the grout deteriorating and debonding from the precast concrete in the shear key, reflective cracking propogates through the deck allowing water and …
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Load transfer mechanism of fully grouted cable bolts.
Fully grouted cable bolts have been used in the mining industry for more than fifty years. However, failure of cable bolting systems still occurs in mine sites, as a result of insufficient load transfer between the rock mass and the cable bolt. Numerous research studies have been conducted to …
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Lap Splice Development Length of Rebar in Stabilized Hollow Interlocking Compressed Earth Blocks
… from hollow ICEB half units with one side grouting channel. ICEB units used in this research were exclusively produced from the Soeng Thai Model BP6 block press. The BP6 block press is currently manufactured in Thailand under the guidance and direction of the Center of Vocational Building …
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Long-term behaviour of twin tunnels in London clay
… Laboratory investigations are performed on grout from the London Underground tunnels, investigating permeability, porosity, microstructure and composition. A deterioration process is proposed to explain observations, consisting of acid attack and leaching. The deterioration had appeared to …
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