Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Bentonite in environmental and geological studies. Bentonite has many applications in environmental and geological studies due to its unique properties, including its high cation exchange capacity, high water absorption capacity, and ability to swell and form gels when hydrated.
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The presented study investigates the role of bentonite clay (BC) and its synergistic effect with silica fume (SF) as partial replacement of cement on strength, …
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Role of Bentonite in Improving the Efficiency of Cement Grouting in Coarse Sand T. G. Santhoshkumar 1, B. M. Abraham 2, A. Sridharan 3, and B. T. Jose 4 1 Principal, JBCMET, JB Campus, Kochi ...
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The powder metallurgy (P/M) components have been extensively used in industrial applications and P/M components properties has been influenced by alloying elements and porosity.
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The buffer/backfill material of bentonite acts the most important role for the safety of high-level nuclear wasterepository. ... In order to make the study of bentonite/concrete interaction more ...
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Conclusion. Bentonite, with its unique properties and versatile applications, is a valuable material in the construction industry. From soil stabilization and foundation works to drilling fluids and waterproofing, bentonite plays a crucial role in enhancing the stability, durability, and performance of construction projects.
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Bentonite is valued in foundry sand binding, drilling mud, iron ore pelletisation and as a waterproofing and sealing agent in civil …
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Also mixing bentonite in concrete, improve concrete bleeding and cohesiveness of concrete in low-intensity level . Table 3. Effect of bentonite on some of the mechanical properties and durability recorded by different researchers. ... However using of OPC may lack all those important roles of SCMs, ...
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Considex the addition of clay to concrete. A typical bentonite has a surface area of 20.000 sq cm, gm. compared to cement MATERIALS IN ENGINEERING APPLICATIONS, Vol. 1, December 1979 339 which has 3,000 sq. cm./gm. Only some 3% bentonite is enough to treble the total particle surface area, resulting in a reduc- tion in …
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The buffer/backfill material of bentonite acts the most important role for the safety of high-level nuclear waste repository. After the closure of repository, the concrete as another barrier in geological repositories will degrade and release alkaline components into the site water, which has significant impact on the compositions of bentonite and …
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Effect of Bentonite as Partial Replacement of Cement on Residual Properties of Concrete Exposed to Elevated Temperatures. by. Sardar Farhan Mushtaq. 1, Ather Ali. 1, Rao Arsalan Khushnood. 1, …
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The main technologies will be described and their role in the formulation of modern advanced concrete will be highlighted. Finally, an outlook on potential developments in the future (e.g. improved curing agents, admixtures which enhance the ductility of concrete) will be provided.
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The role of bentonite in the stabilisation of the component A and its effect on reducing the bleeding were plainly confirmed even if, the effect of the activation time cannot be neglected. ... This uncertainty is due to the unicity of each construction site, in fact, its peculiarities (concrete, water, chemicals, machine equipment, batching ...
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concrete were stated to play a signicant role. e deposition and degradation of clay minerals were also observed on the concrete bentonite interface. e reaction transport from the bentonite to the ...
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The buffer/backfill material of bentonite acts the most important role for the safety of high-level nuclear waste repository. After the closure of repository, the concrete as another barrier in geological repositories will degrade and release alkaline components into the site water, which has significant impact on the compositions of bentonite ...
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The hyperalkaline pore waters emanating from concrete will react with the bentonite barrier transforming its initial properties ( and Berger, 1998, ... Although the present results do not focus to resolve what the role of the accessory mineral in the alteration of bentonite and formation of secondary minerals is, the initial composition of ...
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Bentonite can be considered as a cheap and effective admixture for cement grouts with regard to stability. This paper presents the results of experimental studies conducted in...
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bentonite. The concrete cylinders were used to the hydrochloride acid attack test after 28 days of curing. All the concrete specimens were kept in a curing cabinet and cured at a laboratory ambient temperature of 21 ± 1 ° C and 95% relative humidity until testing. The mixes were abbreviated in one way, LXBX. ...
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The concrete mortar containing 20% bentonite shows more compressive strength than control concrete mortar . 30% bentonite-concrete blends show higher protection from MgSO 4 and Na 2 SO 4 . Reddy et al. [ 25 ] revealed that 20% bentonite-concrete blend showed ideal compressive strength following 3, 7, and 28 days relieving …
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Lower strengths were observed in Indian calcium bentonite concrete mixes, at the ages 3days, 7 days as well as 28 days of curing. ... The Role of Superplasticizers in The Development of ...
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Bentonite, clay formed by the alteration of minute glass particles derived from volcanic ash. It was named for Fort Benton, Mont., near which it was discovered. The formation of bentonite involves the alteration of volcanic glass to clay minerals; this requires hydration (taking up or combination
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Keywords: bentonite, concrete, reactivity, waste disposal. Resumen ... atures will play a significant role in the system (due to radioactive decay), and can modify the rates of reaction
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Formation of C-A-S-H phases from the interaction between concrete or cement and bentonite - Volume 51 Issue 2. 22 August 2024: Due to technical disruption, we are experiencing some delays to publication. We are working to restore services and apologise for the inconvenience. ... (2006) The role of Al in C-S-H: NMR, XRD, and …
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For finding the interface frictional resistance, several laboratory tests like model pile tested in a triaxial cell, direct shear tests (concrete on sand or sand on concrete), model pile in centrifuge, etc., can be adopted [8, 9].But direct shear and simple shear tests are more practical than large-scale tests and considered optimal for detailed …
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Durability displays crucial role in when concrete is . exposed to extrem e conditions ... Lower strengths were observed in Indian calcium bentonite concrete mixes, at the ages 3days, 7 days as ...
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The role of bentonites in the process of refining and the catalytic cracking of petroleum is well known [12,13,14]. However, one of the most widespread uses is in the drilling of wells during prospecting and the exploration of metallic, non-metallic and gas–petroleum deposits; In these operations, bentonites play a very important role in the ...
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The presented study investigates the role of bentonite clay (BC) and its synergistic effect with silica fume (SF) as partial replacement of cement on strength, durability, and microstructure of ...
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Expansive minerals (MgO, bentonite, and quicklime) improved the self-healing of PC. ... Unhydrated expansive minerals in the PC blend play vital role in the healing process. ... Portland cement (PC) concrete is an efficient, quasi-brittle, and heterogeneous material, which can withstand high compressive strength. Yet, concrete …
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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