Results 91 to 100 of about 608,534 (199)
Gel Stability of Calcium Bentonite Suspension in Brine and Its Application in Water-Based Drilling Fluids. [PDF]
Gels, 2022 Zhao Z, Chen S, Zhou F, Wei Z.
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INFLUENCE OF PURIFICATION PROCESS ON THE CHARACTERISTICS OF ROMANIAN CALCIUM BENTONITE
Journal of Engineering Studies and Research, 2016 A calcium bentonite from Orasu Nou deposit (Romania) was used as raw material. The natural bentonite provided by S.C. Bentonita S.A., Satu Mare has the following mineralogical composition: 57 % montmorillonite, 40 % cristobalite, and 3 % quartz. Due to the relatively high percentage of impurities in natural calcium bentonite, we decided to purify the ...
Georgescu, Ana-Maria +2 more
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Characterization and Performance Evaluation of Bentonite Modified by Aluminium and Silver Salts
工程科学与技术, 2010 :The calcium base bentonite was modified by aluminum and silver salts. By means of optimizing the Al or Ag loading, calcination temperature and calcination time, the modified bentonite with high performance of treating dye wastewater was obtained.
Du Guoyong +3 more
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Effect of calcium and sodium-activated bentonites as waterproofing additives in polymer-modified cement mortars [PDF]
CerâmicaCement mortar is typically formulated by blending fine aggregate and water, yielding a matrix characterized by heterogeneity and porosity. However, these inherent characteristics can exacerbate structural leakage, allowing water infiltration in buildings.
P. B. Leme, M. R. Morelli, A. P. Luz
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MineralsThis study investigates the performance of two bentonite materials, specifically MX-80 (Na-bentonite) and FEBEX (Ca-Mg-Na-bentonite), employed as engineered barriers in deep geological disposal facilities for the isolation of high-level radioactive waste, contained in metallic canisters.
Carlos Mota-Heredia +2 more
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Activated Bentonite for Physical, Mechanical, and Durability Properties of Concrete—A Review
Advances in Civil EngineeringBentonite mostly exists in many counties and studies reported employment of activated bentonite in the concrete improves concrete performance more than using raw bentonite. However, it is not well-known which range of bentonite activation temperature and
Tsion Amsalu Fode +2 more
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Polyurethane composite behavior influenced by the characteristics of the employed bentonite filler
Scientific ReportsBentonite clays are widely used in polymer composites due to their ability to enhance mechanical and thermal properties. This study investigates the impact of various bentonite types on the rheology of polyurethane (PU) foam formulations and the ...
Alpár Ferencz Hatvani-Nagy +3 more
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, 2015 Calcium bentonite was activated with soda ash (Na2CO3) at various ratios and due to the ion exchange; the original Ca-bentonite was converted to Na-bentonite. It was found that the Na2CO3 activation improves the swelling and rheological properties of the
Al-Marri, M.J. +3 more
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Journal of Applied Sciences and Environmental ManagementThe objective of this paper was to investigate the sorption capabilities of unmodified calcium bentonite (UCB) and tetrabutyl ammonium chloride modified calcium bentonite (TMB) for removal of crude oil by-products from wastes using appropriate standard procedures.
Oriji, O. G. +2 more
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Journal of Tropical Soils, 2009 Coastal sandy land development faces the sand characteristics, the lower holding water capacity and the larger nutrient leaching due to heavier rainfall in the tropics, soil porosity and without soil layering so it need alternative technology for ...
Saparso +3 more
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