Results 31 to 40 of about 40,441 (143)
Dissolution rate of powdered quartz in acid solution
GEOCHEMICAL JOURNAL, 1974 The study reported in this paper concerns the role of salts in dissolution of powdered quartz. Kinetic dissolution experiment was carried out in acid media at 60 and 90°C to know the mechanism of acid alteration of rocks. The dissolution rate of silicon was accelerated by addition of such salts as sodium chloride and sodium sulfate in solution above ...
Kamiya, Hiroshi +2 more
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Preparation of nanocrystalline quartz via high energy ball milling
مجلة جامعة الزيتونة, 2021 The preparation of Nanocrystalline powder via high energy ball milling is drawing a considerable attention at the present time for its simplicity and relatively low cost.
Jihan Eldaour
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Strength optimization of reactive powder concrete
Revista IBRACON de Estruturas e Materiais, 2020 : Recent reports on reactive powder concrete address important aspects regarding its performance. Several techniques are used to improve the design of such concretes. Ultra-high compressive strengths have been reported with the application of pre-setting
Abrahão Bernardo Rohden +2 more
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Non-Structural Vibro-Compressed Concrete Incorporating Industrial Wastes
RecyclingThis study presents more eco-efficient concrete formulations for precast vibro-compressed masonry blocks. The proposed formulations incorporated industrial waste, glass powder (GP), and quartz powder (QP), in which natural aggregate was partially ...
Gabriela Bertazzi Pignotti +2 more
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Thermal Expansion of Fused Quartz Powder Compacts
Journal of the Ceramic Society of Japan, 1997 The fused quartz is one of the most typical materials of low thermal expansion. However, it was found that compacts prepared by isostatic compression of ground powder of fused quartz showed an anomalously high thermal expansion of 7×10-6/°C, i.e., about 10 times of that of the normal fused quartz. The density of the glass powder increased with grinding
HAMANO, Kenya +3 more
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Applied SciencesLow-carbon design has become increasingly important in the cement and concrete industry. Previous studies have primarily focused on the impact of different types of admixtures on the carbon emissions of concrete while overlooking the influence of the ...
Bo Yang, Xiao-Yong Wang
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Discover MaterialsThis study investigates the use of ground granulated blast-furnace slag (GGBS) and quartz powder as partial cement substitutes to lessen the carbon footprint associated with concrete production.
B. Narendra Kumar +2 more
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Studia Universitatis Babes-Bolyai ChemiaThe objective of this study is to evaluate the pozzolanic activity of metakaolin, glass powder and silica powder for use in cementitious mortars. Thus, metakaolin was produced by calcination at 700 °C of a clay soil from Burkina composed of kaolinite ...
Issiaka SANOU +4 more
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Mechanical activation in the production of lime-sand mixtures
Magazine of Civil Engineering, 2020 This paper presents a review of the author’s research of the effect of different grinding units’ on the physical and chemical profile and geometry of quartz powders.
Ruslan Ibragimov +2 more
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Achieving Mixtures of Ultra-High Performance Concrete [PDF]
Constructii: Journal of Civil Engineering Research, 2013 Ultra-High Performance Concrete (UHPC) is a relatively new concrete. According to [11] UHPC is that concrete which features compressive strength over C100/115 class.
Mircea POPA +3 more
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