The released sulfate can lead to a secondary ettringite formation in the concrete matrix, but the degradation associated with this appears to be minor. The reaction of the iron sulfides was found to be very slow even when laboratory samples were exposed to elevated temperatures....
The iron sulfate can be iron(II) sulfate or iron(III) sulfate or a mixture thereof. Iron(II) sulfate can be used in the form of green salt or filter salt. The inventive iron sulfate is used in agriculture as fertilizer additive, moss control agent, pesticide and lawn fertilizer, in ...
Production of iron oxide yellow, useful for pigmenting building material, e.g. concrete, or plastics or as disperse dye, involves adding iron-II sulfate or chloride solution to alkaline solution and oxidation under specified conditionsIn iron oxide yellow production by adding iron-II sulfate or ...
Galimova [25] synthesized pure Fe-ettringite in an aqueous solution using calcium hydroxide and ferric sulfate in 1988, investigating its formation and decomposition process. Möschner [24] filled a gap in the thermodynamic database by studying the solubility of synthesized pure Fe-ettringite. He ...
S70 is black iron/ steel powder used in fire works, concrete (to increase weight and create rust effects), soil additive, chemical reactions (production of iron sulfate, iron chloride, ..), electromagnetism (as iron filings). (Mesh 70) (Note: S70 is more coarse than S100) (S70 is being...
Corrosion of Reinforced Concrete Specimens Exposed to Hydrogen Sulfide and Sodium Sulfate. cigr.org 钢筋 混凝土的氢化硫和硫酸钠侵蚀。 cigr.org [...] provision of prospecting and surveying services in respect of iron, copper and manganese), a sampling frame of establishments under [...]...
A research study investigating the impact of various anions on the rate of hematite leaching found that chloride ions were more effective in enhancing the reaction rate compared to sulfate ions. This phenomenon was attributed to the preferential adsorption of chloride ions on the reaction surface, ...
preferred more than other processes in terms of cost and the ease of application (Abujazar et al.2022a). Coagulation is performed by adding chemicals such as Al2(SO4)3, FeCl3, ferric sulfate, poly aluminum chloride (PACl), and polyaluminum ferric chloride (PAFCl) as positively charged ...
Iron oxide black is produced via chemical synthesis using iron oxide yellow (FeO(OH)) or iron oxide red (Fe2O3) and/or iron(II) sulfate as starting chemicals which are converted/reacted in the presence of pure oxygen and caustic soda (precipitation process). Read Full Article August 30...
A hanging drop was prepared by mixing equal volumes of protein solution and reservoir solution containing 0.1 M sodium acetate trihydrate (pH4.4) and 1.8M ammonium sulfate. The sizes of small crystals were approximately 0.3 mm × 0.3 mm x 0.3 mm (Fig. S5B). For cryoprotection, the crystals...