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Title: Influence of solidification accelerators on structure formation of anhydrite-containing binders

The article presents results of scientific analysis of chemical additives influence on acid fluoride binder. It was found that the influence of sulfate nature additives on the process of hydration and solidification of the binder is similar to influence of additives on indissoluble anhydrite. Additives with SO{sub 4}{sup 2−} anion NO{sup −} are more efficient. The mentioned additives according to accelerating effect belong to the following succession: K{sub 2}SO{sub 4} > Na{sub 2}SO{sub 4} > FeSO{sub 4} > MgSO{sub 4}. Facilitation of the process of hydration and solidification of the binder, increase in density and durability of the binder (32 MPa) is to the greatest extent achieved with the introduction of 2% sodium sulfate additive of the binder’s mass into the composition of the binder along with the ultrasonic treatment of water solution. Directed crystal formation process with healing of porous structure by new growths presented as calcium sulfate dehydrate and hydroglauberite provides positive effect.
Authors:
; ; ; ;  [1]
  1. Tomsk State University of Architecture and Building, 2 Solyanaya sq., Tomsk, 634003 (Russian Federation)
Publication Date:
OSTI Identifier:
22494449
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1698; Journal Issue: 1; Conference: AMTC-2015: 2. all-Russian scientific conference of young scientists on advanced materials in technology and construction, Tomsk (Russian Federation), 6-9 Oct 2015; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACCELERATORS; ADDITIVES; ANHYDRITE; ANIONS; AQUEOUS SOLUTIONS; BINDERS; CALCIUM SULFATES; FLUORIDES; HARDNESS; HYDRATION; IRON SULFATES; MAGNESIUM SULFATES; NITRIC OXIDE; POROUS MATERIALS; POTASSIUM SULFATES; PRESSURE RANGE MEGA PA 10-100; SERVICE LIFE; SODIUM SULFATES; SOLIDIFICATION; WEAR RESISTANCE