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

Journal Article · Fri Jan 15 00:00:00 EST 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4937872· OSTI ID:22494449

Kudyakov, A.; Sarkisov, Y.; Tolstov, D. ^[1]

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1. Tomsk State University of Architecture and Building, 2 Solyanaya sq., Tomsk, 634003 (Russian Federation)

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.

• OSTI ID: 22494449
• Journal Information: AIP Conference Proceedings, Vol. 1698, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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