Use of technogenic alumo-chrome catalyst in anhydrite compositions

Tokarev, Yury; Yakovlev, Grigory

doi:10.1556/pollack.4.2009.3.7

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…There are various ways to improve the water resistance of gypsum binders by adding additives which are industrial waste. Thus, using chromium-alumina catalyst [3][4], waste of petrochemical production, leads to the formation of dense fine-crystalline structure of anhydrite matrix with finely dispersed amorphous new formations and improves the physical and mechanical properties of the binder. Using aluminous mixture [5] (smelter slag) leads to the formation of amorphous structures on the surface of gypsum crystals covering the surface of crystal hydrates and leading to the increased water resistance of gypsum matrix.…”

Section: Introductionmentioning

confidence: 99%

Researching of the Water Resistance of Hydrophobized Tongue-and-Groove Gypsum Slabs

Bessonov

Zhukov

Gorbunova

2021

Stroitel'nye Materialy

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For improvement of physico-mechanical properties of plaster materials the industrial waste -metallurgical dust formed by manufacture of steel, was used. Modification of gypsum binder by adding metallurgical dust in quantity 0.5% from the weight the binder caused the significant change in microstructure of the gypsum stone, this led to an increase in compressive strength by 80% and to increase of softening coefficient up to 0.85. Such parameters are provided due to formation of crystals of the gypsum protected by an environment of amorphous structure, less soluble, than the not protected crystals of gypsum, preventing destruction crystals of gypsum and water limiting access to crystals of gypsum matrix. For achievement synergetic effect with metallurgical dust dispersions multi walled carbon nanotubes (MWCNTs) were added. MWCNTs act as the centers of crystallization on which surface is going the formation of the ordered dense structure to block packing crystals. The presence in metallurgical dust calcium hydroxide leads to formation of amorphous phase on surface of crystals of gypsum. The developed plaster composition modified by the combined additive according to its properties is similar to waterproof materials. Recycling of metallurgical dust using it as the additive modifying gypsum binder, will improve the ecological conditions in area of an arrangement of the steel production metallurgical complexes.

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Section: Introductionmentioning

confidence: 99%

Researching of the Water Resistance of Hydrophobized Tongue-and-Groove Gypsum Slabs

Bessonov

Zhukov

Gorbunova

2021

Stroitel'nye Materialy

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Binders Based on Natural Anhydrite and Modified by Finely-Dispersed Galvanic and Petrochemical Waste

Sychugov

Tokarev

Plekhanova

et al. 2013

Procedia Engineering

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Utilization of blast furnace flue dust while modifying gypsum binders with carbon nanostructures

Yakovlev

Khozin²

2014

The 9th International Conference "Environmental Engineering 2014"

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For improvement of physico-mechanical properties of plaster materials the industrial waste-metallurgical dust formed by manufacture of steel, was used. Modification of gypsum binder by adding metallurgical dust in quantity 0.5% from the weight the binder caused the significant change in microstructure of the gypsum stone, this led to an increase in compressive strength by 80% and to increase of softening coefficient up to 0.85. Such parameters are provided due to formation of crystals of the gypsum protected by an environment of amorphous structure, less soluble, than the not protected crystals of gypsum, preventing destruction crystals of gypsum and water limiting access to crystals of gypsum matrix. For achievement synergetic effect with metallurgical dust dispersions multi walled carbon nanotubes (MWCNTs) were added. MWCNTs act as the centers of crystallization on which surface is going the formation of the ordered dense structure to block packing crystals. The presence in metallurgical dust calcium hydroxide leads to formation of amorphous phase on surface of crystals of gypsum. The developed plaster composition modified by the combined additive according to its properties is similar to waterproof materials. Recycling of metallurgical dust using it as the additive modifying gypsum binder, will improve the ecological conditions in area of an arrangement of the steel production metallurgical complexes.

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Use of technogenic alumo-chrome catalyst in anhydrite compositions

Cited by 3 publications

References 11 publications

Researching of the Water Resistance of Hydrophobized Tongue-and-Groove Gypsum Slabs

Researching of the Water Resistance of Hydrophobized Tongue-and-Groove Gypsum Slabs

Binders Based on Natural Anhydrite and Modified by Finely-Dispersed Galvanic and Petrochemical Waste

Utilization of blast furnace flue dust while modifying gypsum binders with carbon nanostructures

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