Modifying intensification of the hardening of extruded construction gypsum nanocomposites

Khalikov, R. M.; Sinitsina, E.A.; Silantyeva, E.I.; Pudovkin, A. N.; Недосеко, И В

doi:10.15828/2075-8545-2019-11-5-549-560

Cited by 2 publications

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“…2), the hydrophobic hydrocarbon part of the foaming agent molecules are arranged in a monomolecular layer in the gas phase, forming a 2.5-3 nm diffinyl layer. Local micro-heterogeneities and germinal calcium sulfate dihydrate nanoclusters crystallohydrates with sizes of ≈ 20-70 nm [11] lead to variations in the thickness of the molecular layer of the foaming agent in the nanogypsum foam composition. Further strengthening of the primary nanostructure occurs due to an increase in the number of nanocontacts between unrelated growing gypsum microcrystals.…”

Section: Introductionmentioning

confidence: 99%

Effective use of dry foaming agents in the manufacture of foam gypsum thermal insulation nanocompositions

Shigapov¹,

Sinitsin²,

Khalikov³

et al. 2022

Nanobuild

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Introduction. The elaboration of foamed eco-friendly gypsum nanocomposites with low specific gravity, high thermal insulation, operational and technical and economic characteristics remains an urgent task. Controlled hardening of gypsum foam nanoassemblers using dry foaming agents is a promising direction in the technology of production of heat-insulating building materials. Methods and materials. The production of a foam gypsum composition was carried out in an ejector-turbulent mixer by mixing a gypsum nanobinder with functional foaming nanoadditives. Building gypsum G5 BII was used as a binder in the work; porization of gypsum compositions was carried out using an adsorbed foaming agent PBNS. Results. The transformation of liquid-phase foaming agents into solid-phase ones by binding water allows the production of gypsum foam compositions from dry mixtures, which gives high dosing accuracy, a good degree of homogenization of components and stable characteristics of foamed gypsum nanocompositions. In production conditions, a one-storey small-sized pavilion was built using a pilot 3D printer AMT S1160, in which vertical enclosing structures are filled with foamed heat-insulating nanostructured foam gypsum. Monolithic foam gypsum nanomaterial with a density of 300-400 kg/m 3 was used for insulation and sound insulation of attic floors during the overhaul of the historic building of the Veterans Hospital in Ufa. Discussion. The elaboration of technology for obtaining foam gypsum from dry mixtures is based on the advantage of manufacturing and using thermal insulation nanocompositions, which allows for significant punctuality of dosing and stable characteristics of foam gypsum building materials. Surfactants have a significant effect on the kinetics of the structure formation of the foam gypsum nanocomposition and slow down the coalescence of air bubbles. Conclusions. Nanoporous foam gypsum concrete, obtained as a result of controlled hardening, with a density of 400 kg/m 3 has a thermal conductivity of 0.12 W/(m•ºС) and a compressive strength of 1.4 MPa. The compressive strength of foamed foam gypsum using a dry foaming agent on sorbents is 17% higher than the strength of a heat-insulating nanomaterial prepared using traditional technology.

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Section: Introductionmentioning

confidence: 99%

Effective use of dry foaming agents in the manufacture of foam gypsum thermal insulation nanocompositions

Shigapov¹,

Sinitsin²,

Khalikov³

et al. 2022

Nanobuild

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Innovative Technologies in the Regional Production of Gypsum Building Composites

Khalikov¹,

Латыпова²

2022

Высокие Технологии И Инновации В Науке: Сборник Избранных Статей Международной Научной Конференции (Санкт-Петербург, Июль 2022)

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Сырьевая база региональной стройиндустрии гипсовых композиционных материалов Башкортостана включает достаточно крупные месторождения гипсового камня и ангидрита. Инновационная рекультивационная технология добычи гипса является природосберегающим способом восстановления эродированных ландшафтов в результате карьерных разработок гипсосодержащего сырья. В Башкортостане рентабельно выпускаются композиционные строительные материалы и востребованные изделия на основе гипсовых вяжущих. The raw material base of the regional building industry of gypsum composite materials of Bashkortostan includes quite large deposits of gypsum stone and anhydrite. Innovative recultivation technology of gypsum mining is a nature-saving way to restore eroded landscapes as a result of quarrying gypsum-containing raw materials. Composite building materials and demand products based on gypsum binders are produced cost-effectively in Bashkortostan.

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Modifying intensification of the hardening of extruded construction gypsum nanocomposites

Cited by 2 publications

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Effective use of dry foaming agents in the manufacture of foam gypsum thermal insulation nanocompositions

Effective use of dry foaming agents in the manufacture of foam gypsum thermal insulation nanocompositions

Innovative Technologies in the Regional Production of Gypsum Building Composites

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