Improving efficiency of polystyrene concrete production with composite binders

Lesovik, R. V.; Ageeva, Marina; Lesovik, G. A.; Sopin, D.M.; Kazlitina, O.V.; Mitrokhina, A. A.

doi:10.1088/1757-899x/327/4/042063

Cited by 4 publications

(2 citation statements)

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“…The solution of this problem is possible through the use of new types of raw materials. For example: waste of wet magnetic separation of ferruginous quartzites (WMS waste), nanodispersed silica powders (NSP) and chalk, as multicomponent finely dispersed mineral additives in CGB compounds [8][9][10][11]. The aim of the work was to increase the efficiency of the CGB by using multicomponent mineral additives.…”

Section: Introductionmentioning

confidence: 99%

Properties of Composite Gypsum Binders Depending on Multicomponent Mineral Additives

Lesovik

Чернышева

Drebezgova

2019

MSF

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This article considers the possibility of increasing the effectiveness of composite gypsum binders (CGB) by controlling the processes of structure formation as a result of using new types of multicomponent mineral additives that are significantly different from the traditionally used quartz raw materials:- waste of wet magnetic separation of ferrous quartzites (WMS waste,) of polymineral composition with quartzy of varying degrees of crystallinity, nanodispersed silica and chalk powder. We have studied the cause-effect relationship between the change in the ratio of binding and mineral additives of various compositions, which determines the conditions for the formation of technological and strength characteristics of the projected composite materials with specified performance properties. We have established the presence of regularities in the changes in the properties of CGB, the composition of the hardening products and the microstructure depending on the type and content of gypsum binders of β-and α-modifications, portland cement, multicomponent finely-dispersed mineral additives, the regularity consists in the binding of portlandite, which is released upon portland cement hydration, by the amorphous phase of earth siliconas a part ofnanodispersed powder and chalcedony variety of quartz waste of wet magnetic separation of ferruginous quartzites. This provides a reduction in the basicity of the solidifying system, the intensification of crystal formation, and the formation of newgrowths with a high content of tobormorite-low-basic calcium hydrosilicates that compact the microstructure of the hardening matrix and, as a result, increase the water resistance and stability. It is noted that this mechanism of hydration of CGB minimizes inner stresses and volume deformations, therefore the number of microcracks decreases, which leads to an increase in its efficiency in comparison with the traditionally used gypsum binder and that differs from the traditional portland cement by a fast strength generation.

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Section: Introductionmentioning

confidence: 99%

Properties of Composite Gypsum Binders Depending on Multicomponent Mineral Additives

Lesovik

Чернышева

Drebezgova

2019

MSF

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“…Numerous studies have confirmed the important role of the particle size distribution, the properties surface nature and specific surface in the raw mix for regulating the physical and mechanical building materials characteristics [1][2][3][4][5]. The main criterion is the natural and man-made raw materials genetic characteristics influence [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Technogenic Raw Materials Surface Characteristics Role when Obtaining the Autoclave Hardening Binders of

Fomin

Lesovik

Glagolev

et al. 2019

MSF

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The paper investigates the surface wet magnetic separation (WMS) technogenic raw materials concentration tailings particles properties. The mechanical activation effect nature on the binder structural and phase characteristics is revealed. High pozzolan activity of WMC tails, which consists in genetic and morphological features of the surface of poly-mineral structures has been established. During mechanical activation of lime together with WMS tailings, an increase in the number of neoplasms occurs in the amorphous phase form with a low degree of polymerization, which is confirmed by the acid-soluble SiO2presence, as well as by X-ray phase analysis. The work results indicate a WMC waste particles surface high energy potential for its use in building materials for autoclaved hardening. This study will contribute to the energy and resource-saving technologies development, the solution of environmental problems in order to create a comfortable environment for life and work.

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