Cellular Composites with Ambient and Autoclaved Type of Hardening with Application of Nanostructured Binder

NELYUBOVA, V.V.; Pavlenko, Natalia Viktorovna; Netsvet, Daria Dmitrievna

doi:10.1088/1757-899x/96/1/012010

Cited by 8 publications

(5 citation statements)

References 4 publications

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“…Problems of technological mineral-and petrogenesis during hydrothermal synthesis of phases of the CaO-SiO 2 -H 2 O system attract practical interest during the production of lime-silica-based construction materials [24,25]. The typical silica-bearing component in CaO-SiO 2 -binders is quartz [26,27].…”

Section: Introductionmentioning

confidence: 99%

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

et al. 2021

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In this research, a phase formation in CaO–SiO2–Al2O3–H2O binding system under hydrothermal conditions was studied. The novelty of this article lies in the quantitative full-profile X-ray diffraction (XRD) analysis used to determine kinetics of mineral formation in the binder system “lime–granite mineral modifier (GMM)”. The formation of a polymineral system is described in detail, as well as quantitative relationships between mineral composition of newly formed phases and the binding mixture ratios were determined. Phenomenological model of mineral formation in a “lime–GMM” system under hydrothermal conditions was proposed. The results obtained allow the demonstration of this binding system as a binder that is characterized by superposition of hydration and geopolymerization. The properties (strength, density, water absorption, porosity) of compressed autoclave-hardened materials with the addition of a granite modifier introduced instead of part of the sand as an aggregate have been studied. The maximum increase in strength (more than 50%) is observed at a modifier content of 15%. This is due to the formation of a rational composition of neoplasms, the compaction of the structure of the pressed products and the optimization of their pore space, which is confirmed by the data of X-ray diffraction analysis, scanning electron microscopy and the method of gas adsorption.

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Section: Introductionmentioning

confidence: 99%

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

et al. 2021

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“…Effective methods include the rational selection of the composition, the use of protective coatings, as well as timely elimination of external and internal defects formed during operation, including microcracks. In order to minimize the negative effects of defects, a significant number of methods was proposed, the basis of which was the use of various functional additives that ensured the decrease in shrinkage deformations of concrete both during its production and during operation [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Agents of Initiation of Carbonate Biomineralization on Cement Properties

Строкова

NELYUBOVA

Duhanina

et al. 2021

MSF

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The paper presents the results of the assessment of the effect of bacterial microorganism Sporosarcinapasteurii and CaCl2 and CH4N2O precursors as agents initiating carbonate mineralization processes on the construction and technical properties of binders. In order to achieve this, a preliminary bacterial solution with precursors was prepared, which was introduced into the system instead of mixing water in the range of 0–10% with interval of 2%. The effect of the bacterial solution as a complex additive on the physical and mechanical properties of cement paste and stone is shown: normal density, setting time, water segragation, strength in compression and bending. The introduction of the solution provides a reduction in the setting time of cement without loss of strength both at the initial and at the final stages of hardening.

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“…The studies were carried out in the field of application of nano-structured binders as a modifying additive and active binder component in the preparation of autoclaved hardening materials [10][11][12], composite binders based on cement [13][14][15], composite gypsum binders [16,17] and non-autoclaved hardening cellular materials [18,19].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Polyvinyl Alcohol on the System of Cement-Free Binding Alumino-Silicate Composition

Строкова

Sivalneva

Kobzev

2020

SSP

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Cement-free binding materials are a promising type of materials. The relevance and the possibility of increased efficiency of these materials are reasoned by environmental and technical-economic conditions of the current state of building industry. As a result of research, the following effect was established: polyvinyl alcohol on cement-free highly concentrated aluminosilicate binder suspension, obtained from granio-diorite screenings, increases the stability of structure-forming processes, due to the formation of associates and binding particles in the form of bulk network structures, that create a frame. Polyvinyl alcohol plays the role of a non-ionic regulator of the dimension and stability of these emerging structures, that determine and control the properties of the material, as a whole.

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Cellular Composites with Ambient and Autoclaved Type of Hardening with Application of Nanostructured Binder

Cited by 8 publications

References 4 publications

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

Effect of Agents of Initiation of Carbonate Biomineralization on Cement Properties

The Effect of Polyvinyl Alcohol on the System of Cement-Free Binding Alumino-Silicate Composition

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