Properties of foam concrete based on highly concentrated aluminosilicate binder suspension

Sivalneva, M.N.; Строкова, В.; Kobzev, V. A.

doi:10.1088/1757-899x/905/1/012064

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…To increase the thermal protection of buildings and structures, new compositions and technologies for the production of heat-insulating materials including cellular concrete are being developed. Modern methods of increasing the efficiency of cellular concrete [1][2][3][4][5][6] are associated with application of mineral modifiers and additives of various composition and morphology, which affect the processes of structure formation during the hardening of the material and the durability of the cellular structure.…”

Section: Introductionmentioning

confidence: 99%

Properties of Microfibers of Various Compositions as a Component of Cellular Composites

Netsvet

Popov

Nelubova

et al. 2021

MSF

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The paper presents studies on the properties of various types of micro-reinforcing fibers to assess their role and effectiveness in the structure formation of the cellular composite. Based on the data on the weight loss after exposure in a model medium of cement, analysis of the alkali resistance of fibers of five different types – basalt fiber, heat-treated basalt fiber, polymer fiber and glass fibers from two different manufacturers – was carried out. It is shown that the fibers have a sufficiently high durability in the medium of hardening cement, which is expressed by a relatively insignificant weight loss of the original fiber after exposure in a model medium for 28 days in ambient conditions. The weight loss for some fibers sharply increases when hardening conditions are changed to hydrothermal ones. The images of fibers exposed in a model medium of cement, obtained using scanning microscopy, were also analyzed, and the character of distribution of acidic and basic adsorption sites on the surface of fibers depending on the type was assessed. Based on the analysis of the obtained data, we can talk about a high number of active sites on the surface of basalt and glass fibers, which ensures the formation of crystalline new formations on them and makes it possible to predict their high adhesion to the cement matrix.

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