Additives for cement compositions based on modified peat

Kopanitsa, N. O.; Sarkisov, Yurij; Gorshkova, Aleksandra; Demyanenko, Olga

doi:10.1063/1.4937885

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…As a concrete filler in the composition of the cement matrix, fine peat was used, previously modified by aggregates of nanoparticles based on ash, sludge and surfactants (lignosulfanate and poly-naphthalene methylene sulfonate). The use of new types of surfactants can improve the water wettability of peat particles and polystyrene granules, which reduces the water-cement ratio and improves the strength of the material [9][10][11][12]. Modification of peat was carried out by wet grinding in a drum-type mill with the addition of surfactants in the amount of 5-10% of the peat mass.…”

Section: Resultsmentioning

confidence: 99%

Application of Modified Peat Aggregate for Lightweight Concrete

Kapustin

Belyakov

2020

SSP

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The scientific article "Application of Modified Peat Aggregate for Lightweight Concrete" presents the results of studies of the properties of a new composite material for use in enclosing structures of residential and public buildings. Physical and mechanical characteristics of possible aggregates of local production for this type of concrete affecting its operational properties are considered. The prospects of using fly ash as an additive improving the characteristics of polystyrene concrete with the addition of modified peat have been established. The analysis was made and the optimal compositions for obtaining lightweight concrete based on peat and polystyrene foam were selected. The desorption properties of lightweight concrete important for its effective operation as a wall material were tested. It was found that the use of new types of surfactants can improve the water wettability of peat particles and polystyrene granules, thereby reducing the water-cement ratio and improving the compressive strength of the material. Possible efficiency of application of this type of concrete for use in enclosing structures of buildings and constructions under construction in seismic regions of Russia is considered. The presence of damping effect manifested in the material due to the presence of polystyrene granules in the perception of a certain level of load, which is important for the work of concrete under seismic influences, was experimentally established.

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Section: Resultsmentioning

confidence: 99%

Application of Modified Peat Aggregate for Lightweight Concrete

Kapustin

Belyakov

2020

SSP

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“…In the construction industry, wastes from peat harvesting and processing can be used for the production of hydrophobic modifiers [6], hollow aggregates for lightweight concrete [25], building materials with different types of peat components [26][27][28][29][30], and bitumen retaining additives in crushed-mastic asphalt concrete [31].…”

Section: Constructionmentioning

confidence: 99%

Directions for the Rational Use of Additional Organic and Mineral Resources of Peat Deposits

Misnicow

Iablonev

2021

E3S Web Conf.

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The article discusses the issues of insufficient use of organic and mineral resources of peat deposits (substandard peat, mineralised sapropel, wood inclusions of peat deposit, organomineral deposits, etc.). The authors propose a structural scheme of directions of processing and use of organic and organomineral biogenic resources. It includes obtaining various types of composite formed materials for their application in four main directions: energy, agricultural production, environmental protection, and construction industry. Mineral clay components improve the ability of composite materials to be shaped by extrusion and pelletising methods. Some of them also have catalytic activity, which is the basis for their use in thermochemical processing. In peat raw materials, subjected to the process of self-heating during the storage, there is a change of the group chemical composition with the formation of hydrophobic compounds (termobitums). This opens up additional perspectives of their extraction and usage for hydrophobic modification of mineral disperse materials. The classification of industrial wastes and organomineral resources of peat deposits according to the required qualitative characteristics with the indication of possible directions of additional processing is presented in the paper.

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“…Today, these conditions are met by wall materials with a cellular structure. Taking into account the increased regulatory requirements to thermal protection of buildings the studies are carried out to create new types of effective wall materials from natural and technogenic raw materials [5][6][7][8][9][10][11][12]. Thus, the creation of new types of cellular ceramic materials is becoming an actual direction of technology development [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Study on Structure and Phase Composition of Cellular Ceramic Materials from Dispersed Silica-Rich Rocks

Stolboushkin

Иванов

Fomina

2018

SSP

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Studies on structure, phase composition and properties of ceramic wall materials with a glass-crystalline framework from dispersed silica-rich rocks are described. The results of chemical, mineralogical and granulometric compositions of tripolite and granulated foam-glass crystalline material (GFGCM) are presented. The dependence of physical and mechanical properties of cellular ceramic materials on GFGCM content in the composition in the amount from 5 to 75% is determined. Test samples of cellular ceramic materials with dimensions 250 × 120 × 65 mm, having a compressive strength 16.2-20.8 MPa, water absorption 7.1-7.9 % and an average density 0.99-1.32 g/m3 were produced at the factory. At the macroscale level the cellular structure of the ceramic material consists of closed pores with a vitrified inner surface pore, glass-crystalline outer shell of the pores and solid phase of the framework walls. It was established that after firing in the temperature range 850-900 °C the walls of the framework are represented by quartz, feldspar and hematite, a pronounced halo is indicating a significant amount of glass phase.

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Additives for cement compositions based on modified peat

Cited by 6 publications

References 4 publications

Application of Modified Peat Aggregate for Lightweight Concrete

Application of Modified Peat Aggregate for Lightweight Concrete

Directions for the Rational Use of Additional Organic and Mineral Resources of Peat Deposits

A Study on Structure and Phase Composition of Cellular Ceramic Materials from Dispersed Silica-Rich Rocks

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