Influence of Carbon Nanomodifier on the Structure and Properties of the Modified Gypsum Binder

Matveeva, Larisa; Letenko, D. G.; Mokrova, M. V.

doi:10.4028/www.scientific.net/msf.992.233

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…The performance of cellular honeycomb structure gypsum concrete depends on its pore structure, which is a hardened foam with many pores and voids, and is in turn determined by the quality and quantity of gypsum binder components and pore-forming additives [7].…”

Section: Classification Featurementioning

confidence: 99%

Influence of the macrostructure on the physic-mechanical and heat-protective characteristics of porous gypsum concrete

et al. 2023

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The work is devoted to the study of the characteristics of porous gypsum concretes obtained by the methods of foaming and gas formation using an acid blowing agent. Modification of the structure of gypsum stone makes it possible to obtain materials with high strength and good heat and sound insulation characteristics. The characteristics of the durability of the material largely depend on the type of pore structure, and the creation of the required pore structure can be carried out by various methods, among which the most studied and effective are foaming, which involves the introduction of gypsum dough into a pre-prepared foam and gas formation initiated by introducing gas-forming agents into the mixture at the stage mixing. In the work, samples of foam-gypsum and gas-gypsum were made, their strength characteristics and their thermal conductivity were evaluated. Using the method of optical microscopy, a comparative assessment of the macrostructure of cellular gypsum concretes and its comparison with gypsum stone was made. Using an electronic microscope, the microstructures of gas gypsum and foam gypsum were studied at x20, x100 and x500 magnifications. Fundamental differences in the resulting structures are established. From the array of data obtained, the most effective compositions were selected, proving the prospects for the development of porous gypsum materials. Based on the analysis and generalization of the obtained experimental data, recommendations are given on the use of the obtained compositions of porous gypsum concretes in civil engineering.

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Section: Classification Featurementioning

confidence: 99%

Influence of the macrostructure on the physic-mechanical and heat-protective characteristics of porous gypsum concrete

et al. 2023

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“…In this context [5], studied the effect of carbon nanomodifier (HFNCM) on the structure and properties of plaster stone, where they obtained improvements in water strength. The research by LI et al [6] evaluated the influence of nanosilica on flue gas desulfurization (FGD) plaster and observed a decrease in the water absorption rate and an increase in compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Use of nanotalc as raw material for application in plaster matrix

Villela,

Borges,

Arantes

et al. 2023

Matéria (Rio J.)

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Despite the increasing use of plaster as a construction material, due to its numerous advantages when compared to cement, its use is still restricted, because of its low mechanical resistance and high solubility in water. In this context, research has been carried out related to the addition of nanomaterials to improve the mechanical and physical properties of plaster in civil construction. A highly available, low-cost nanomaterial with excellent properties is nanotalc. In this work, nanocomposites with dimensions of 40 × 40 × 160 mm were produced with ultrafine micronized nanotalc replacing plaster in proportions of 0%; 0.5%; 1%; 1.5% and 2%. The physical and mechanical properties of the nanocomposites were evaluated according to standards. The nanocomposites produced with 1% nanotalc showed satisfactory results for physical and mechanical properties, with an increase of 1.8% in apparent density and 24.12% in compressive strength, and a decrease in water absorption of 6.23%, compared to the composite without the incorporation of nanotalc. The production of nanocomposites with the incorporation of 1% nanotalc is viable and shown to be promising, presenting potential for application as linings and internal partitions, since they showed low water absorption due to the hydrophobicity of nanotalc.

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Influence of bed ash on the rheology and properties of gypsum building mixtures

Sweity,

Petropavlovskaya,

Novichenkova

et al. 2023

E3S Web Conf.

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In the article, the influence of the aluminosilicate part of fuel bottom ash and slag mixtures on the water demand of gypsum raw materials of dry building mixtures is considered. It is shown that the aluminosilicate filler has a plasticizing effect. This is due to the presence of microspheres in the composition of the filler. They reduce the amount of water needed to achieve normal gypsum paste consistency. This is reflected in other physical, mechanical and structural characteristics of gypsum. The ash filler in the optimal ratio with the gypsum binder compacts the structure of the stone. does not participate in chemical transformations. To increase the efficiency of the ash filler, it is necessary to introduce additional components that activate the processes of structure formation in ash-gypsum binders.

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Influence of Carbon Nanomodifier on the Structure and Properties of the Modified Gypsum Binder

Cited by 4 publications

References 2 publications

Influence of the macrostructure on the physic-mechanical and heat-protective characteristics of porous gypsum concrete

Influence of the macrostructure on the physic-mechanical and heat-protective characteristics of porous gypsum concrete

Use of nanotalc as raw material for application in plaster matrix

Influence of bed ash on the rheology and properties of gypsum building mixtures

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