Methods of introduction of glyoxal-containing additives into foam concrete mixture

Kudyakov, A. I.; Steshenko, A. B.; Simakova, A. S.; Latypov, A. D.

doi:10.1088/1757-899x/597/1/012037

Cited by 5 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the research results [23][24][25][26][27][28][29][30][31][32][33], the existing technology for the production of porous materials was adjusted. According to well-known technologies, production of porous gypsum wall materials is carried out with a high value of the gypsum paste normal consistency.…”

Section: Resultsmentioning

confidence: 99%

Formation of porous structures in production technology of construction materials based on building gypsum plaster

Kurmangalieva,

Anikanova,

Kudyakov

et al. 2023

Nanobuild

View full text Add to dashboard Cite

Introduction. This article presents the results of the research works on formation of building gypsum plaster porous structure with the use of recovered anhydrite raw materials and chemical additives, and describes a method for production of wall materials. The relevance of this paper is stipulated by the need to expand the range and increase the manufacture of heat-insulating and structural-heat-insulating products based on gypsum binders and local mineral raw materials, as well as the development of technologies to ensure the production of gypsum materials with improved performance. The authors proposed certain methods for forming the porous structure of building gypsum plaster and improving its performance in terms of porosity and thermal conductivity through the use of modified recovered raw materials and chemical additives of calcium chloride and sodium carbonate. Materials and methods. The study of the effect of modifying additives on the properties of the mixture was carried out using gypsum paste of normal consistency (NC = 55%). The preparation of samples and testing were performed according to the methods specified in the national standards with the use of porous additives of calcium carbonate, fluoroanhydrite and chemical additives for the rheological properties of the mixture, average density and strength of the samples, the patterns and mechanism of the processes of gypsum stone structure formation were established. Results. The application of fluoroanhydrite modified in the disintegrator with an equimolar amount of calcium carbonate leads to a decrease in the average density of the samples to 40% with evenly distributed pores. The analysis of the microstructure of heat-insulating material samples with a density of 550 kg/m 3 showed that the average diameter of micropores is 0.45 mm, while the thermal conductivity of samples with complex chemical additives has the thermal conductivity coefficient of 0.25 W/m°C, which is 30% lower than the thermal conductivity of samples without complex additives. Conclusions. The results obtained create the basis for using recovery raw materials and domestic modifying additives as a pore-forming agent, which allow regulating the structure of gypsum stone in order to produce effective wall materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Formation of porous structures in production technology of construction materials based on building gypsum plaster

Kurmangalieva,

Anikanova,

Kudyakov

et al. 2023

Nanobuild

View full text Add to dashboard Cite

show abstract

“…In a foam concrete mixture with modifying additives, a certain amount of water is released (water-reducing effect) and the foaming ability of the mixture increases [6]. As a result, the water content in the structure of interpore partitions decreases, which leads to a decrease in the number of capillary pores and an increase in the strength of foam concrete [9].…”

Section: Resultsmentioning

confidence: 99%

“…The basic compositions of foam concrete (Table 4) were designed taking into account the results of optimizing the technological regimes for the preparation of foam concrete in a laboratory mixer [5,9,13].…”

Section: Methods and Marerialsmentioning

confidence: 99%

“…One of the effective ways to control the porous structure and strength of the interpore partitions of foam concrete is the introduction of modifying additives into the mixture during mixing, which reduce the water content while maintaining the necessary mobility of the concrete mixture and increase the strength of the cement matrix in the interpore partitions [5,[7][8][9][10]. Developing the composition of foam concrete, it must be taken into account that one part of the water is spent on foam formation, and the other part is used for cement hydration.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural and heat insulating cement based concrete with complex glyoxal based additive

Steshenko¹,

Simakova²,

Inozemtcev³

et al. 2022

Nanobuild

View full text Add to dashboard Cite

Introduction. The article presents the results of studies of the effect of complex additive based on glyoxal on the properties of cement-based foam concrete mix and foam concrete of natural hardening. The relevance of the study is determined by the necessity to provide the required process parameters of mixture for transportation and laying the formwork, as well as providing strength and thermal and physical characteristics of wall structures for the development of the northern regions of Russia, including the Arctic zone. It has been proposed to decrease the shrinkage deformations of the concrete mix and increase compressive strength of hardened foam concrete by affecting the cement matrix with complex modifier based on glyoxal. Materials and methods. The effect of modifying additives on the properties of the foam concrete mixture and foam concrete was studied at a W/S mixture ratio of 0.45. Research has been carried out using test methods set out in national standards. The results of the study of the effect of complex modifying additives (CMA) based on an aqueous solution of glyoxal and organic acids on the rheological and strength properties of foam concrete are presented, the regularities of the processes and the mechanism of structure formation of the modified foam concrete are determined. Results. The use of modifying additives leads to increase result in increasing the aggregative stability and reducing the plastic shrinkage of the foam concrete mix by 22-70%. In foam concrete with the complex additive LA 0.5% + Gl 0.55% the compressive strength rises from 1.96 to 2.43 MPa at the age of 28 days while maintaining the average density of D600. The thermal conductivity coefficient of foam concrete modified with various additives decreased by 5-30% compared to references. Conclusions. The obtained results of the study create in the construction industry the basis for the import substitution of modifying additives on the domestic mineral resource base and the production of effective structural and heatinsulating concretes for the development of the northern regions of Russia.

show abstract

Construction and heat-insulating foam concrete with the use of drilling sludge

Steshenko

Kudyakov

Lukyanchikov

et al. 2022

4th International Scientific and Practical Conference “Advanced Building Materials and Technologies 2021”

View full text Add to dashboard Cite

Methods of introduction of glyoxal-containing additives into foam concrete mixture

Cited by 5 publications

References 10 publications

Formation of porous structures in production technology of construction materials based on building gypsum plaster

Formation of porous structures in production technology of construction materials based on building gypsum plaster

Structural and heat insulating cement based concrete with complex glyoxal based additive

Construction and heat-insulating foam concrete with the use of drilling sludge

Contact Info

Product

Resources

About