About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Evgeny G. Gulyakov, engineer, Kazan State University of Architecture and Engineering, Kazan, Russian Federation. Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-7065-8022 Vadim G. Khozin, doctor of technical sciences, professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation. Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0003-0874-316X Igor V. Borovskikh, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation. Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0003-1223-3138 Roman V. Kropachev, Chief Technology Officer, PrintPro Homes LLC, Florida, The United States of America Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0009-0006-0455-9938 |
| Title of the article | Nanomodification of high-strength low water demand cements with silica sol and graphene nanoplatelets |
| Abstract. | Problem statement. A promising approach to improving the properties of cementitious materials is their nanomodification, which is often complicated by achieving maximum homogenization of nanoscale particles within the bulk of the base material. Traditional methods of mixing components do not always ensure uniform distribution of nanomodifiers within the mixture. A much more effective approach is co-milling, which underlies the production of low water demand cements. The well-known effect of particle disaggregation during the mechanical, “forced” application of a plasticizer to the surface of cement grains promotes uniform distribution of nanoscale modifiers. Silica sol (silicon dioxide hydrosol) and graphene powder, consisting of graphene nanoplatelets, are known for their positive effects on cementitious materials, making nanomodification of highly dispersed low water demand cements relevant for the creation of high-strength and ultra-high performance concretes. The purpose of this study is to modify low water demand cements with silica sol and graphene nanoplatelets and determine their effect on the properties of cement paste and cement stone. To achieve this, the following tasks are solved: analyzing the particle size distribution of the starting components, producing highly dispersed low water demand cements with nanoscale additives, and assessing the grindability of the starting Portland cement, the normal consistency of the cement paste, and the strength of the cement stone. Results. The analysis of the particle size distribution of the starting components allowed us to determine its effect on the grindability of Portland cement and the normal consistency of the resulting low water demand cements. The concentration dependences of the strength of the cement stone on the nanomodifier content were determined. Conclusions. The use of silica sol has virtually no effect on the specific surface area or normal consistency of the resulting low water demand cements. A decrease in grindability was observed with increasing concentration of graphene nanoplatelets, the dispersed composition of which consists of agglomerates of particles that are not disaggregated during ultrasonic treatment. Both modifiers can increase the strength of cement stone – the greatest effect was achieved with 0.03% graphene nanoplatelets and 0.005% silica sol, the use of which generally showed the best results. |
| Keywords. | nanomodification, low water demand cements, silica sol, graphene nanoplatelets |
| For citations: | Gulyakov E.G., Khozin V.G., Borovskikh I.V., Kropachev R.V. Nanomodification of high-strength low water demand cements with silica sol and graphene nanoplatelets // News of KSUAE, 2026, № 1(75), pс. 51-63, DOI: 10.48612/NewsKSUAE/75.5, EDN: EKANHZ |
