AbstractAbout AuthorsReferences
Low water requirement cements (LWRC) are a new type of hydraulic cements obtained by co-grinding of Portland cement clinker, gypsum and water reducing agent (plasticizer). During the grinding, in the process of interaction between clinker minerals and water reducing agent, cement acquires specific properties, which distinguish it from ordinary Portland cement. Obtaining of low water requirement cement in centrifugal impact mill is accompanied by mechanical activation of milled components and realization of its reaction with water solution of polycarboxylate plasticizer. LWRC is characterized by narrow particle size distribution, regular shape and large concentration of defects on which plasticizer can be «inoculated», are typical for particles. Nanostructured plasticizer layer is formed by mechanism of molecular layering on the surface of cement particle. Obtained in centrifugal impact mill low water requirement cements with different material composition has an active from 42 MPa (LWRC 50) to 73 MPa (LWRC 100). On a base this cements heavy concretes with strength class of 50 and higher, with cement consumption per unit of strength up to 8,3 kg/MPa, and frost resistance class over 500 were made.
M.S. GARKAVI1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.V. ARTAMONOV1, Candidate of Sciences (Engineering)
E.V. KOLODEZHNAYA1, Candidate of Sciences (Engineering)
A.V. PURSHEVA1, Engineer
M.A. AKHMETZYANOVA1, Engineer
E.A.KHUDOVEKOVA2, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.V. ARTAMONOV1, Candidate of Sciences (Engineering)
E.V. KOLODEZHNAYA1, Candidate of Sciences (Engineering)
A.V. PURSHEVA1, Engineer
M.A. AKHMETZYANOVA1, Engineer
E.A.KHUDOVEKOVA2, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
1 «Ural-Omega», OOO (89, Building 7, Lenin Avenue, Magnitogorsk, 455037, Russian Federation)
2 «Evrosintez» OOO (1a, Stepnaya Street, Magnitogorsk, 455000, Russian Federation)
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12. Slyusar A.A., Poluektova V.A., Mukhacheva V.D. Concrete on the basis of a binder of low water demand and modifier SB-FF. Stroitel’nye Materialy [Construction Materials]. 2009. No. 9, pp. 65–67.
2. Khozin V.G., Khokhryakov O.V., Sibgatullin I.R., Gizzatullin A.R., Kharchenko I.Y. Carbonate cements of low water-need is a green alternative for cement industry of Russia. Stroitel’nye Materialy [Construction Materials]. 2014. No. 5, pp. 76–82. (In Russian).
3. Avvakumov E.G., Gusev A.A, Mekhanicheskie metody aktivatsii v pererabotke prirodnogo i tekhnogennogo syr’ya. [Mechanical activation in processing of natural and industrial raw materials]. Novosibirsk: Academic press “Geo”. 2009. 155 p.
4. Khudyakova L.I., Voiloshnikov O.V., Kotova I.Y. Influence of mechanical activation on process of formation and properties of composite binding materials. Stroitel’nye Materialy [Construction Materials]. 2015. No. 3, pp. 37–39. (In Russian).
5. Khripacheva I.S., Garkavi M.S., Artamonova A.V., Voronin K.M., Artamonov A.V. Centrifugally-grinding cements. Tsement i ego primenenie. 2013. No. 4, pp. 106–109.
6. Butyagin P.Yu., Streletskii A.N. Kinetics and energy balance in mechanochemical transformations. Fizika tverdogo tela. 2005. No. 5, pp. 830–836. (In Russian).
7. Malugin A.A., Nanotechnology of molecular layering. Rossiiskie nanotekhnologii. 2007. No. 3–4, pp. 87–100. (In Russian).
8. Garkavi M.S., Artamonov A.V., Kolodezhnaya E.V., Nefedev A.P., Khudovekova E.A., Buryanov A.F., Fisher H.-B. Activated fillers for gypsum and anhydrite mixes. Stroitel’nye Materialy [Construction Materials]. 2018. No. 8, pp. 14–17. DOI: https://doi.org/10.31659/0585-430X-2018-762-8-14-17 (In Russian).
9. Nesvetaev G.V., Kardumyan G.S. About rational application of additives to concrete at large-panel prefabrication plants. Stroitel’nye Materialy [Construction Materials]. 2016. No. 3, pp. 31–35. (In Russian).
10. Nesvetaev G.V. Self-compacting technology of concretes. Stroitel’nye Materialy [Construction Materials]. 2008. No. 3, pp. 24–27. (In Russian).
11. Bazhenov Yu.M. Ways of development of building materials: new concretes. Tekhnologii betonov. 2012. No. 3–4, pp. 39–42. (In Russian).
12. Slyusar A.A., Poluektova V.A., Mukhacheva V.D. Concrete on the basis of a binder of low water demand and modifier SB-FF. Stroitel’nye Materialy [Construction Materials]. 2009. No. 9, pp. 65–67.
For citation: Garkavi M.S., Artamonov A.V., Kolodezhnaya E.V., Pursheva A.V., Akhmetzyanova M.A., Khudovekova E.A. Low water requirement cements of centrifugal impact grinding. Stroitel’nye Materialy [Construction Materials]. 2019. No. 1–2, pp. 23–27. DOI: https://doi.org/10.31659/0585-430X-2019-767-1-2-23-27 (In Russian).