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The paper provides research results on obtaining a compositional CLWD with the use of ashes from the Novo-Irkutsk Thermal Power Station and magnesites of the Savinsk deposit of the Irkutsk area. The aim of the research is to develop an effective ecological technology for producing high-quality cements. As a result of the research, the technological and physical-mechanical properties of the cement paste and cement stone were determined. The cement ND changes depending on the composition (12 to 19%), while the cement stone’s strength varies from 49.5 MPa to 77.7 MPa. The CLWD strength (of different grades according to GOST 310.4) is estimated in 1 day, 28 days, and after steaming. A comparison with ordinary Portland cement was made. It is established that the CLWD 50 (has 50% of fillers) is not inferior in its physico-mechanical properties to ordinary Portland cement. A regression analysis of the influence of a number of factors on the strength of CLWD at three time periods (1 day, 28 days, and after steaming) was carried out. The regression equation was also obtained.

Cements of low water demand is the flagship of composite low clinker cement binders in Russia and abroad