Plasticization of mixtures based on oxychloride cement using additives

Abstract

Plasticization of mixtures based on oxychloride cement using additives

Chernykh T.N., Ulrikh D.V., Kriushin M.V.

Incoming article date: 27.10.2021

The problem of maintaining the exact ratio between the components in mixtures based on oxychloride cement is described. This problem is solved by the use of additives plasticizing or water-reducing action. The results of studying the effect of the type of additives on the mobility of mixtures and the strength of hardened oxychloride cement pastes are presented. The positive effect of the use of additives based on naphthalene and melamine sulfoformaldehyde was shown. The negative effect of additives based on lignosulfonates on the strength of oxychloride cement pastes has been established. Assumptions about the reasons for the low efficiency of additives based on polycarboxylate esters are indicated. The positive influence of the plasticizing effect of additives on the homogeneity of the microstructure of oxychloride cement pastes is shown. An assumption about the reasons for the increase in strength when using additives based on naphthalene and melamine sulfoformaldehyde is made.

Keywords: oxychloride cement, Sorel cement, plasticizer, water reduction, additive, modification, structure, strength