Sulfoaluminate Cements Composition and Properties

Abstract

The chemical and mineral composition, physico-mechanical properties of sulfoaluminate cements of various classes of strength manufactured in China which are used in Russia to build and repair buildings and structures have been considered. It is shown that the sample sulfoaluminate cement depending on the strength class differ not only in chemical and mineral compositions, but also in their hydrophysical properties, kinetics of dissipation and hardening of cement, and hydration products. It is established that with the increasing strength class of the cement content it has calcium increases, the adhesion of the cement paste is slowed down, the duration of heat dissipation increases, the temperature dissipation is reduced, the hardening of the cement stone slows down.

Mechanical and Microstructural Characteristics of Calcium Sulfoaluminate Cement Exposed to Early-Age Carbonation Curing

“…It is often used in emergency repair projects, such as joints, leak plugging, bolt-shotcrete, and emergency repair of aircraft runways, etc. However, in some special cases, such as winter construction or special materials in some engineering parts, the requirements for the hydration and hardening speed and early strength of CSA cement are higher [24,25]. Deng studied the influence of different anions of three soluble lithium compounds (Li 2 CO 3 , Li 2 SO 4 , and LiCl) on the hydration properties of CSA cement and revealed the mechanism of the accelerating effect of lithium compounds, providing support for the application of different lithium compounds in CSA cement [26].…”