Abstract
The results of physico-chemical analysis using infrared spectroscopy, X-ray phase analysis and electron microscopy of the microstructure of cement stone and the processes of change: hydration, crystallization, etc. are presented. in cement systems, with the addition of new generation complex chemical additives of the Relaxol KDJ-3 series. It has been established that in cement systems these additives help create new formations that crystallize in a finely dispersed form, clog the pores and capillaries of Portland cement stone, compacting and strengthening its structure. The introduction of the KDJ-3 additive into expanded clay concrete compositions makes it possible to increase its density by 8-10% and strength by 40% compared to the design strength.
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