Evaluation of the Influence of Ultradisperse Dust and Carbon Nanostructures on the Structure and Properties of Gypsum Binders

Researching of the Water Resistance of Hydrophobized Tongue-and-Groove Gypsum Slabs

“…The dispersion analysis of the additive showed that the average size of particles is 20-30 microns. X-ray phase analysis of metallurgical dust showed that the highest intensity peaks on the X-ray correspond to iron (II, III) oxide and calcium hydroxide Ca(OH) 2 which indicates their significant content in the additive [14]. On the metallurgical dust amount accumulating in the metallurgical process can be judged according to metallurgical plant OAO "Tulachermet" data corresponding to 98,2 thousand tons in 2005.…”

“…There are some ways to protect the gypsum structure from aggressive environment attack -the use of carbon nanotubes in combination with ultra-dispersed additives which leads to deeper changes in the structure of hardened gypsum [14]. Modifying binding matrices with multi-walled carbon nanotubes dispersions (MWCNTs) improves the physical and mechanical characteristics of gypsum composites due to the structuring of new formations whose morphology depends primarily on the degree of the uniform distribution of carbon nanotubes in the binder matrix.…”

Modelling the Mechanism of Mineral-Binders’ Hydration Processes in a Macro–Micro–Nanosystem

“…The rate of solubility of calcium sulphate hemihydrate (CaSO 4 •0.5H 2 O) depends on its properties and adheres to the diffusion rules as follows [21,22]:…”

To the question of improvement of structural characteristics the gypsum materials on the basis of technogenic waste

“…Одним из перспективных способов модифицирования структуры гипсового камня является использование минеральных и химических добавок различной природы [6,7,8,9]. Введение добавок пластификаторов и суперпластификаторов в состав сырьевых смесей позволяет снизить водогипсовое отношение и тем самым повысить прочностные характеристики.…”