The problem of production and sale of adulterated cement and risks associated with its use in the manufacture of concrete are considered. Comparative results of strength tests of concrete made with cement whose producer was named on the package, and with that by an unkn...
A description of mathematical models of grinding systems with barrel and tube ball mills operating in open and closed circuits with dust separators is given. The results of the design analysis of the structure and the efficiency of the separation on grinding performance...
The research in this article is focused on the first 24 hours of hydration of five commercially available Portland cements. Particular interest has been given to the so called induction or dormant period. The different cements have been analysed using isothermal calorim...
The use of nano-sized TiO2 in cement composites have became popular in last decades due to its ability to decompose organic compounds by photocatalytic reaction. The aim of this paper was to find the best way how to implement TiO2 into cement-based composite structure a...
The influence of mineral additives – waste ash and slag from Verkhnetagilskaya TPP and granulated blast furnace slag from OAO Nizhny Tagil Metallurgical Plant – on the properties of cement and concrete on its basis was examined. Laboratory studies and field tests showed...
The effect of the modifying sulfoaluminoferrite (SAF) additive on the composition and structure of the products formed in the process of hydrosilicate-producing hardening of porous autoclaved concrete was investigated. The possibility of intensification of cryst...
The advantages of building roads paved with concrete and modern materials for their repair are discussed. The latter are characterized by rapid hardening and satisfy other necessary requirements.
The standard problems arising during the operation of bag filters are discussed. It is shown that the problems may arise because of steel structure condition, cleaning environment, and bag condition. The optimum approach will be a comprehensive one that addresses all of...
The problems of the Russian cement market, which could be addressed with government regulation, are discussed. The possible regulatory measures and their possible results are considered.
On an example of a fictitious draft of a new dry process cement plant in Russia the factors affecting the competitiveness of the plant and the associated risks are examined. It is shown that, in addition to macroeconomic factors, the specific region of the plant locatio...
