TESTING’s equipment for education laboratory

St. Petersburg Technological Institute (Technical University) was presented with a gift of the equipment for modern teaching and practical laboratory from TESTING company, Germany.

Methods to determine fineness and grindability

The methods for determination of the cement grindability and fineness have been described. Fineness is to be expressed through surface area or particle size distribution. Three methods for determination of grindability are given – those by Zeisel, Bond and Hardgrove. Th...

Removal of building-ups in cyclone heat exchangers

The article considers the problem of build-ups on the working surface of refractory linings in the cyclone preheaters. The methods of eliminating this phenomenon through use of the special refractory materials by Höganäs Bjuf AB are proposed.

Synthesis and hydration of tricalcium silicate

During the last few years several computer models has been developed to simulate the evolution of cement microstructure during hydration. In the model, µic, that is been developed in our laboratory the evolution of the microstructure of cement and its main component, al...

Microstructure of composite cements.

The microstructure of hydration products of composite cement containing as mineral additives granulated blast-furnace slag (10%), flask (5%) and limestone (10%) was investigated. The data on morphology and chemical composition of the ...

Ways of increasing strength characteristics features of the Portland cement.

It Is shown that increasing strength characteristics features of the portland cement by possible way to activations raw materials of charge in mode triboelectricity formation formations gas-and-dust "plasmas" and using as additives-filler synthetic wollastonit...

Formation of composition and structure of products hydrosilicate hardening in the presence of sulfomine¬ral additives.

The results of research on optimization of the composition of sulfomineral additives and their influence on the formation of composition, structure and basic physical and mechanical properties of autoclaved lightweight concrete were given. The possibility of the task-or...

The cement sustainability initiative: focus on safety

The activities of the organization “Initiative for sustainable development of cement production” (CSI) in the region of the health and safety protection in the cement industry are considered. The effective systems of measurement, monitoring and reporting on meas...

Symposium of Loesche 2010.

The article presents information on the symposium organised by Loesche GmbH – one of the leading suppliers of the vertical mills and grinding plants for the cement sector– in Duesseldorf, Germany, on 9-10 September of 2010. A review of the presentations made at the symp...

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