The article examines the factors of aggressive action on refractory lining if alternative fuels are used. The basic approach to the development of unshaped refractory materials for the cement industry and a concept of their use in aggressive environments are described. ...
An increasing number of cement companies in Russia practices preventive maintenance. In these circumstances, the Danish company FLSmidth which has a developed network of service units is ready to offer their knowledge and experience providing services in inexpensive rep...
The paper describes a fundamentally new method for improving performance reliability of rotary cement kilns. The Hot Alignment represents a set of diagnostic and control operations carried out without shutting down and unloading the kiln, i.e. when it is hot. The result...
| Author: A.B. Goncharov, I.M. Tynnikov, A.B. Tulinov |
| Section: Control of production |
| Keywords: diagnostics, rotary kiln, tires, rollers, thrust rollers, hot alignment, shell, girth gear, mechanical adjustment |
The paper discusses the effect of cements’ properties on the processing characteristics of concrete mixtures and construction and engineering properties of concrete. According to the author, today the only real way to overcome the negative impact of fluctuations in the ...
The differences between the new version of GOST 10060-2012 and the 1995 version are described. The new requirements for testing the frost resistance of concrete are set out. It is shown that the technical characteristics of climatic chambers from German BINDER comply wi...
The ability of aluminium compounds (amorphous Al(OH)3, aluminium sulphate and basic aluminium sulphate) to inhibit destructive alkali-silica reactions in Portland cement mortars. These compounds, in the same dosage in terms of Al2O3, can be arranged in t...
| Author: A.S. Brykov, A.V. Anisimova, N.S. Rozenkova |
| Section: Science and production |
| Keywords: aluminum hydroxide, aluminum sulphate, basic aluminum sulphate, alkali-silica reaction, mitigation, Portland cement, concrete, water-reducing admixtures, superplasticizers |
The possibility of producing cement clinker with a full or partial replacement of natural raw materials with industrial wastes - carbide powder lime, phosphorus and blast furnace slag, ash and slag is established. The possibility of developing a resource and energy savi...
The influence of pozzolanic additives in concrete (fly ash and metakaolin) on the damaging alkali silica reaction in concrete with external alkali input is ex-amined. Concretes containing a reactive filler (greywacke) were subjected to a periodic action ...
Indoor concrete is incompletely carbonated. The grade of carbonation is less than 50 %. The rate of carbonation in old concrete is very slow.
The paper offers recommendations on obtaining concrete for precast concrete structures using low-temperature steam curing (with a temperature of isothermal curing under 60°C), which include the use of modern modifying additives, purposeful choice of cement and t...
