- 21. Comparative study of respirator protective efficiency in laboratory and in production environment
- (Environmental safety, labour protection)
- ... dust content rises because of sharp reduction of the size of filter pore spaces caused by deposition of coarse particles of coal dust between the fibers, breathing resistance increase and additional dust ...
- Created on 21 March 2014
- 22. Investigation of reinforced cement stone cracking resistance for casing oil and gas wells
- (Mining)
- ... the cracking resistance factor should be more than 1.1. To achieve this value some organic fiber should be added to the slurry. It allows us to increase the strength of the cement stone 2–2.5 times as ...
- Created on 21 March 2014
- 23. Theory of calculation of concrete-filled-steel-tube (CFST) of mining support
- (Mining)
- ... main characteristic feature of the method is consideration of different types of stress-strain state of the steel and concrete in CFST depending on the limit states of the fibers of the steel container. ...
- Created on 16 April 2013
- 24. Prospects of application and constructive features of rubber-air reinforced lining
- (Mining)
- ... доступа: http://gorteh.ru/dir/136. OOO “GorTekh”, (2011), “ASVSH Fiberglass anchor type”, available at: http://gorteh.ru/dir/136 (accessed October 10, 2011). 3. ТОО СП „Минова Казахстан“. ...
- Created on 26 February 2013
- 25. Research of the electret effect on the fibers of the polypropylene filtering materials
- (Environmental safety, labour protection)
- Authors: S.I. Cheberiachko, D.I. Radchuk The problem of workers' respiratory organs defense from aerosols is considered. It is certain that for the effective defense it ...
- Created on 05 January 2013
- 26. Laboratory research of deformation characteristics of fibrous concrete made of rigid and winding polymer reinforcing fiber
- (Mining)
- Authors: V.V. Kovalenko The article presents results of laboratory tests of fiber-reinforced concrete specimens with rigid and winding fibers inside. The tests have been ...
- Created on 05 January 2013
- 27. Study of efficiency of recovered fiber concrete at various reinforcement fibers
- (Mining)
- Authors: V.V. Kovalenko The article presents results of laboratory tests of recovered fiber-reinforced concrete specimens. A comparative analysis of the nature of the specimens ...
- Created on 04 January 2013
- 28. To the question of respirator “lepestok” design modernization
- (Mining aerology)
- Authors: D.I. Radchuk, L.N. Cheberiachko. The problem of adaption of respirators, produced in Ukraine, to new European standards has been considered. The main differences in test ...
- Created on 25 December 2012
- 29. Study of the filler size influence on bending strength of fiber-reinforced concrete
- (Mining)
- ... studies is fulfilled. The influence of silica microparticles as a mineral additive on the strength properties of fiber-reinforced concrete specimens is shown. References: 1. Будівельне матеріалознавство: ...
- Created on 20 November 2012