«Belgorkhimprom» JSC (Minsk, Republic of Belarus):

Grechko A. M., Deputy Chief Executive Officer on Scientific Work, Candidate of Geological and Mineralogical Sciences, phone: +375(17)334-74-94

Katsemba S. N., Chief Specialist

Bogdan S. I., Deputy Head of Department, Candidate of Engineering Sciences, phone:

+375 (17) 334-86-01

Institute for Nature Management of National Academy of Sciences of Republic of Belarus (Minsk, Republic of Belarus:

Pashkevich V. I., Leading Researcher, Candidate of Geological and Mineralogical Sciences

Pashkevich N. N., Leading Engineer, phone: +375 (17) 267-26-32

According to results of researches, there was founded the presence of various types and grades of aggressiveness of underground and void waters by whole geological section of rocks of designed shafts at Garlyk potassium salts deposit with common trend of aggressiveness' growth with depth. According to this, there is recommended the choice of cement and concrete, taking into account the hydrochemical parameters of aggressiveness of «water-medium» system during the designing and construction of shafts, for the purpose of avoiding of emergency situations, connected with crumbling and destruction of concrete, its blowout, corrosion etc. In the time of definition of any type and rate of aggressiveness at least by one criterion (chemical component), the water resistance of concrete should be provided by following special measures: choice of appropriate cement, according to the Construction Directives and Rules; hydroisolation; usage of protective covers; decreasing of the grade of water aggressiveness etc.

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