Intensification of loosening of asbestos fibers by means of hydromechanical processing

O.M. Obodovich; O.M. Nedbailo; O.G. Chernyshyn; A.E. Nedbailo

doi:10.26909/csl.1.2021.4

O.M. Obodovich Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0003-2230-1034
O.M. Nedbailo Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0003-1416-9651
O.G. Chernyshyn The State Enterprise "Engineering Center "Drying”" Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0001-7702-894X
A.E. Nedbailo Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0002-8590-5823

DOI: https://doi.org/10.26909/csl.1.2021.4

Keywords:
asbestos-cement, loosening of asbestos fibers, mixture of asbestos water portland cement

Abstract

Acceptance of high-quality aqueous suspensions based on chrysotile asbestos is an urgent technical task in a number of industries. Asbestos-cement mortar is used as an asbestos-cement crust for insulation of walls and other building surfaces, due to this composition of the treated surfaces perfectly retain heat, resistant to moisture, and most importantly - asbestos fibers contribute to the smoothness of the surface and crack is not formed. No less popular is the use of asbestos-cement mortar with a high content of asbestos in the insulation of ventilation ducts and pipelines. This composition of asbestos-cement mortar is used to strengthen the joints of asbestos-cement pipes, as well as as a filler in the laying of cast iron pipes to give the joints additional elasticity.

Asbestos-cement mortar has plasticity, resistance to stretching and reinforcement of asbestos, as well as strength and versatility in the use of cement. Due to these properties, asbestos and cement perfectly adhere to each other to obtain a durable, strong, frost-resistant, virtually waterproof and fire-resistant building material.

The result of the microscopic examination is reason to believe that from the technological process of production of slate can be removed electromechanical mixer for the preparation of a solution of asbestos + water + portland cement. In this case, given the fact of continued loosening of asbestos in the preparation of the mold mixture of asbestos + water + portland cement, it will be sufficient to ensure the degree of loosening of asbestos in the ripper at the minimum required level (for example, not more than 85%). It is assumed to obtain a mold mixture with a high degree of homogeneity of the components with reduced costs of Portland cement due to its physico-chemical activation by hydraulic fluxes.

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