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HomeMaterials Science ForumMaterials Science Forum Vol. 931Theoretical and Practical Aspects of the Formation...

Theoretical and Practical Aspects of the Formation of the Variational Structure of Centrifuged Products from Heavy Concrete

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Abstract:

Viability of further research of variatropy is justified, as well as its extended use with the purpose of increasing quality of ferroconcrete building constructions. Raw components and equipment used for manufacturing of centrifuged products and variatropic objects are described. Laboratory centrifuge equipped with a direct current engine and thyristor units has been developed and used. Method of applying pressure to a unit mass during centrifuging has been studied. It has been identified that in order for mix particles rising to their most superior position to stick to the mold walls, it is necessary that gravitational force of mg particle and centrifugal force are equal. Effect of hydrodynamic pressure on particles constituting concrete mix has been studied using several formulas and provisions. It has been revealed that centrifugal molding may be used to seal low-viscosity plastic mixes; however, its use causes disintegration of concrete mix. In order to slow down this process, it is necessary to increase viscosity of the entire system and restrict the upper limit of aggregate fineness.

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Materials and Technologies in Construction and Architecture

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Periodical:

Materials Science Forum (Volume 931)

Pages:

502-507

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.931.502

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Online since:

September 2018

Authors:

Sergey Stel'makh, Evgeniy Shcherban'*, Anatoliy I. Shuyskiy, Mukhuma P. Nazhuev

Keywords:

Annular Section Sample, Cement Paste, Centrifugal Force, Centrifugation, Centrifuged Column, Newly Formed Centrifuged Concrete, Variatropic Products, Variatropic Products of Non-Permanent Structure, Variatropy

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