Prescription and technological aspects of obtaining high-quality centrifuged concrete

Abstract

Prescription and technological aspects of obtaining high-quality centrifuged concrete

Chernil'nik A.A., Shcherban' E.M., Stel'makh S.A., Cheburakov S.V., El'shaeva D.M., Dotsenko N.A.

Incoming article date: 24.01.2019

The possibility of creating centrifuged products of an annular cross section with a variotropic structure due to the introduction of a porous aggregate is considered. Various methods of introducing coarse aggregate have been studied in order to increase the uniformity of the physicomechanical properties of centrifuged products. The study examines the effect of various types of fiber fibers on the physicomechanical properties of centrifuged concrete. The results of physical and mechanical tests of fiber-reinforced concrete showed that the greatest effect on compressive strength is achieved with the introduction of a metal fiber into the composition. At the same time, shrinkage deformations are lower by 20% in the composition with basalt fiber as compared with the control fiber. Studied recipe-technological techniques have proven their effectiveness and can be successfully applied in construction practice.

Keywords: centrifuged concrete, fiber, fiber concrete, coarse aggregate, porous aggregate, variotropic structure