Comparison of the effect of fiber reinforcement of various types on the properties of centrifuged and vibrated products from heavy concrete class B35

Abstract

Comparison of the effect of fiber reinforcement of various types on the properties of centrifuged and vibrated products from heavy concrete class B35

Stelmakh S.A., Shcherban E.M., Kholodnjak M.G., Nazhuev M.P., Taroyan A.G., Yanovskaya A.V.

Incoming article date: 24.09.2018

The scientific interest, which is represented by research for concretes differing in strength characteristics, is substantiated. A series of large-scale experimental studies has been carried out to establish the nature of the change in the properties of heavy concrete manufactured by various methods, depending on the reinforcement by different types of dispersed fibers. At this stage of the study, in order to systematize the accumulated experimental data, the authors molded and examined products made of concrete of class B35, manufactured by vibration and centrifugation, with subsequent reduction to uniformity for the convenience of an analytical comparison of the results obtained. The compressive strength and tensile strength, as well as their increments, depending on the type of reinforcing fiber-polypropylene, basalt or steel fiber, were studied. The influence on the properties of the investigated concrete of class B35 on the combination of various prescription and technological factors has been established.

Keywords: centrifuged concrete, vibrated concrete, thin-walled reinforced concrete products, fiber reinforcement, polypropylene fiber, basalt fiber, steel fiber, compressive strength, tensile strength