Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range of fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. The synthesized composites included the composite binder made...

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Autores principales:	Roman Fediuk, Mugahed Amran, Sergey Klyuev, Aleksandr Klyuev
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fiber concrete cement composite dynamic strength impact strength Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999
Acceso en línea:	https://doaj.org/article/6d3b99371ce447ac9bde978bf8a4a9df
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spelling	oai:doaj.org-article:6d3b99371ce447ac9bde978bf8a4a9df2021-11-25T17:31:13ZIncreasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities10.3390/fib91100642079-6439https://doaj.org/article/6d3b99371ce447ac9bde978bf8a4a9df2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6439/9/11/64https://doaj.org/toc/2079-6439The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range of fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. The synthesized composites included the composite binder made of Portland cement, silica, and carbonate additives. Basalt and steel were used as fibers. The nature of the influence of the composition and manufacturing technology of cement composites on the dynamic hardening coefficient has been established, while the growth of these indicators is achieved by creating a denser interfacial transition zone between the cement paste, aggregate, and fiber as a result of improving the homogeneity of the concrete mixture and controlling the consistency. Workability indicators (slump flow up to 730 mm; spreading time up to a diameter of 50 cm is up to 3 s) allow them to be classified as self-compacting concrete mixtures. An increase in the values of the impact strength coefficient by a factor of 5.5, the dynamic hardening coefficient by almost 70% as a result of interfacial interaction between fibers and binder matrix in the concrete composite, as well as absorption of impact energy by fiber, was revealed. The formula describing the effect of the loading rate on the coefficient of dynamic hardening of fiber-reinforced concrete has been refined. The fracture processes of the obtained materials have been established: after the initiation of primary cracks, the structure of the composite absorbs impact energy for a long time, while in the inelastic range (the onset of cracking and peak loads), a large number of secondary cracks appear.Roman FediukMugahed AmranSergey KlyuevAleksandr KlyuevMDPI AGarticlefiber concretecement compositedynamic strengthimpact strengthChemicals: Manufacture, use, etc.TP200-248Textile bleaching, dyeing, printing, etc.TP890-933Biology (General)QH301-705.5PhysicsQC1-999ENFibers, Vol 9, Iss 64, p 64 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fiber concrete cement composite dynamic strength impact strength Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999
spellingShingle	fiber concrete cement composite dynamic strength impact strength Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999 Roman Fediuk Mugahed Amran Sergey Klyuev Aleksandr Klyuev Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
description	The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range of fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. The synthesized composites included the composite binder made of Portland cement, silica, and carbonate additives. Basalt and steel were used as fibers. The nature of the influence of the composition and manufacturing technology of cement composites on the dynamic hardening coefficient has been established, while the growth of these indicators is achieved by creating a denser interfacial transition zone between the cement paste, aggregate, and fiber as a result of improving the homogeneity of the concrete mixture and controlling the consistency. Workability indicators (slump flow up to 730 mm; spreading time up to a diameter of 50 cm is up to 3 s) allow them to be classified as self-compacting concrete mixtures. An increase in the values of the impact strength coefficient by a factor of 5.5, the dynamic hardening coefficient by almost 70% as a result of interfacial interaction between fibers and binder matrix in the concrete composite, as well as absorption of impact energy by fiber, was revealed. The formula describing the effect of the loading rate on the coefficient of dynamic hardening of fiber-reinforced concrete has been refined. The fracture processes of the obtained materials have been established: after the initiation of primary cracks, the structure of the composite absorbs impact energy for a long time, while in the inelastic range (the onset of cracking and peak loads), a large number of secondary cracks appear.
format	article
author	Roman Fediuk Mugahed Amran Sergey Klyuev Aleksandr Klyuev
author_facet	Roman Fediuk Mugahed Amran Sergey Klyuev Aleksandr Klyuev
author_sort	Roman Fediuk
title	Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
title_short	Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
title_full	Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
title_fullStr	Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
title_full_unstemmed	Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities
title_sort	increasing the performance of a fiber-reinforced concrete for protective facilities
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6d3b99371ce447ac9bde978bf8a4a9df
work_keys_str_mv	AT romanfediuk increasingtheperformanceofafiberreinforcedconcreteforprotectivefacilities AT mugahedamran increasingtheperformanceofafiberreinforcedconcreteforprotectivefacilities AT sergeyklyuev increasingtheperformanceofafiberreinforcedconcreteforprotectivefacilities AT aleksandrklyuev increasingtheperformanceofafiberreinforcedconcreteforprotectivefacilities
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Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

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