Tehnički vjesnik, Vol. 27 No. 6, 2020.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20200630163212
Determination of Optimal Fibre Reinforcement Parameters for Self-Compacting Concretes
Daniyar Akhmetov
; NIISTROMPROJECT, LLP, Almaty, Radostovec str.,152/6, office109, 110, 050000, Almaty, Kazakhstan
Aleksej Aniskin
; Department of Civil Engineering, University North, Jurja Križanića 31b, 42000 Varaždin, Croatia
Yelbek Utepov*
orcid.org/0000-0001-6723-175X
; Department of Civil Engineering, L.N. Gumilyov Eurasian National University, Satpayev Str., 2, 010008, Nur-Sultan, Kazakhstan
Yelena Root
; NIISTROMPROJECT, LLP, Almaty, Radostovec str.,152/6, office109, 110, 050000, Almaty, Kazakhstan
Goran Kozina
; University North, Jurja Križanića 31b, 42000 Varaždin, Croatia
Sažetak
The article presents the results of the conducted study of the possibility and expediency of disperse reinforcement of self-compacting concrete (SCC) in order to improve the physical and technical indicators and the analysis of deformative properties of SCC using fiber. For satisfaction of requests from factories-manufacturers of SCC concerning the improvement of physical-mechanical and operational properties of SCC and identification of basic dependences that can be used by them in change of technological regulations for this type of concrete, theoretical and empirical methods of research were used. The results of these studies indicate that the introduction of a certain amount of polypropylene fiber improves the physical-technical and deformation characteristics of the operating SCC compounds, increasing the bending strength and reducing the size of shrinkage deformations. The efficiency of bulk fibre reinforcement with low-modulus polypropylene fibre of SCC mixtures has been experimentally proven in production. From the deduced mathematical dependences practical recommendations on an optimum choice of the sizes and the fibre content in SCC mixtures are proposed to obtain an optimum price-quality ratio, particularly when performing concrete works in summer time.
Ključne riječi
bending strength; deformation; mathematical modeling; polypropylene fiber; self-compacting concrete
Hrčak ID:
248250
URI
Datum izdavanja:
19.12.2020.
Posjeta: 1.004 *