Journal of
Faculty of Civil Engineering

CONFERENCE PROCEEDINGS
8^th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2021 , 2021.y., pp. 3-12

	DOI: 10.14415/konferencijaGFS2021.01
	UDC: 666.972.12
	CC-BY-SA 4.0 license
	Author : Bujňák, Ján; Grzeszczyk, Stefania
	Summary:
	Reactive powder concrete (RPC), typically with higher compressive strength, is particularly attractive to structural engineers to apply them in infrastructures for enhancing their resistance under severe environments and loads. The main objective of the initial study presented in the paper is to investigate the behavior of two types of these new cementitious materials differing in the nature of microfibers. The RPC mixes were reinforced with steel and then with basalt microfibers. To evaluate the structural performance of developed unconventional materials, properties were investigated experimentally and compared with the control normal concrete mix. The high RPC strength may enable particularly effective joints in composite structures consisting of steel girders and precast concrete slabs. The investigation of such shear connection efficiency, using test specimens was also executed. Finite element numerical models were developed. The outputs of the studies are presented in the paper.
	Keywords:
	Reactive powder concrete ,material property tets, composite element, numerical modeling.