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8. МЕЂУНАРОДНЕ КОНФЕРЕНЦИЈЕ
САВРЕМЕНА ДОСТИГНУЋА У ГРАЂЕВИНАРСТВУ 2021 , 2021.год., стр. 3-12


REACTIVE POWDER CONCRETE AND ITS APPLICATION IN COMPOSITE STRUCTURES
 
DOI: 10.14415/konferencijaGFS2021.01
UDK: 666.972.12
CC-BY-SA 4.0 license
Аутор : Bujňák, Ján; Grzeszczyk, Stefania
 
 Резиме:
 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.
 
 Кључне речи:
 Reactive powder concrete ,material property tets, composite element, numerical modeling.