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HELA, R. BODNÁROVÁ, L. RUNDT, L.
Original Title
Development of Ultra High Performance Concrete and Reactive Powder Concrete with Nanosilica
Type
journal article in Web of Science
Language
English
Original Abstract
The article is dedicated to the design and production of Ultra High Performance Concrete (UHPC) and Reactive The article is dedicated to the design and production of Ultra High Performance Concrete (UHPC) and Reactive Powder Concrete (RPC) using silica fume and nanosilica. Nanosilica and fine steel fibres were used for the production of RPC. Compressive strengths of UHPC and RPC above 150 MPa have been achieved. It has been demonstrated that UHPC and RPC can be produced using standard concrete mixing system without the use of activating mixing and without a special treatment regime during maturing of the concrete. Aging of the concrete took place in a normal environment, without elevated pressure or temperature. The aging process at 20 °C allows the use of UHPC and RPC for the ready-mixed concrete when working on high volume construction projects. Even without thermal treatment, without the application of solidification pressure and without autoclaving, RPC reached a compressive strength of more than 180 MPa and a flexural tensile strength after 60 days greater than 22 MPa. The high tensile bending strength may be considered as the main advantage of RPC, as the RPC parameters allow, for instance, the use for pre-stressed structural elements where a high initial strength is also required.
Keywords
Bending strength; Compressive strength; Concrete mixers; Concrete mixing; Ready mixed concrete; Shotcreting; Silica fume; Steel fibers; Tensile strength
Authors
HELA, R.; BODNÁROVÁ, L.; RUNDT, L.
Released
19. 6. 2018
Publisher
IOP Publishing
ISBN
1757-8981
Periodical
IOP Conference Series: Materials Science and Engineering
Year of study
371
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
Pages to
8
Pages count
URL
http://iopscience.iop.org/article/10.1088/1757-899X/371/1/012017
Full text in the Digital Library
http://hdl.handle.net/11012/137156
BibTex
@article{BUT149962, author="Rudolf {Hela} and Lenka {Bodnárová} and Lukáš {Rundt}", title="Development of Ultra High Performance Concrete and Reactive Powder Concrete with Nanosilica", journal="IOP Conference Series: Materials Science and Engineering", year="2018", volume="371", number="1", pages="1--8", doi="10.1088/1757-899X/371/1/012017", issn="1757-8981", url="http://iopscience.iop.org/article/10.1088/1757-899X/371/1/012017" }