Design of High-Strength Concrete for Ready-Mixed Concrete Production

Abstract:

The high-strength concrete is a cement composite reaching high compressive strength, namely, pursuant to the legislation, higher than 60 MPa in the terms of cube compressive strength. The development of high-strength concretes exceeding 100 MPa is still an up-to-date issue and the production of these concretes is still limited only to a prefabrication. Contemporary construction industry and projecting activity have begun to focus on a construction of statically demanding buildings, which can include e.g. high-rise buildings. Such projecting often requires using of the state-of-the-art materials like cement composites with high mechanical parameters for construction of more subtle buildings. Within this article, the procedure of ready-mixed concretes development with the compressive strength around 100 MPa designed according to a project documentation for actual construction of high-rise building with the height up to 160 meters and 46 floors is described, together with the influence of the aggregate on the resulting composite strength.

• Periodical: Solid State Phenomena (Volume 325)
• Pages: 113-118
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.325.113
• Online since: October 2021
• Authors: Martin Ťažký*, Klára Křížová
• Keywords: Cement Composite, High-Strength Concrete (HSC), Silica Fume, Workability

References

[1] EN 206+A1. Concrete: Specification, performance, production and conformity. (2018).

[2] NAGATAKI, S., High-Strength Concrete in Japan: History and Progress, Symposium paper, Volume 167, 1997, Pages 1-26.

[3] NORMAL CONCRETE VS HIGH-STRENGTH CONCRETE PROPERTIES AND DIFFERENCES. Q Green Tech [online]. 1-5 [cit. 2020-10-02]. Available from: https://qgreentech.com/normal-concrete-vs-high-strength-concrete/.

DOI: 10.14359/6284

[4] ROSS, F., F. SCHROETER a M. BUONOMO. Das grosse Viadukt von Millau - Stahlbau und Montage mit hochfesten Feinkornbaustaehlen / The Millau Viaduct - Steel construction, fabrication and erection with high-strength fine grain steel. Stahlbau. 2010, 5(74), 313-318.

DOI: 10.1002/stab.200590060

[5] HAJAR, Z., T. THIBAUX, A. SIMON a P. WYNIECKI. Construction of an Ultra-High-Performance Fibre-Reinforced Concrete thin-shell structure over the Millau Viaduct toll gates. Concrete Structures. 2004, 236-237.

[6] KOBZA, J. Viadukt Millau – concept and implementation of the project. ASB-portal [online]. 2008, (Civil engineering - bridges) [cit. 2020-10-02]. Available from: https://www.asb-portal.cz/stavebnictvi/inzenyrske-stavby/mosty/viadukt-millau-koncepce-a-realizace-projektu (in Czech).

[7] VITEK, J. L.; BROZ, R.; KOUKOLIK P. and TVRZ, A. Construction of the new Troja bridge with focus on concrete structures. Concrete TKS: Bridge and transportation construtcion. 2013, 2013(4), 32-42. (in Czech).

[8] Eurovea Tower. Eurovea Tower [online]. Bratislava, 2020 [cit. 2020-10-02]. Available from: https://euroveatower.com/.

[9] TAZKY, M.; HELA, R., Development of structural concrete with fly ash - mixing of different particle-size fractions of fly ash and cement, Fly ash - properties, analysis and performance, ISBN 9781536105162, Nova Publisher, Inc., New York, USA, (2017).

DOI: 10.1201/9781482267051-8

[10] A. ELSHARIEF, M. D. COHEN, J. OLEK, Influence of aggregate size, water cement ratio and age on the microstructure of the interfacial transition zone, Cement and Concrete Research, Volume 33, Issue 11, 2003, Pages 1837-1849, ISSN 0008-8846.

DOI: 10.1016/s0008-8846(03)00205-9

[11] Factors Effecting Strength of Concrete. The Conscructor: Civil Engineering Home [online]. 2014 [cit. 2020-10-02]. Available from: https://theconstructor.org/concrete/factors-affecting-strength-of-concrete/6220/.

[12] EN 12350-2. Testing fresh concrete - Part 2: Slump-test, (2019).