Development of High-Volume High Temperature Fly Ash Concrete (HVFAC)

Author:

Hela Rudolf1,Bodnarova Lenka1

Affiliation:

1. Brno University of Technology

Abstract

To ensure sustainable concrete building industry it is necessary to decrease consumption of natural resources for manufacture of concrete and reduce content of CO2 produced during production of cement. This approach has not only ecological impact on future activities but it can also considerably reduce cost of concrete. In the Czech Republic, about 6.5 million tons of high quality fly ash is produced during classic high temperature combustion of anthracite or brown coal for production of electric energy. Fly ash produced in such way has high content of SiO2 and low content of CaO, and it is ranked among co-called siliceous fly ash, which has outstanding pozzolanic properties. This paper describes experience from experimental development of High Volume Fly Ash Concrete (HVFAC), where over 50% of fly ash is used as substitution of Portland cement for binder. High proportion of replaced Portland cement were tested in this research; impacts on strength of concrete at the age of 7 – 180 days, consistency of concrete and other related properties were observed.

Publisher

Trans Tech Publications, Ltd.

Reference14 articles.

1. ASTM C 618 – 08a Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, American Soc. Test. Mater. (2008).

2. EN 450-1. Fly ash for concrete - Part 1: Definition, specifications and conformity criteria, (2007).

3. Use of Fly Ash in Concrete, ACI 232. 2R-03. ACI COMMITTEE 232. (2003).

4. R. Hela, J. Marsalova and L. Bodnarova, Fly ashes thermal modification and their utilization in concrete, in: System-Based Vision For Strategic And Creative Design, edited by: Bontempi, F., 1-3 (2003) 1649-1653.

5. J. Zach, R. Hela and M. Sedlmajer, Development of thermal insulation plasters with utilization of by-products, in: 2nd International Conference on Waste Engineering Management, ICWEM 2010, 73 (2010) 288-296.

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Shrinkage Effects of Using Fly Ash instead of Fine Aggregate in Concrete Mixtures;Advances in Materials Science and Engineering;2020-04-09

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