Concrete with Fluidized Bed Combustion Fly Ash Based Light Weight Aggregate

Abstract:

Conventional high temperature fly ash has been used for manufacturing of construction materials, concrete in particular, for quite a long time. Fluidized bed combustion fly ash, however, has little use in this area, mainly for its chemical composition and morphology. Current efforts are directed towards the development of new technological processes and building materials that would allow the use of this industrial waste and its qualities. One possible way of fluidized bed combustion fly ash’s utilizing in construction industry is the production of cold balled lightweight aggregate. Production of this material is economically advantageous and enables processing of large volumes of raw materials. This paper describes possibilities of using this aggregate for production of lightweight concrete of lower compressive strength classes and consequent testing of durability and resistance to various types of aggressive environment and cyclical freezing and thawing. Physico-mechanical properties and microscopic defects were also studied

• Periodical: Solid State Phenomena (Volume 249)
• Pages: 8-13
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.249.8
• Online since: April 2016
• Authors: Rudolf Hela, Martin Ťažký, Václav Vachuška, Tomáš Ťažký
• Keywords: Aggressive Environment, Concrete, Fluidized Bed Combustion Fly Ash, Frost Resistance, Light Weight Aggregate

References

[1] R. Hela, M. Hubertova, L. Bodnarova, T. Klecka, Lightweight Self Compacting Concrete (LWSCC) in the ready mix, In The 6th International Symposium on Cement and Concrete; CANMET/ACI International Symposium on Concrete Technology for Suistainable Development, XI AN, China Foreign Languages Press Beijing, 2006, p.1381.

DOI: 10.14359/15845

[2] M. Ťažký, R. Hela, Development of Structural Concrete with Fly Ash, In Advanced Materials Research; 2014, no. 1054, p.143–147.

DOI: 10.4028/www.scientific.net/amr.1054.143

[3] Chang-Seon Shon, Youn Su Jung, Don Saylak, Surendra K. Mishra, Development of synthetic aggregate using off-ASTM specification ashes, Construction and Building Materials, Volume 38, January 2013, Pages 700-707, ISSN 0950-0618.

DOI: 10.1016/j.conbuildmat.2012.09.009

[4] T. Robl, K. Mahboub, W. Stevens, R. Rathbone, Fluidized Bed Combustion Ash Utilization: CFBC Fly Ash as a Pozzolanic Additive to Portland Cement Concrete, Coventry University and The University of Wisconsin Milwaukee Centre for by-products utilization, In P. Claisse, E. Ganijan, F. Canpolat, T. Naik, Special Technical Proceedings 2nd International Conference on Sustainable Construction Materials and Technologies, Ancona, Italy, (2010).

DOI: 10.4028/www.scientific.net/kem.629-630.306

[5] Chien-Hsing Lu, Jyh-Cherng Chen, Kui-Hao Chuang, Ming-Yen Wey, The different properties of lightweight aggregates with the fly ashes of fluidized-bed and mechanical incinerators, Construction and Building Materials, Volume 101, Part 1, 30 December 2015, Pages 380-388, ISSN 0950-0618, http: /dx. doi. org/10. 1016/j. conbuildmat. 2015. 10. 068.

DOI: 10.1016/j.conbuildmat.2015.10.068