Modelling of Influence of Heat Curing on Mechanical Properties of Fly-Ash Concrete Mixtures

Abstract:

This paper describes influence of heat curing on development of mechanical characteristics of concrete mixtures based on alkali activated fly-ash (POPbeton). One of the major influences for the correct treatment of alkaline activation is the quantity of heat energy in a given time period which is supplied during activation. The paper describes the dependence of development of compressive strength of POPbeton on the time and temperature of heat curing. A predictive model was assembled which describes the dependence of the supplied heat energy over time on the resulting characteristics of POPbeton. The result is a tool that can predict the resulting values of mechanical characteristics of test samples of POPbeton. The final goal of this project is the transfer of alkali activated fly-ash from big coal power plants into building industry.

• Periodical: Advanced Materials Research (Volume 1000)
• Pages: 150-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1000.150
• Online since: August 2014
• Authors: Tomáš Váchal*, Rostislav Šulc, Pavel Svoboda
• Keywords: Dependence, Fly Ash (FA), Heat Curing, Temperature

References

[1] R. Šulc, P. Svoboda: Activation of fly ash binder in POPbeton without heating. XI. Conf. Ekologie a nové stavební hmoty a výrobky Vol. (2007), pp.116-119.

[2] T. Váchal, P. Svoboda Influence of temperature and time of heat curing in geopolymer reactions of fly-ash concrete mixtures. XVI. Conf. Ekologie a nové stavební hmoty a výrobky Vol. (2012), p.79 – 82.

[3] R. Šulc, P. Svoboda: Alkalická aktivace mletého úletového popílku. XIII. Conf. Ekologie a nové stavební hmoty a výrobky Vol. (2009), p.315 – 318.

[4] T. Váchal, R. Šulc, P. Svoboda: Application of alkali activated fly ash in civil engineering. 19th Conf. Czech Concrete Day Vol. (2012), pp.249-253.

DOI: 10.4028/www.scientific.net/kem.677.86