Influence of Humidity on the Material Properties of Cement Paste with Fly Ash in the Mutual Relation 50/50

Abstract:

The different properties of building materials are often caused by their varying humidity respectively water saturation levels. The cement paste is a porous material. The cement paste mixed with fly ash is highly porous material whose properties depend on the amount of pores in the material and the state of saturation. Basic material properties like strength, Modulus of elasticity, volume weight are compared in article for cement paste with fly ash for two states, saturated and dried materials. The ratio of cement and bulk ash was 1:1. Article presents results of experiments in age of 1 month after production.

• Periodical: Applied Mechanics and Materials (Volume 486)
• Pages: 327-332
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.486.327
• Online since: December 2013
• Authors: Pavel Padevět*, Ondřej Zobal
• Keywords: Basic Creep, Cement Paste, Saturated Cement Paste, Shrinkage, Strength in Compression

References

[1] P. Padevět, O. Zobal, Historical Development of Material Properties of Concrete with Addition of Fly Ash, Proceedings the 2nd European Conference of Civil Engineering (ECCIE '11), Puerto De La Cruz, Tenerife, Spain, December 10-12, 2011, p.42/46.

[2] J. G. M. Van Mier, Fracture Processes of Concrete CRC Press (1997).

[3] B. Bahar Demirel, O. Kelestemur, Effect of elevated temperature on the mechanical properties of concrete produced with finely ground pumice and silica fume, Fire Safety Journal, 45 (2010) 385–391, www. elsevier. com/locate/firesaf.

DOI: 10.1016/j.firesaf.2010.08.002

[4] D. P. Bentz, A. S. Hansen, J. M. Guynn, Optimization of cement and fly ash particle sizes to produce sustainable concretes, Cement & Concrete Composites 33 (2011), p.824–831, www. elsevier. com/locate/cemconcomp.

DOI: 10.1016/j.cemconcomp.2011.04.008

[5] L. Melzerová, P. Kuklík, Non-destructive Tests of Modulus of Elasticity for the GLT Beam, (2012).

[6] P. Padevět, Mechanical Properties of Cement Pastes, International Confernce 70 Yeasr SvF STU, Bratislava, (2008).

[7] Van Mier, J.G.M., Fracture Processes of Concrete CRC Press (1997), ISBN 0-8493-9123-7.

[8] Bahar Demirel, B., , Kelestemur, O., Effect of elevated temperature on the mechanical properties of concrete produced with finely ground pumice and silica fume, Fire Safety Journal, 45 (2010) 385–391, www. elsevier. com/locate/firesaf.

DOI: 10.1016/j.firesaf.2010.08.002

[9] Padevět, P., Bittnar, P., Zobal, O., Changing the Properties of Cement Paste with Addition of Fly Ash in Time, Experimental Stress Analysis 2012, June 4-7, 2012, Tabor, Czech Republic, ISBN 978-80-01-05060-6.

DOI: 10.1016/j.proeng.2012.09.547