Effect of Ageing Period on Properties of Mechanically Activated Portland Cement

Abstract:

This experiment describes the effects of the aging time since the moment of milling to Portland cements physico-mechanical properties. Possible mechanical activation effects to Portland cement particles has been found. For this experiment two kind of milling technology were used, the conventional milling in a ball mill and high-speed grinding technology in high speed disintegrator and influence of these technologies was also described. The aging period of the cement influences in particular physico-mechanical properties in the early stages of hydration but the final properties after 28 days were not influenced.

• Periodical: Key Engineering Materials (Volume 760)
• Pages: 37-42
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.760.37
• Online since: January 2018
• Authors: Karel Dvořák*, Matěj Švéda
• Keywords: Cement, Disintegrator, Mechanical Activation, Milling

References

[1] García-Díaz I., Palomo J.G., Puertas F.: Cem. Concr. Comp. 33, 1063 (2011).

[2] K. Tkáčková, Mechanical Activation of Minerals, Minerals engineering, 11 (1991) 4, 185.

[3] N. Vdovic, I. Jurina, S.D. Skapin, I. Sondi, The surface properties of clay minerals modified by intensive dry milling-revisited, Applied Clay Science. 48 (2010) 4, 575–580.

DOI: 10.1016/j.clay.2010.03.006

[4] F. Garcia, N.L. Bolay, J.L. Trompette, C. Frances, On fragmentation and agglomeration phenomena in an ultrafine wet grinding process: the role of polyelectrolyte additives, International Journal of Mineral Processing, 74 (2004) 10, S43-S54.

DOI: 10.1016/j.minpro.2004.07.001

[5] J. Hrachova, P. Komadel, V.S. Fajnor, The effect of mechanical treatment on the structure of montmorillonite, Materials Letters, 61 (2007) 16, 3361–3365.

DOI: 10.1016/j.matlet.2006.11.063

[6] N. Kotake, M. Kuboki, S. Kiya, Y. Kandac, Influence of dry and wet grinding conditions on fineness and shape of particle size distribution of product in a ball mill, Advanced Powder Technology, 22 (2011) 1, 86–92.

DOI: 10.1016/j.apt.2010.03.015

[7] G. Bumanis, D. Bajare, Compressive strength of cement mortar affected by sand microfiller obtained with collision milling in disintegrator, Procedia Engineering (2016) Modern Building Materials, Structures and Techniques, MBMST (2016).

DOI: 10.1016/j.proeng.2017.02.037

[8] Hint, J.A. The Basic Problems of Mechanical Activation Reports of the 5th Symposium on Mechanochemistry and Mechanics of Hard Materials 1977: p.14 – 32.

[9] Kipnis, B.M. Analysis of Prospects for the UDD – Technology in the Field of Polymeric Materials UDD – Technology Abstracts II, SKTB 1983: p.44 – 46.

[10] ČSN EN 196-6 Methods of testing cement – Part 6: Determination of Fineness.

[11] ČSN EN 196-1 Methods of testing cement – Part 1: Determination of strength.

[12] ČSN EN 196-3 Methods of testing cement – Part 3: Determination of setting times and soundness.