Cementitious Composites with Low Water Permeability through Internal Hydrophobicity


Article Preview

Three different hydrophobic agents were considered for internal hydrophobation of cementitious composites. The dosage varied between one and two percent of cement weight and these admixtures were introduced to the composite during the mix procedure. capillary suction test, pore protection factor (PF) test and compressive strength test where conducted for material characterization. The results show reduction in water permeability of modified samples and rapeseed oil was the most effective admixture between these agents. While water resistance in the PF test of the modifies samples were increased between 21% to 33%, the compressive strength was reduced between 10% to 18%. In cases where reducing water permeability is a major challenge in cementitious composites, using rapeseed oil for internal hydrophobation can be an environmentally friendly solution.



Edited by:

Marina Polyakova




M. H. Baghban et al., "Cementitious Composites with Low Water Permeability through Internal Hydrophobicity", Key Engineering Materials, Vol. 779, pp. 37-42, 2018

Online since:

September 2018




* - Corresponding Author

[1] M. H. Baghban, P. J. Hovde, and S. Jacobsen, Analytical and experimental study on thermal conductivity of hardened cement pastes, Materials and Structures, 46 (9), 1537-1546 (2013).

DOI: https://doi.org/10.1617/s11527-012-9995-y

[2] S. Smeplass, O. Skjølsvold, Concrete testing: capillary suction and porosity, SINTEF Internal Procedure KS 70 110(in Norwegian), Trondheim, Norway (1996).

[3] E. J. Sellevold, T. Nilsen, Condensed silica fume in concrete: a world review. Supplementary Cementing Materials for Concrete, Editor V.M. Malhotra, CANMET (1987).

[4] J. Punkki, and E. J. Sellevold, Capillary Suction in Concrete: Effect of Drying Procedure, Nordic Concrete Research, Publication No. 15, Oslo, Norway (1994).

[5] H. Justnes, T. A. Østnor, N. Barnils Vila, Vegetable oils as water repellents for mortars. Proc. 1st International Conference of Asian Concrete Federation, Chiang Mai, Thailand, October 28-29 (2004).

[6] M. H. Baghban, P. J. Hovde, and S. Jacobsen, Effect of internal hydrophobation, silica fume and w/c on water sorption of hardened cement pastes. In: International Conference on Durability of Building Materials and Components (XII DBMC), Porto, Portugal, April 12-15 (2011).

[7] M. H. Baghban, P. J. Hovde, and S. Jacobsen, An Experimental Investigation on Factors Affecting Water Sorption of Hardened Cement Pastes. In: 5th International Building Physics Conference (IBPC), Kyoto, Japan, May 28-31 (2012).

[8] C. Hall, W. D. Hoff, Water transport in brick, stone and concrete, Spon Press, London, UK (2012).

[9] SFS 4475. Concrete. Frost Resistance. Protective Pore Ratio, Soumen Standardoimisliitto SFS, Finland (1998).

[10] E. J. Sellevold, T. Farstad, The PF-method – A Simple Way to Estimate the w/c-ratio and Air content of Hardened Concrete. Proceedings of Con. Mat'05 and Mindess Symposium, UBC, Vancouver (2005).