Permeability and mechanical properties of cement mortars colored by nano-mineral additives
1 Laboratory of Applied Solid State Chemistry, Faculty of Sciences, BP 1014. R.P. – Avenue Ibn Battuta, 10000 Rabat, Morocco
2 Laboratory of Civil Engineering and Mechanics, INSA Rennes, 20 Av.des Coësmes Hills, 35043 Rennes, France
This work concerns a preliminary study on issues that relate primarily to the permeability of cementitious materials under the influence of some specific inexpensive additions that can play an important role in preserving the environment. We studied the addition of dyes in the presence of TiO2 on the Portland cement mortar. The used dyes are a yellow powder containing iron oxyhydroxide (FeO (OH)), a blue-based powder tellurate manganese (MnTe2O5) and red powder containing iron oxide (Fe2O3). We measure the setting time, permeability and mechanical properties of Portland cement mortars colored with nano-mineral oxides mentioned previously. Test results indicate that the addition of nano-particles has a little influence on the setting time, improves penetration resistance that is due the affinity of the pore structure of mortar and slightly improves the resistance to compression for low levels of nanoparticles of TiO2.
Key words: Portland cement mortars / nano-particles / permeability / penetration / pore structure.
© Owned by the authors, published by EDP Sciences, 2012