ABSTRACT
ABSTRACT: Since the mid-twentieth century many artists have used cementitious materials in their projects. Currently, some of these works show evidence of decohesion which requires an adapted response to each case. This paper analyzed the behavior of two consolidants, tetraethyl orthosilicate (Estel 1000®) alone and blended with Ca(OH)2 nanoparticles (Nanorestore®), on Portland cement mortars, following international recommendations for cultural interventions. The results obtained show that these products reduce significantly the hydric properties of the material and increase its mechanical strength. The color and gloss variations generated by the action of these treatments are near or below the limits of human perception. The interaction between the products and the cement resulted in the formation of a new C-S-H gel, with a longer chain length. Portlandite record is reduced with both products.
