Dimensional stability of materials based on Portland cement at the early stages

ANGELICA MARIA MESA YANDY; RAÚL L. ZERBINO; GRACIELA M. GIACCIO; NELIDA A. RUSSO; RICARDO DUCHOWICZ

San Diego

Congreso; Optics and Photonics SPIE 2014; 2014

SPIE

In this work two fiber optic sensing techniques are used to study the dimensional stability in fresh state of different cementitious materials. A conventional Portland cement mortar and two commercial grouts were select. The measurements were performed by using a Bragg grating embedded in the material and non-contact Fizeau interferometer. The first technique was applied in a horizontal sample scheme, and the second one, by using a vertical configuration. In addition, a mechanical length comparator was used in the first case in the order to compare the results. The evolution with time of the dimensional changes of the samples and the analysis of the observed behavior are included.