TY - JOUR AU - Arandigoyen, M. AU - Álvarez, J. I. PY - 2006/03/30 Y2 - 2024/03/29 TI - Carbonation process in lime pastes with different water/binder ratio JF - Materiales de Construcción JA - Mater. constr. VL - 56 IS - 281 SE - Research Articles DO - 10.3989/mc.2006.v56.i281.88 UR - https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/88 SP - 5-18 AB - Most research on binder carbonation is based on the analysis of depth changes in the carbonation front. Moreover, previous studies have dealt with mortars, where aggregates play a role in the variations in carbonation patterns. In the approach adopted in the present study, carbonation was determined in terms of the variation in weight resulting from CO<sub>2</sub> absorption, and a new parameter (independent of the drying process), denominated A, was established. This parameter was assessed in several lime pastes with different W/B (water/binder) ratios and its variations were correlated to paste microstructure. Due to the type of porosity prevailing in lime pastes, diffusion took place according to Fick's law; water was retained not by capillarity but by surface adsorption. Drying did not retard carbonation in lime pastes ER -