This work aims at evaluating the influence of curing conditions on the carbonation process of lime-based mortars and pastes and on the resulting mineralogical, macro- and microstructural properties. To this end, lime-based materials (mortars and pastes) were subjected to natural (0.05 % CO₂) and accelerated (5 % CO₂) carbonation. The influence of factors such as water/binder ratio, lime (agglomerated) particle size (surface area) and presence of admixtures on the carbonation process was also addressed. The materials cured under the CO₂-rich atmosphere carbonated faster and reached a higher degree of carbonation after only 7 days than those cured naturally for 3 years, even though total carbonation was not achieved. Nevertheless, due to the high conversion rate, the evolution of the properties of the tested materials after being subjected to accelerated carbonation for 7 days is expected to be minimal (stable properties were reached). Portlandite was mostly converted into calcite that precipitated as rhombohedral and scalenohedral crystals regardless of the curing environment. The crystals appeared to be larger and better developed in the specimens subjected to accelerated carbonation, which contributed to the higher mechanical strength displayed by these mortars.

这项工作旨在评估固化条件对石灰基砂浆和浆糊的碳化过程以及所产生的矿物学，宏观和微观结构性质的影响。为此，对石灰基材料（砂浆和浆状物）进行自然（0.05％CO ₂）和加速（5％CO ₂）碳化。还讨论了诸如水/粘合剂比率，石灰（附聚）的粒径（表面积）和掺混物的存在等因素对碳酸化过程的影响。在CO ₂下固化的材料即使未达到完全碳化，富碳气氛的碳酸化速度也更快，并且仅在7天后就达到了更高的碳酸化程度。然而，由于高的转化率，在经受加速碳酸化7天后，被测材料的性能变化预计很小（达到了稳定的性能）。波特兰石大部分转化为方解石，无论固化环境如何，其均以菱面体和偏斜面体晶体的形式沉淀。在经受加速碳酸化作用的样品中，晶体看起来更大且更好地发展，这有助于这些砂浆显示出更高的机械强度。