Grout, often employed to fill gaps between tiles, stones, or other surfaces, can be formulated with lime as a primary component. This type of grout utilizes hydrated lime (calcium hydroxide) as a binder, sometimes combined with aggregates such as sand or crushed stone, and other additives to enhance its properties. The presence of lime contributes to the grout’s workability and breathability.
The incorporation of lime in grout offers several advantages. Lime-based grouts exhibit excellent flexibility, reducing the likelihood of cracking due to substrate movement. Their porous nature allows moisture to evaporate, mitigating the risk of moisture buildup and associated problems like mold growth. Historically, lime-based mortars and grouts were widely used in construction due to the availability of lime and its durable characteristics. The use of lime can contribute to a more sustainable building approach as it can re-absorb carbon dioxide over time.
