märkäsekoitus

Märkäsekoitus, which translates to "wet mix" in English, is a term commonly used in Finland to describe a type of mortar or concrete mixture where the proportions of aggregate, cement, and water result in a significantly fluid and workable consistency. Unlike stiffer mixes, märkäsekoitus is pourable and can be easily spread or pumped.

This type of mix is often employed in applications where it needs to flow into confined spaces or fill formwork without extensive vibration. Examples include certain types of grouting, self-leveling flooring compounds, and some decorative concrete applications where a smooth, seamless finish is desired. The high water content contributes to its fluidity, but careful consideration of the water-cement ratio is still crucial to ensure adequate strength and durability once cured.

The specific composition of a märkäsekoitus can vary depending on the intended use. It typically involves a higher proportion of fine aggregates, such as sand, to enhance flowability. The cement content might also be adjusted to achieve the desired binding properties. While its workability is a significant advantage, the potential for segregation of aggregates in very wet mixes needs to be managed through proper mixing and placement techniques.