What is a noted limitation of sand to sand lime mortar?

The noted limitation of sand to sand lime mortar being water soluble is significant because it affects the durability and performance of the mortar in various environmental conditions. When exposed to moisture, water-soluble components can wash away or weaken the structure, leading to a decrease in the efficacy of the mortar in holding together the masonry units.

Sand lime mortar is often utilized in construction for its capacity to create aesthetically pleasing finishes and good thermal performance. However, its water solubility means that it may not be suitable for situations where the mortar will frequently come into contact with water or where moisture can infiltrate over time. This limitation necessitates careful consideration of where and how this type of mortar is used to ensure structural integrity and longevity.

Other options, such as high elasticity and very strong bonding ability, do not accurately characterize a limitation of sand lime mortar. Rather, these attributes are generally seen as beneficial features of mortar that contribute to its effectiveness in construction. High thermal resistance is also an advantage, as it helps maintain temperature control within buildings. These characteristics contribute positively to the functionality of sand lime mortar, contrasting with the issues posed by its water solubility.