8. Sealing and anchoring

Cement mortar seals

Traditionally, cement mortars were used to seal metal parts in concrete or stone, and still are today. In such cases, it is imperative to choose a cement that is very slightly expansive during hardening, to avoid any loosening due to shrinkage.

Cement suppliers list their expansive cements for grouting, such as Vicat cement.

Features :

• It is recommended to add approximately 5% of a styrene-butadiene or vinyl emulsion to the mortar to improve adhesion to concrete and metal parts;

• The mortar must have a thick, non-flowing consistency so that it does not run or creep in vertical sections;

• adhesion to substrates must be greater than the breaking strength of the...