2.12 MORTARS AND GROUTS . 2.12.1 Definitions 2.12.2 Masonry mortars 2.12.3 Rendering. Definitions. CEMENTITIOUS MATERIAL : Cement or cement replacement CONCRETE : Cementitious + Water + Fine aggregate + Coarse aggregate MORTAR (OR SANDED GROUT) : Cementitious + Water + Fine aggregate
Brick cavity wall
Damp Proof Course (dpc)
i. Frost resistance. This is easily achieved with air entrainment and, if it fails, requires re-pointing.
ii. Sulphate resistance. Some bricks leach sulphates, if SRPC is not used the consequences are almost impossible to rectify. Below dpc sulphates in groundwater may be a problem.
iii.Protection of embedded steel, i.e. reinforcement (mesh) and wall ties. This requires resistance to carbonation.
This has two main functions: