A mix of one or more inorganic or organic binders, aggregates, fillers, additives and/or admixtures.
A mortar batched and mixed in a factory. It may be “dry”, which is ready mixed only requiring the addition of water, or “wet”, which is supplied ready to use.
General purpose mortar
A mortar which satisfies general requirements, but is without special characteristics.(EN 998-1)
A mortar completely mixed and ready to use.
Multi-component mortar A mortar with separate pre-batched components (eg. powder + liquid) to be mixed together on site.
A mortar containing a mineral hydraulic binder which hardens with water.
Dispersion based mortar
A mixture of organic binding agent(s) in the form of an aqueous polymer dispersion, organic additives and mineral aggregates and/or extenders.
Layer of mortar laid in situ, directly onto a base, bonded or unbonded, or onto an intermediate layer or insulation layer, to obtain one or more purposes: to obtain a defined level, to carry the final flooring and/or to provide a wearing surface. (EN 13318)
Screed made with self-levelling properties of a flooring mortar. (EN 13318)
Surface to which the mortar (mineral or organic renders or paint coatings) is applied.
The lower coat (or coats) of a system.(EN 998-1)
The final coat of a multicoat rendering or plastering system. (EN 998-1)
External thermal insulation composite systems (ETICS)
An on site applied system of factory made products, comprising, as a minimum, adhesive mortar and/or mechanical fixing devices, thermal insulation material, one or more layers of a base coat, reinforcement, finishing coat. The components are inseparable. (EN 13499+13500)
The lower coat(s) of a rendering/plastering “multi-coat” system.(EN 998-1).
Basecoat mortar for ETICS
Layer applied directly onto the background / the thermal insulation material. (EN 13499+13500)
Finishing mortar for ETICS
A mortar consisting of mineral, organic and/or inorganic materials forming the final coat of a system. (EN 13499+13500)
Mineral coating mortar
A coloured factory-made mortar based on mineral binders (cement, lime, gypsum...) for the protection and decoration of vertical surfaces.
A designed mortar which prevents water penetration in a substrate, under a stated pressure.
A mix of one or more inorganic binders, aggregates, additives and/or admixtures, used for laying masonry units. (EN 998-2)
A designed mortar for the reconstitution or repair of natural stone masonry.
A designed mortar for repair or replacement of defective concrete. (EN 1504-1)
A designed mortar for levelling floors or screeds to obtain a flat and smooth surface.It is mainly used for flooring on horizontal surfaces.
A mortar with which to carry out floor screeding.
A mixture of hydraulic binder(s), aggregates, polymeric agents and other organic additives used to bond materials. (EN 12004)
A polymer-based adhesive used for bonding materials. (EN 12004)
Thin layer masonry mortar
A designed masonry mortar for use in joints between 1 mm and 3 mm thick. (EN 998-2)
Granular material that does not contribute to the hardening reaction of the mortar. (EN 998)
Admixture for mortar which delays the beginning of hardening. (EN 13318)
Bars, wires, meshes or fibres added to mortars or material incorporated within a plaster/render system to improve its mechanical strength. (EN 13318, EN 13500)
Thermal insulation adhesive
Material for bonding the thermal insulation material of an ETICS to the substrate. (EN 13500)
The sum of the application properties of a mortar which give its suitability. (EN 1015-9)
The quantity of air included in a mortar. (EN 1015-7)
The fluidity of a fresh mortar. (EN 1015-3 – Masonry mortars) (EN 12706 – Floor levelling mortars)
The change of consistency of a fresh mortar when energy is applied as for example by stirring or shaking.
The capacity of a fresh mortar to spread out naturally to form a flat surface.
The time of storage under stated conditions during which a mortar may be expected to retain its intended working properties. (EN 12004)
The interval between the time when a mortar is mixed and the time when it is ready to use. (EN 12004)
Pot-life (working time)
Period of time during which, after mixing, a mortar remains suitable for use. (EN 1015-9).
The maximum time interval for finishing after application of a mortar. (EN 1346 – Tile adhesives) (EN 12189 – Concrete repair mortars)
Correction time (adjustability)
The maximum time interval during which adjustment is possible without significant loss of final strength (eg. correction of bricks or tiles after application of the mortar). (EN 1015-9 – Masonry mortars) (EN 12004 – Tile adhesives)
The time after which the mortar begins to harden. (EN 1015-4)
The time during which the mortar develops strength.
The mortar resistance to chemical, mechanical and climatic conditions which comprise its effective life.
Resistance of a mortar to penetration of water, under a certain pressure.
Water vapour permeance
Water vapour passing per unit area of mortar, under steady state conditions, per unit difference in water vapour pressure. (EN 1015-19)
Adhesion strength (bond strength)
The maximum adhesion strength of a mortar applied onto a substrate, which can be determined by shear or tensile strength test.
Resistance of a mortar surface, to resist a tensile force, applied perpendicular to the mortar surface. (EN 1348 – Cementitious adhesives) (EN 1015-12 – Rendering/plastering mortars) (EN 12636 – Concrete repair mortars)
Strength determined by a force exerted in parallel. (EN 12615 – Concrete repair mortars)
Failure stress of a mortar determined by exerting a force in flexure on three points. (EN 1015-11 – Masonry mortars) (EN 13888 – Grouts for tiles)
Maximum value of a mortar failure determined by exerting a force in compression. (EN 1015-11 – Masonry mortars) (EN 13888 – Grouts for tiles)
Volume reduction of an unrestrained mortar during hardening. (EN 12808-4 – Grouts for tiles)
The resistance of a hardened mortar surface to wear by mechanical action. (ISO 7784-2) (EN 12808-2 Grouts for tiles)