Mortare de asanare pe baza de ciment MAPEI PoroMap Rinzaffo

Limba: Engleza

29 afisari

Tip documentatie: Fisa tehnica

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p a o f f M a o z r n o i P R EN 998-1 IN COMPLIANCE WITH EUROPEAN STANDARD EN 998-1 GP-CS IV RENDERING AND PLASTERING MORTAR Salt-resistant transpirant scratch-coat mortar, based on hydraulic pozzolanicreaction binder, to be used by hand as first layer when applying de-humidifying renders WHERE TO USE Renovating brick, stone and tuff masonry, including recent builds, damaged by capillary rising damp. Renovating masonry damaged by the crumbling effect of sulphates, chlorides and nitrates. Some application examples PoroMap Rinzaffo must always be used as the first layer in the following systems: • internal and/or external macro-porous, de-humidifying and insulating render on stone, brick, tuff and mixed masonry, including recent builds, with capillary rising damp and saline efflorescence; • de-humidifying render on stone (such as limestone) and/or particularly porous, absorbent brick masonry, and in general wherever there is saline efflorescence; • de-humidifying render

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Pagina 2 - Mortare de asanare pe baza de ciment MAPEI PoroMap Rinzaffo Fisa tehnica Engleza on...

on masonry in lagoon areas or close to the sea. TECHNICAL CHARACTERISTICS PoroMap Rinzaffo is a ready-mixed powdered mortar for macro-porous, de-humidifying and insulating render made from special hydraulic, pozzolanic-reaction binders, natural sand and special additives with very low emission of volatile organic compounds (EMICODE EC1 R Plus) according to a formula developed in the MAPEI research laboratories. This product is classified as GP according to EN 998-1 Standards: “General purpose mortar for internal/external render”, Category CS IV. When mixed with water in a cement mixer, PoroMap Rinzaffo forms a salt-resistant, transpirant skimming mortar with a semi-fluid consistency which is easy to apply by trowel both on vertical surfaces and ceilings. The properties of a mortar made with PoroMap Rinzaffo, such as mechanical strength, modulus of elasticity and porosity, are very similar to those a of mortar made using lime, lime-pozzolan or hydraulic lime originally used in the

Pagina 2-Mortare de asanare pe baza de ciment MAPEI PoroMap Rinzaffo Fisa tehnica Engleza on masonry in...

Pagina 3 - Mortare de asanare pe baza de ciment MAPEI PoroMap Rinzaffo Fisa tehnica Engleza ...

construction of old buildings. Compared with these types of mortar, however, PoroMap Rinzaffo also has properties which make it resistant to acid rain, freeze-thaw cycles, the leaching action of rainwater, alkali-aggregate reactions and soluble salts often present in the masonry and in the ground on which the masonry is built. Typical values are shown in the Technical Data table (see Application Data and Final Performance sections) which refer to the main characteristics of PoroMap Rinzaffo at both the wet and hardened states. RECOMMENDATIONS • Apply a 5 mm thick layer of PoroMap Rinzaffo before applying the macro-porous de-humidifying and insulating render made from PoroMap Intonaco. apffo M roinza o P R • Do not apply PoroMap Rinzaffo with a rendering machine (use PoroMap Rinzaffo Macchina). • Never add additives, cement or other binders (lime and gypsum) to PoroMap Rinzaffo. • Do not apply PoroMap Rinzaffo if the temperature is lower than +5°C. Masonry after removi

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ng the render Hydrowashing the masonry APPLICATION TECHNIQUE Preparation of the substrate Completely remove all the render using hand or power tools to a height of approx. 50 cm above the damaged render, and in all cases to a height of at least twice the thickness of the wall. Remove all traces of loose or crumbling material, dust, mould and any other substance or material that could affect the bond of the PoroMap Rinzaffo and PoroMap Intonaco de-humidifying cycle until the substrate is clean, sound and compact. Clean the masonry with low-pressure water jets to remove any efflorescence or soluble salts present on the surface. Repeat this operation several times if necessary. Repair any gaps and uneven areas in the masonry by patching or tacking them using stone, bricks or tuff with similar characteristics to the original material. Saturate the substrate with water to prevent it drawing off water from the mortar and compromising its final performance characteristics. Excess water must