Plasterflow M15

Salt-resistant, hi-flow masonry mortar, based on natural hydraulic lime for reconditioning and consolidating masonry

Safety Data Sheet

Specifications

Overview Details Application Documents

Product Description

Plasterflow M15 is a free-flowing, cement-free mortar in powder form for reconditioning and consolidating masonry made from natural hydraulic lime,, fine natural sand, special additives and micro-fibers with very low emission level of volatile organic compounds. This product is classified G according to EN 998-2 Standards: “Guaranteed performance, general purpose masonry mortar for external use on elements with structural requirements”, class M 15. When mixed with water Plasterflow M15 forms a fluid, volumetrically-stable, salt-resistant mortar which is easy to pour and pump into formworks and structures with large internal gaps and cavities without segregating. Once hardened, the characteristics of the mortar made from Plasterflow M15, such as mechanical strength, modulus of elasticity and porosity, are very similar to those of the mortar made from lime, lime-pozzolan or hydraulic lime originally used in the construction of old buildings. Plasterflow M15 also has properties which make the product resistant to various chemical-physical aggressive phenomena, such as the presence of soluble salts and alkali-aggregate reactions. Besides, the mortar does not induce the formation of efflorescence and does not release soluble salts. Plasterflow M15 is recommended for layers up to 4 cm thick.

Field of Application

Reconditioning and consolidating stone, brick, tuff and mixed facing walls where the layer of mortar to be applied and the shape of the structure require the use of free-flowing products.

Mixing free-flowing, salt-resistant, volumetrically stable, fluid, high-strength masonry mortars for filling large internal cracks, gaps and cavities when reconditioning and consolidating structures such as:

• foundations, pillars, vaulted roofs and archways

• rubble masonries

• stone, brick, tuff and mixed masonry in general on existing buildings, including listed buildings of historical or artistic interest.

Product Details

Product identity

Consistency: powder

Colour: white

Type of binder (EN 459-1): NHL 3.5 and NHL 5 and Eco-Pozzolan

Maximum size of aggregate (EN 1015-1) (mm): 2.5

Bulk density (kg/m³): 2,230

Chloride content (EN 1015-17) (%): < 0.05

PACKAGING

Plasterflow M15 is supplied in:

– 25 kg paper bags

COVERAGE / CONSUMPTION

The consumption is approximately 1.8kg/m2 at 1 mm thickness.

Application Procedure

Preparation of the substrate

• Remove all deteriorated and loose concrete to form a solid, rough and strong substrate. Any areas previously repaired and which are not perfectly bonded must also be removed.
• Remove all dust, rust, cement laitance, grease, oil and paint from the concrete and reinforcement rods by sandblasting or hydro-sandblasting.
• Treat reinforcement rods with Ferroprimer 1K or 2K, according to the procedure given in the Technical Data Sheet of product.
• Saturate the substrate with water.
• Before carrying out repairs, wait until excess water has evaporated.
• Install the frame works.

Preparing the product

Mix Plasterflow M15 in a cement mixer or in the hopper of a screw-type pump with a separate mixer, such as a Putzmeister S 5 or a similar machine. Small amounts of the product may be prepared using an electric drill at low speed with a mixing attachment. After adding around 3 litres of clean water for every 25 kg bag of product in a cement mixer or in the mixing unit of a screw-type pump, slowly add the powdered mortar in a constant flow. Mix for 3 to 4 minutes and then make sure the mix is well blended and even and that there are no lumps. Make sure there are no traces of powdered mortar stuck to the sides or bottom of the mixer.

Applying the product

Pour or pump the product into the structure from one side only in a constant flow to help expel any air from inside the element to be regenerated and to fill all the gaps and cavities. Even though it is not necessary to vibrate the product, make sure all the gaps and cavities are completely filled. To help the mortar flow into the more difficult areas, use wooden laths, round bars or a vibrator. After pouring or pumping the product we recommend curing it very carefully to make sure that the mixing water does not evaporate too quickly, particularly in hot and/or particularly windy weather, otherwise surface cracks caused by plastic shrinkage may form. In such cases take special care when curing the mortar, especially during the first 36-48 hours, by spraying water on the surface, or with other systems to prevent the mixing water evaporating off too quickly.