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MB5

MB5

MB5

Product catalog summary
Product and Fields of Application
MB5 is a pre-dosed fibered mortar packaged in polyethylene bags, containing silico-calcareous aggregates, Portland cement, added minerals, polypropylene fibers, and additives to enhance rheological properties. It complies with European Standards EN 998-1 and EN 998-2 and is suitable for load-bearing walls but not for internal and external plasters. The formulation minimizes macro cracks in plasters thicker than 20 mm.

Preparation of the Surface
  • Masonry: Ensure clay bricks or concrete blocks are clean and free of dust, grease, and oil. Moisten bricks and blocks in high temperatures and dry weather before applying mortar.
  • Plaster: The installation area should be roughcast and free of dust, grease, and oil. Moisten the surface in high temperatures and dry weather before plaster application.

Preparation of the Product
Mix a bag of MB5 with 3 liters of clean water using a mechanical mixer for a plastic and homogeneous consistency. Hand mixing is possible with a shovel. Apply by hand with a trowel, level with an aluminum straightedge, and finish with a wooden or plastic trowel.

Packaging and Consumption
MB5 is available in 25 kg polyethylene bags. Consumption varies for masonry and is 17 kg/cm2 for a 10 mm plaster thickness.

Warnings
  • Operating temperature: +5°C to +35°C.
  • Protect from rapid drying in summer and moisten surfaces as needed.
  • Avoid applying on iced surfaces or when frost is expected within 24 hours.
  • Do not add aggregates, cement, lime, or other products to MB5.
  • Apply plaster in 10-20 mm coats and masonry mortar in 5-20 mm thickness.
  • Store unopened in a dry, ventilated place for up to 6 months.
  • Do not expose the package to the sun for more than 30 days.

Technical Data
  • Maximum aggregate size: 2.0 mm
  • Consistency: 181 mm
  • Air content: 15%
  • Working time: 270 minutes
  • Density of fresh mortar: 1,900 Kg/m3
  • Density of hardened mortar: 1,700 Kg/m3
  • Compressive strength after 28 days: ≥ 6 N/mm2
  • Dynamic elasticity modulus: 7,900 N/mm2
  • Adhesion to surface: 0.30 N/mm2
  • Water absorption: 0.60 Kg/m2 x min0.5
  • Vapour permeability: 16
  • Thermal conductivity: 0.93 W/mK
  • Reaction to fire: Euroclass A1

The technical data are average values based on annual analyses under controlled conditions. Users should verify product suitability through preliminary tests. The datasheet is subject to updates, and the latest version is available on the Bernardelli Group website.
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Catalog excerpts

MB5-1

PRE-DOSED FIBERED MORTAR FOR PLASTER AND MASONRY PRODUCT AND FIELDS OF APPLICATION MB5 is a pre-dosed fibered mortar in polyethylene bags containing in separate sections silico-calcareous aggregates, Portland cement, added minerals, polypropylene fibres and additives to improve the rheological characteristics of the product. The product complies with the European Standards EN 998-1 and EN 998-2 and comes within the parameters mentioned in Chapter 11 of the Ministerial Decree 14/01/2008 “New Technical Standards for Construction”. MB5 is a mortar suitable for the entrapment of load-bearing walls and not for making of internal and external plasters. The presence within of the formulation of selected aggregates, high quality cements, additives, make MB5 particularly workable and easy application, the polypropylene fibres instead allow to minimize the formation of macro cracks even in the case of plasters with thicknesses greater than 20 mm. Suitable for the entrapment of load-bearing walls MASONRY The clay bricks or concrete blocks must be clean, free of dust, grease and/or oil. With very high temperatures and dry weather it is advisable to moisten the bricks and blocks before laying the mortar. PLASTER The area of installation previously roughcast (at least 24-48 hours) should be free of dust, grease and/or oil. With very high temperatures and dry weather it is advisable to moisten the bricks and blocks before proceeding with the installation of the plaster. Suitable for internal and external plasters EDILQUATTRO BERNARDELLI GROUP A bag of MB5 is to be mixed with the addition of 3 litres of clean water by means of a mechanical mixer (cement mixer, cochlea kneader until obtaining a plastic and homogenous consistency and for not more than 3 minutes. MB5 can be mixed by hand with the aid of a shovel as long as the mixture is smooth and free of lumps. The application of MB5 must be performed by hand using a trowel, subsequently level with an aluminium straightedge and at the end float as with a wooden and/ or plastic trowel. Via del Canneto, 53 | 25010 Borgosatollo (BS) - ITALY | Tel +39 030 2702372 | Fax +39 030 2703192 [email protected] | www.bernardelligroup.com

 Open the catalog to page 1
MB5-2

PRE-DOSED FIBERED MORTAR FOR PLASTER AND MASONRY TECHNICAL DATA DESCRIPTION TESTING METHOD AVERAGE VALUES NORMAL LIMITS (on an annual basis) Maximum size of the aggregate Consistency by means of concentrating table Working time Density of fresh mortar Density of hardened mortar Compressive strength after 28 days Dynamic elasticity modulus Adhesion to the surface - Type of Fracture Water absorption Thermal Conductivity [λ] (table value) PACKAGING Polyethylene bags of 25 kg (Product subject to natural shrinkage) MASONRY: Variable depending on the type of masonry Do not apply onto iced brick and...

 Open the catalog to page 2
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.