Mapei Mapegrout SV Fiber is a flowable, shrinkage compensated, quick setting and hardening, high-ductility cementitious mortar with stiff steel fibres for concrete repair. Suitable for application down to temperatures as low as -5°C.
Mapei Mapegrout SV Fiber is suitable for repairing concrete structures where high thickness's and special shapes of deterioration require the use of a free-flowing mortar, including at low temperatures.
Mapegrout SV Fiber is a pre-blended mortar in powder form, made from special hydraulic binders, high-strength cement, selected graded aggregates, special admixtures, and stiff, hooked fibres in brass plated steel according to a formula developed in MAPEI’s own research laboratories.
Mapei Mapegrout SV Fiber is suitable for:
- Repairing concrete floors (industrial, roads, airports)
- Repairing hydraulic structures (breather channels, canals and forced run-off channels)
- Restoration of floor slabs after removing deteriorated areas by scarifying
- Repairs to joints in motorways
- Rebuilding and levelling off the upper parts of base plinths and reinforced concrete bearing elements on motorway viaducts
- Repairing lower spigots on pre-compressed beams for viaducts
When Mapegrout SV Fiber is mixed with water, it forms a fluid mortar which is suitable for casting into form work, without segregation, at a thickness of between 1 and 5 cm. Once hardened, Mapegrout SV Fiber has the following characteristics:
- High flexural and compressive strength
- Modulus of elasticity, thermal expansion coefficient and permeability coefficient similar to high quality concrete
- Impermeable to water
- Excellent bond strength to old concrete, if dampened with water before application, and to reinforcement rods, especially if treated beforehand with Mapefer or Mapefer 1K
- High resistance to wear due to abrasion or impact
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 old paint from the concrete and reinforcement rods by sandblasting. Saturate the substrate with water. Before casting, wait until excess surface water has evaporated off. Use compressed air to accelerate this process if required.
Preparation of the mortar
Pour 3.4-3.6 litres of water into the cement mixer, slowly add Mapegrout SV Fiber. Mix for 2-3 minutes, remove all powder which has stuck to the walls of the mixer and mix again for 2-3 minutes to form a fluid, lump-free mix. A mortar mixer or drill with a mixer fitting may also be used, according to the quantity of mortar required. Avoid excessive air entrainment while mixing.
Mapegrout SV Fiber remains workable for approximately 20 minutes at +20°C. If there is insufficient boundary support, filling layers of Mapegrout SV Fiber thicker than 5 cm must only be applied after inserting reinforcing rods. A layer of at least 2 cm thick must be applied over the rods.
Application of the mortar
Pour Mapegrout SV Fiber in a continuous flow from one side only of the area to be filled, making sure that all air is expelled. Immediately smooth over the surface with a trowel. After application, Mapegrout SV Fiber does not require vibration. If applied in formwork, water must not be absorbed from Mapegrout SV Fiber. In this case, we recommend treating the form work with a form-release agent (for example Form Release Agent DMA 1000).
- Mapegrout SV Fiber meets the main requirements of EN 1504-9 (“Products and systems for protecting and repairing concrete structures: definitions, requirements, quality control and conformity assessment. General principles for the use and application of systems”), and the minimum requirements for EN 1504-3 (“Structural and non-structural repairs”) for R4-class structural mortars.
|Type:||Repair Mortar Powder|
|Mixing Ratio:||100 parts of Mapegrout SV Fiber with 13.5-14.5 parts of water (approx. 3.4-3.6 litres of water per 25 Kg bag)|
|Suitable Substrates:||For repairing concrete|
|Application Method:||Pour and Trowel|
|Theoretical Coverage:||20 Kg per m2 per cm of thickness|
|Wet Film Thickness (WFT):||-|
|Dry Film Thickness (DFT):||-|
|Pot Life:||20 minutes at 20°C|
|Surface Dry:||See data sheet|
|Fully Cured:||See data sheet|
|Shelf Life:||2 years minimum in original unopened containers|
|Packaging:||Available in 25 Kg bags|
The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.
Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.