High strength structural repair mortar
(Formerly known as Vetomortar CHR)
Vetorep CR520 is a single component polymer modified fibered cementitious structural repair mortar that is ready to use and only requires the addition of water on site. Once mixed, the product becomes a thixotropic mortar that is hand applied for the repair of demanding structural repair while being compatible with host concrete. Vetorep CR520 is composed of a blend of hydraulic cement, carefully selected and graded aggregates, fibers, and special additives to give it its unique properties.
- Easy to use, a single component product.
- High physical and mechanical properties.
- Extremely low permeability providing reinforcement protection against corrosion as well as resistance to ingress of contaminants.
- Non-Shrink properties ensuring repair dimensional stability.
- Suitable for internal and external applications.
- Breathable, compatible with host concrete.
- Thixotropic properties allowing high build up in vertical and overhead repairs.
- ASTM C109
- ASTM C348
- ASTM C307
- ASTM C157
- EN 13062:2003
- EN 1504:2013
- Vetorep CR520 is supplied in a 25 Kg Bag. Consumption - 14 Liters Yield.
- Vetobond AB432 is supplied in 4 Liter Can. Consumption - 6-8 m2 / Liter.
- Vetoprime CP436 is supplied in 2Kg & 4kg Kit. Consumption - 1.18m2/2kg Kit @ 1mm, 2.35m2/4kg Kit @ 1mm
Note: Vetorep CR521 repair area should not exceed 2.5 m2 in a single application.
An original sealed bag of Vetorep CR520 has a shelf life of 12 months provided it is stored clear of ground in a dry and shaded temperature-controlled place, at temperatures between 5ºC - 35ºC.
Design Criteria
Application area shall not exceed 2.5 m2 using Vetorep CR520, if such conditions exist use Vetorep CR521. The use of Vetorep CR520 in a single layer shall conform to:
- Vertical application up to 75 mm.
- Overhead concrete repair up to 20 mm.
- Horizontal and patch repairs up to 100 mm.
Higher thickness of application can be made in layers using wet on wet technique.
Priming
To accept Vetorep CR520, prime all grit blasted steel reinforcements within 2 to 4 hours by applying one or two coats of corrosion inhibitor for steel reinforcement Vetoprime CP436.
Soak the areas to be repaired with Vetorep CR520 with clean water before applying the repair mortar. Remove all excess water prior to the application of one coat of acrylic bonding agent Vetobond AB432.
Allow Vetobond AB432 to become tacky before applying the repair mortar.
Mixing
To ensure proper mixing, use a mechanically powered mixer or drill fitted with a suitable paddle. Add 3.5- 4 liters of clean water to a clean container. Then add the powder slowly to the water while mixing continuously with a low-speed mixer/drill (400 - 600 rpm). Continue mixing for 5 minutes until obtaining a uniform consistency.
Placing and Finishing
Apply Vetorep CR520 by a trowel or by hand. Apply the mixed mortar by firm pressing to fully compact the mortar and to ensure good adhesion with the steel reinforcements and the substrate. Finishing and leveling should be carried out initially by a wooden or a plastic float. Final finishing should be carried out using steel float.
For high thicknesses applications vertically and overhead, it is better to apply it by hand gradually in patches with a firm force, this is to ensure the adhesion with the substrate and the subsequent layers for the CR520.
Curing
As Vetorep CR520 is a cementitious based material, it should be cured in a similar manner to concrete by continuous watering and covering with polyethylene sheets.
Cleaning
Clean all tools immediately after application by using freshwater. Clean hardened materials mechanically.
Cut back all damaged and weak concrete to reach sound concrete and/or to a minimum depth of at least 10 mm.
Grit blasted corroded steel reinforcement to remove all rust traces. In case of significant loss in the steel reinforcement cross-section, the steel should be replaced. Remove all concrete forms around exposed steel reinforcements by 25 mm thickness. Saw cut the perimeters of the repair area to a minimum depth of 10mm. Clean the prepared area thoroughly by using a brush and/or compressed air.
Limitations
Apply Vetorep CR520 in a single application for sections up to 20 mm thick in overhead applications, and 75 mm thick in vertical applications. The thickness should not be less than 10 mm deep in all applications.
Vetorep CR520 Contains reins which may cause sensitization by skin contact. Avoid contact with skin and eyes and inhalation of vapor. Wear suitable protective clothing, gloves, and eye/face protection. Barrier creams provide additional skin protection. Should accidental skin contact occur, remove immediately with a resin removing cream, followed by soap and water. Do not use solvent. In case of contact with eyes, rinse immediately with plenty of clean water, and seek medical advice. If swallowed seek medical attention immediately. Do not induce vomiting.
Vetorep CR520 is non-flammable.
Saveto endeavors to ensure that any advice, recommendations, information it may give, is accurate and correct. It cannot accept any liability either directly or indirectly arising from the use of its products, because it has no direct or continuous control over where or how its products are applied, whether or not in accordance with any advice, specification, recommendation, or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.
Hard copies of TDSs are printed once or twice a year, while our technical data sheets are continuously being updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.
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