Repair and Grout

Description:

Cemix® Repair & Grout is a fast setting, versatile, non shrink cementitious grout and patching mortar for small projects. It can be used as a pourable grout or patching mortar depending on the amount of water added. Characteristics include versatility, fast setting times, high early strength, shrinkage compensation, excellent substrate adhesion and durability.

Typical Application / Uses:

  • Numerous small volume grouting and patching applications.
  • Repairs to old and new concrete.
  • Anchors, bolts, rods and dowel grouting.
  • Structural void filling.

Advantages:

  • Just add water.
  • Pourable or trowel on options.
  • Fast setting.
  • Short curing time.
  • High early strength.
  • Trafficable after 6 hours (weather dependent)
  • Shrinkage compensated.
  • High bond strength.
  • Durable

625gm, 1.25kg & 5kg

Substrate Preparation:

Substrates should be clean and free from all contaminants, loose particles, coatings, curing compounds, dirt, mould, soft efflorescence etc. Substrates must be sound, rough and dampened to ensure a good bond.

Mixing:

Mix whole containers of product where possible. Mix thoroughly for 2 minutes using a drill and paddle mixer. In very hot weather use chilled mixing water. Do not mix more product than can be mixed, placed and finished in 15 – 20 minutes. Use product immediately after mixing.

Pourable Grout: Add approximately 120ml of water per kg of product to the water and begin mixing. Add the rest of the water slowly whilst mixing until a pourable consistency is achieved. Typical total water for a pourable to fluid consistency is approximately 150ml for every 1kg of product.

Trowel On Mortar: Add approximately 100ml of water per kg of product to the mixing container and then add the product to the water and begin mixing. Add the rest of the water slowly whilst mixing until a pourable consistency is achieved. Typical total water for a mortar consistency is approximately 125ml for every 1kg of product.

Application:

Pourable Grout: Typical application depths are 5mm – 150mm. Dampen the concrete substrate with water just prior to mixing. Avoid any water ponding. Pour Cemix® Repair & Grout into place while the substrate is still damp. Application is from one side only completely filling the void and avoiding air entrapment. Rod the grout to compact if required. Trowel finish as required.

Trowel on Mortar: Typical application depths are from 5mm – 40mm. Build to 25mm on vertical surfaces and 40mm on horizontal surfaces. Apply product in layers for thicker patching. Always apply consecutive layers to a roughen and Cemix® Multibond primed preceding surface. Dampen the concrete substrate and then thoroughly prime it with Cemix® Multibond brushed neat into the surface to obtain a wet bond while the Cemix® Multibond is still wet or tacky. Application is from one side of the patch to the other completely filling the void. Firmly compact the mortar into the void. Trowel finish as required.

Curing:

Cure product thoroughly by keeping it wet after it has set for at least 6 hours and preferably for 24 hours. Avoid freezing.

Technical Data:

Appearance – Sand/Cement grey powder

Strength (MPa) – 40MPa @ 6 hours; 50MPa @ 24hours,; 60MPa @ 28days; 3.2L of water.

Application Temp – 1oC - 25oC

Yield / Coverage – As a grout 5kg of product will yield approximately 2.64L or 0.00264m3. As a mortar 5kg of product will yield approximately 2.50L or 0.000250m3.

Bond Strength – >3MPa

Thermal Coeff. Of Exp – 9.0 x 10m-6 mm/mm/oC

Chloride Ion Permeability – <1000 coulombs

Working Time – 30 minutes at 20oC

The data shown above reflects typical results based on laboratory testing under controlled conditions. Reasonable variations may occur on site.

Storage & shelf life

Can be stored in its original container with lids tightly sealed in a cool place away from direct sunlight for a period of 6 months after production.

Cleaning:

Clean all tools with water & brush immediately after use.

Precaution:

This is a fast setting product. Do not mix more product than can be mixed, placed and finished in 15 – 20 minutes. Do not apply product onto surfaces less than 1oC and more than 25oC. Do not use Cemix® Repair & Grout in temperatures less than 1oC and more than 25oC. In very hot weather use chilled mixing water.

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