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repairs & grouts

CONCRETE RESURFACER

USER CATEGORY :

DIY TRADES COMMERCIAL

Packaging

  • 20KG

PRODUCT INFORMATION & RESOURCES

DESCRIPTION

CEMIX CONCRETE RESURFACER is a high performance concrete resurfacing product for aged or spoiled concrete. It serves to resurface good quality concrete with a thin coating in situations where the surface is aged, stained, rain damaged, cracked or worn away. Its use serves to prevent the removal & replacement of good quality concrete. It is applied with a steel squeegee, trowel or broom brush finished.

TYPICAL APPLICATION & USES

  • Resurfacing of aged concrete
  • Resurfacing of surface spalled concrete
  • Resurfacing of cracked concrete after undertaking crack repairs
  • Residential driveways
  • Patios
  • Footpaths
  • Shops, Restaurants & Cafes
  • Hospitals
  • Schools
  • Overcoat ‘ugly’ concrete repairs

ADVANTAGES

  • Cost effective
  • High bond strength
  • Flexible
  • Durable

SUBSTRATE PREPARATION

Surfaces should be sound & rough to ensure a good bond. They should be uncoated & clean, free from all contaminants, loose particles, dirt, oil, mould, curing compounds, sealers & paints etc. Acid washing or honing & then water blasting is required to prepare the surface depending on substrate condition. Washing with soap & water blasting may also be required if oil is present. Holes, spalls, low spots, uneven and deteriorated surfaces should be patched with a suitable Cemix repair mortar and bonding agent. The better the substrate preparation & condition the better the end result. The concrete substrate should ideally be at least three months old.

CRACKS IN CONCRETE

Cracks in the concrete substrate must be well repaired with suitable products prior to product application. Seek technical advice if required.

MOVEMENT / CONTROL JOINTS

Honour any control joints in the concrete substrate – do not apply product over control joints. If required create control joints in substrate at suitable locations.

MIXING

Mix full bags of product. Mix the product separately for each coat. Add water to product, not product to water. Mix the product with a drill & paddle thoroughly for at least 4 – 5 minutes. Mix to a pourable consistency. Maximum water addition is 4L of water per 20kg bag. Mix until all cement lumps have been broken down. Use product immediately. Mixing water temperature should ideally be between 15ºC – 22º C.

APPLICATION

Dampen concrete substrate with a light spray of water. Apply the first coat immediately after mixing the product. Use a suitable steel squeegee, trowel or brush to force product into the surface. After the first coat has completely dried, mix up a new batch of CEMIX CONCRETE RESURFACER. Dampen the surface with a light spray of water and apply the second coat in the same manner. A third coat may be applied if required. If a broom finish is required, broom the surface immediately after the final coat of product has been applied. The total finish thickness should be approximately 2mm to 3mm.

POST APPLICATION

Avoid rain damage until the product has set. Protect the product from freezing for at least one day.

COLOUR & STAINING

Contact Cemix for advice on colouring & staining the product.

SEALING

To enhance surface appearance and increase durability, seal the surface the next day with a suitable Cemix clear sealer such as CEMIX PAVSEAL (water based) or CEMIX DRIVESEAL (solvent based for external use only).

TECHNICAL DATA

  • Appearance – sand / cementitious powder.
  • Strength (MPa) – 25MPa @ 28 days.
  • Application Temp – 5 °C – 30°C.
  • Yield / Coverage – Approximately 1m2 for every 2kg of product for two coats. Therefore 20kg will do approximately 10m2 for two coats. A rough substrate surface texture & additional coats will consume more product.
  • Packaging – 20kg
  • Working Time – 40mins @ 20°C

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

LIMITATIONS

Not to be used as a mortar for repairs >3mm deep

STORAGE

Store CEMIX CONCRETE RESURFACER Can be stored in its original container in a dry place well sealed for a period of twelve (12) months after production. Do not store opened bags & pails.

CLEANING

Clean all tools with water & brush immediately after use.