Properties-

Density : 1.00 to 1.01 g/cc

Color : Milky White

Water loss (ASTM C156) : <0.55 kg/sqm

Reflectance (E1347) : >60%

Drying time (ASTM C309) : < 4 hrs.

Minimum application temperature : 100C

Advantages

 Single application : Forms moisture barrier for whole of the curing period.

 No other curing necessary : Eliminates use of water, hessian or sand completely.

 Reliable : No risk of erratic or poor curing and ensures that cement hydrates efficiently.

 Ensures hard-wearing surface : Minimizes risk of drying shrinkage, cracks and dusty surfaces.

 Easy and safe spray application: Non-toxic and nonflammable.

Standards compliance -

Curing efficiency : Concure WB White curing compound complies with the internationally recognised ASTM C309, Type 2, Class A. 

Equipment-

The preferred and generally used equipment is a knapsack sprayer of the type commonly used in horticulture or pest control. The ideal type is a knapsack sprayer with a capacity of between 5 - 10 litres fitted with a 2.0m lance and adjustable spray nozzle.

Equipment cleaning-

Immediately after use the spray equipment should be cleaned out thoroughly with fresh water. If the spray nozzle becomes blocked with wax particles these can easily be removed using white spirit or similar fl uid.

Application-

Exposed concrete slabs : Concure WB White should be spray applied on to the newly placed concrete slab as soon as possible after it is free from visible surface water, e.g. typically 1 to 2 hours after placing. Shuttered and precast concrete : Concure WB Clear curing compound should be spray applied to all surfaces as soon as formwork has been removed or the element remoulded.

In all cases the nozzle of the spray should be held approximately 450mm from the concrete surface and should be passed back and forth to ensure complete and even coverage. The pump pressure should be maintained at a level to produce a fine spray ensuring complete coverage of the surface. Rate of application depends on requirements but is typically within the range of 200 to 285 ml/sqm.