Surface Finishes

The selection of an appropriate finish is an essential part of pavement design which can materially affect both the performance and overall cost-effectiveness. They typo of finish should be determined in relation to the anticipated service conditions, with particular reference to the type and frequency of loading, impact, abrasion, chemical resistance, and ins some circumstances, other factors such as hygiene, dust prevention, skid resistance and aesthetics. When the pavement is exposed to some forms of aggressive agents, special surface treatments or coatings may be required.

NZS 3114, Specification for Concrete Surface Finishes as well as CCANZ's IB33 : Specification and Production of Concrete Surface Finishes provide information relevant to surface finishes.

Table 1 provides general recommendations on surface finish/finishing techniques on the basis of typical applications, anticipated traffic and exposure conditions.

Typical Applications Office and administration areas, labaratories Light to medium industrial premises, light engineering workshops, stores, warehouses etc Sloping pavements or ramps or high speed traffic areas
Heavy industrial premises, heavy engineering works, repair work-shops,stores and warehouses
Anticipated
Traffic
Pedestrian or light trolleys
Light to heavy forklift trucks or other industrial vehicles with pneumatic tyres   Heavy solid-wheeled vehicles or steel-wheeled trolleys
Exposure
/Service
Pavements to receive carpet, tiles, parquetry, etc Smooth pavements   Pavements subject to severe abrasion
Dry pavements with skid-resistant requirements
Pavements with skid-resistant requirements
Wet and external pavement areas
Finishes Steel float
Steel trowel Broomed/ tyned (coarse texture) or grooved) Steel trowel/ burnished finish (use of special aggregate monolithic toppings)

 

Steel trowel (carborundum dust or silicon carbide incorporated into concrete surface)
Wooden float or Broomed/tyned (light texture)
Broomed/ tyned hessian drag (light to medium texture)