| 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) |
|
|
