Comparisons
Precast Kerbs vs Cast-on-Site Kerbs
Technical comparison covering performance, manufacturing, durability, installation and other relevant criteria for precast kerbs vs cast-on-site kerbs.
| Criteria | Precast Vacuum Wet Pressed Kerbs by VYARA | Cast on site Kerbs/ Other kerbs |
|---|---|---|
| Strength/Durability | Very high strengths, complying with requirements of international standards | Dependent on agency and workers. Concrete characteristics will not match up. |
| Evenness/Looks | Very evenly sharp and high quality looks- which will immediately enhance the profile of the project. | Dependent on agency and workers, but can never match up with the finishing of Wet pressed kerbs |
| Drainage solutions | Lot of drainage solutions are possible in the kerb and water dished channel shapes- each with excellent performance and aesthetics | Very limited drainage options, none of which look very good. |
| On site cleanliness | The profiles, sections and detailing help in maintain a very clean site | Sites with onsite kerbs are little more difficult to maintain as water drain and cleaning details are usually not provided for |
| Cost | Lower total cost | Higher total cost- as typically kerbs are required to be plastered/painted |
| Reparability | Very easy to repair as only the damaged piece needs to be changed | Local repairs are difficult and always look bad |
| Environment/Sustainability | Lower Cement consumption, and no usage of disposable Steel or wood forms for casting the kerbs | On site casting requires, higher cement content, larger section and often disposable steel and wood forms, all of which increase usage of scarce natural resources |
| Profile flexibility- last minute changes | Lots of profile and size options are available- last minute changes are possible | Last minute changes are generally not possible and if done will involve a lot of compromises |
| Safety solutions | Special profiles in good quality kerbs increase safety of the pedestrians as well as the vehicles | Very limited profiles are possible |
| Disability Access | Lot of options such as dropper kerbs, bull nosed kerbs etc. greatly enhance the streets making them more friendly for the elderly and the disabled | Currently options for the disabled and elderly are not available |
| Speed of work | No onsite curing required- site can be commissioned earlier | On site curing required. Impact to kerb in the initial days can cause severe damage to kerbs |
| Marking, Painting | Good quality of paint is easily possible | Painting will require plastering first- also high water absorption of concrete will require much earlier repainting. |
