Cracking and Seating Concrete
Prevention of Cracking in Road Surfaces and Pavements
To reduce the proximity of reflecting cracking on concrete road ways, we provide Cracking and Seating repair system which in fact is the best in the country and in budget. We give the service to the concrete slabs with a minimum thickness of 100mm. Apart from concrete slab works; we offer it for reinforced concrete.
While fixing it, we crack the concrete, and set back the cracked parts of the concrete beneath the base so that these new cracks may cause expansion or contraction which may reduce reflective cracking in the coming future. This process also manages to counter the faults or voids if any present at the lower side of the asphalt concrete roads.
Removing the existing overlay, hairline fractures with 45degree are done meanwhile which would make the road flexible, Next overlay is applied @30 to 40 mm for roads with moderate traffic and 60 to 70mm for the busiest roads.
We provide this service at a cheaper rate which gives you a profit of about 80% in comparison to re-construction.
Cracking and Seating is a practical and economical method of preventing reflective cracking in asphalt overlays on concrete roads. Crack and Seat is one of the most popular carriageway repair systems in the UK and Ireland.
The Crack and Seat process can be used where the existing concrete slab is a minimum of 100mm thick and of Pavement Quality Strength.
Cracking and Seating is also suitable for reinforced concrete.
What is Reflective Cracking?
Reflective cracking is caused by movement or faults in the concrete slab construction beneath reflecting into the asphalt overlay. Causes include voids in the sub-base, thermal expansion/contraction, rocking road slabs or overload of the rigid pavement. Cracking and Seating helps alleviate these problems
How does Crack and Seat work?
The concrete road slabs are cracked and seated back onto the sub-base. These new cracks then accommodate some of the thermal expansion/contraction thereby significantly reducing future reflective cracking.
- Existing overlay is removed
- Multiple hairline 45° fractures are induced which converts a rigid concrete road into a semi-flexible road base
- Overlay is then applied – a minimum of 30/40mm for light to moderately trafficked roads, and 60/70mm for busier roads and industrial estates
- Minimal disruption (no need for road closure)
- Cost-effective (reduces overlay thickness) – typically 80% cheaper than reconstruction
- Environmentally friendly – uses existing material
- Quick – up to 1,500m2 per day
- Finds voids and soft spots
- Reseats the concrete back down onto the sub-base
- Stops rocking and moving slabs
- Stops traffic vibration transmission to dwellings
- No adjustments of kerblines, footways, thresholds, height restraints, barriers or street furniture