Used by the company Wegarten inc. concrete pavement restoration techniques solve the problems shown in the photos below, existing deteriorated concrete pavement can be effectively modified to create an in-situ structural layer ready to accept an asphalt or rigid overlay.
Crack & seat and rubblization decreases the cost of materials and their transport, traffic technology on the construction site. The risk and difficulties in traffic are therefore more environmentally friendly than other methods of repair of the surface.
Wegarten Company offers professionals in the field of infrastructure around the world quickly and ecological carrying out the work. Company Wegarten always performs work in accordance with specifications, on time and within the set cost.
Innovative and unique projects are made with Wegarten Guillotine and Multi Head Badger Breakers ®) with three modern techniques of recycling on construction place. These are very fast processes in which existing cement concrete layer is used as an integral part of the new, reconstructed, complex surface.
The technology requires inducing fine vertical cracks in the existing concrete pavement to create specified segment sizes while maintaining aggregate interlock. This reduces horizontal slab movement caused by temperature and moisture changes thus reducing strains at the bottom of the asphalt overlay which lead to reflection cracking. This process has proven to delay the onset and substantially reduce the extent and severity of reflection cracking.
Rubblization eliminates reflection cracking by breaking the existing concrete pavement into small particles thus minimizing the horizontal movement at existing joints and cracks due to temperature and moisture changes which lead to reflection cracking. Rubblization is often specified when a concrete pavement reaches the end of its service life and is applicable for jointed reinforced, continuously reinforced, and non-reinforced concrete pavement. The design thickness of the asphalt overlay will generally be greater than that over a cracked & seated layer of similar thickness because of a greater reduction of the pavement's structural strength.
Although Cracking & Seating and Rubblization are now widely used, full-depth reconstruction of deteriorated concrete pavements is still common. Badger Breakers® are well-suited for this application as the first step in the process of recycling the old concrete pavement.
The broken concrete is then removed and loaded in trucks for hauling to a crusher or in some cases loaded directly into an on-site, portable crusher. If the concrete is continuously reinforced, the rebar is raked out of the broken concrete and recycled prior to removing the concrete.
The MHB Badger Breaker® is often used for removal breaking when small concrete particles are desired or if mesh reinforcement is to be removed from the broken concrete prior to recycling the concrete. The MHB is also used in urban and other sensitive areas because the 16 lighter hammers produce lower vibration levels than the single, heavier 8600 hammer.
The 8600 and MHB are also used in tandem when the thickness and strength of existing concrete and base layers require the "hard hit" of the 8600 for full-depth breaking and the multiple hammers of the MHB for the production of smaller broken concrete particles.
Concrete pavement repair projects was done in the U.S., Canada, South America, the Caribbean, Europe, South Africa, Afghanistan and China. Their size was different from small repairs in the cities to the large contracts for repairs of highways and runways.