As garage restoration contractors we provide restoration and traffic topping systems to restore the capacity of the concrete and protect it from further chloride attack.

Normal procedures include for the replacement of localized deteriorated concrete and reinforcing steel, the necessary mechanical and electrical work, waterproofing, traffic topping installation and landscaping.

Pouring concrete

The traditional means of removing deteriorated concrete has included the use of jackhammers and sandblasting equipment. However, a newer and more efficient removal technique has recently been introduced into the North American market. Hydrodemolition is a technique that uses a high pressure water jet to remove areas of loose deteriorated concrete.

Expansion joint on wall

The hydrodemolisher is calibrated to remove concrete to a specified depth or specified strength. The specified strength method will automatically remove any unsound material up to a specified strength, regardless of the depth. This often results in higher than-anticipated quantities of removed concrete. The machine has the capacity to remove the complete slab depth, in most cases. The process also removes any corrosion products from the reinforcing steel and thus eliminates the sandblasting process, which is otherwise required. It will not, however, affect sound steel, damage-embedded deckwork, conduit, or electrical wires will generally remain intact.

Hydrodemolisher at work

	Hydrodemolition produces an aggressive profile in the concrete, thereby allowing a significantly greater and stronger surface area for bonding. Unlike jackhammering, the surface is not "bruised" by micro-cracking caused by the hammer's impact. As sandblasting is not necessary, there is no dust residue which might impede the bond. Also, there is no damage to the concrete due to the vibration of the reinforcement which can occur from jackhammering.
	Hydrodemolition eliminates the need for decisions by the operators as to the soundness of material left, since the unsound material is removed according to the calibration of the machine. This process increases the general quality of the repair, while avoiding the unnecessary removal of sound material and the need for sophisticated quality control.

Hydrodemolisher at work underside of bridge

	One of the most important advantages of the hydrodemolition technique is the relative quietness of the operation. While the noise level at the work site is only marginally less then jackhammering, there is minimal vibration. In other words, the hydrodemolition noise level is dampened, whereas the jackhammering noise level is vibrational and can be heard throughout the building.
	A further advantage to the client extends from the speed in which the machine operates. Hydrodemolition can cover 90 to 100 sq. ft. per hour, as opposed to 5 to 10 sq. ft. per hour for each jackhammer. As noise does not restrict the work to specific times of operation, the repairs can be complete quickly and thereby minimize down-time losses and inconvenience to the client.
	Hydrodemolition represents the state of the art in concrete repair technology. It allows for significantly higher bond strengths than those obtained from conventional jackhammering and epoxy bounding. The quietness of this operation and lack of surface bond vibration make hydrodemolition an advantage for noise-sensitive regions such as office buildings and residential apartments. The rapid operation and the possibility of working extended shifts enable the repairs to be completed more rapidly, thereby reducing down-time.