Product Description

Renovation and replacement of deteriorated concrete bridges, substructures, and roadways are of vital concern to highway and bridge maintenance personnel. As the demand for safe and efficient selective demolition work increases, so does the demand for better methods to expedite the demolition process. Conventional methods for removal of deteriorated concrete traditionally include jack hammering. In recent times, however, there has been a decline in the use of this equipment, probable reasons being that new alternatives have emerged and its following disadvantages. DISADVATANGES OF JACK HAMMERING Unnecessary removal of sound concrete along with bad concrete Vibration generates micro fractures in sound concrete Micro fracturing of sound concrete due to vibration Unintentional damage to rebar Uncertainty as to complete removal of deteriorated concrete and corrosive chlorides Vibration injuries in fingers and arms of the operator. It is time consuming Dust formation and noise level are also high PressureJets high pressure water jet system eliminates these negative results by utilizing high pressure water jetting techniques, Hydro-Demolition. The Hydro-Demolition process is successfully utilized to remove deteriorated concrete, leaving sound concrete with a rough profile, perfect for bonding the newly poured overlay. Hydro demolition is a relatively new method of removing select portions of a hardened concrete structure. Hydro-Demolition is a technology that uses extremely high pressure water jet that is capable of removing concrete while not damaging the rebar. The practical application of this technique makes it an extremely effective and efficient method of concrete removal. This is due to two main factors, one being the direct impact of the water jet on the surface. The other is the porous nature of concrete, the high pressure water is forced into the tiny cavities and cracks within the concrete mass, causing it to fracture and split. Hence, this high pressure water jet equipment breaks up concrete by disintegrating the cement matrix between aggregates. The demolishing effect can be tightly controlled to a desired level of removal, ranging from light scarification of the surface to deep penetration of the structural element. The use of the hydro demolition process has several advantages over conventional concrete removal methods, such as jack hammering. ADVATNAGES OF HYDRO-DEMOLITION Selective Material Removal The variable parameters of the technique, water pressure, jet size and speed of application, make it possible to demolish and remove concrete in a very precise and controlled way. These variables enable selective removal of deteriorated or de-laminated concrete, as the jet stream penetrates the cracks and faults in the degraded material more quickly, leaving the sound concrete intact. Accurate Material Removal The equipment can also be set to remove concrete to predetermined depths. These capabilities make it a very suitable method of enablin