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Conjet AB Hydrodemolition uses a high pressure water jet to remove concrete from sensitive structures such as bridges, parking decks, dams, canals, tunnels, quays and jetties in conjunction with concrete repair. Conjet robots and Jetframes are also used for other waterjet applications such as scarifying or roughening surfaces, cleaning and paint removal. High-pressure water jetting equipment is extremely efficient at removing damaged concrete. Carl Strömdahl, President of Conjet AB, outlines the development of this increasingly popular concrete repair technique. Removing damaged or poor quality concrete using pneumatic and hydraulic breakers or road milling machines, is universally accepted as being inefficient and even damaging to the structure being repaired. These once favoured techniques are now outdated and indiscriminate as they remove and leave both good and bad concrete and cause damage to the remaining healthy and sound concrete and steel reinforcement, as well injuring jackhammer operators. Conjet is now the world's leading specialist in the design, development and manufacture of remotely operated, computer controlled high-pressure water jetting hydrodemolition machines. The firm makes an extensive range of Robots. All Conjet machines have been designed to comply with the stringent European regulations and carry the appropriate CE marking. Conjet Robots are now available in cutting widths up to 7 m, can remove concrete to depths of up to 500 mm and can blast away between 0.5 m3/h to 1.5 m3/h, depending on the machine and strength of concrete. High pressure water jetting High pressure water jet equipment selectively removes the different layers of concrete and does not cause any new damage to the roughened surface or create micro cracks in the remaining healthy...... Concrete demolition Conjet's method is called selective hydrodemolition. What distinguishes Conjet and true selective hydrodemolition from...... Hydro demolition When the decision of partial or full demolition of a concrete structure is made, the process of selecting a demolition method starts. To be considered are local circumstances influencing the process as well as the kind and volume of the building...... |
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