Aquajet, a global leader in Hydrodemolition machine manufacturing, offers a lineup of Hydrodemolition robots and attachments for improved surface preparation. Aquajet’s series of Rotolance attachments effectively clean, remove and roughen concrete. This leaves a better bonding surface that meets international guidelines for the majority of concrete surface profiles (CSP). Rotolance attachments pair with the company’s Aqua Cutter 410 and 710 series robots, the new Aqua Cutter 750V, Ergo System and Aqua Spine, providing increased productivity and enhanced worker safety for surface preparation applications over manual methods such as sandblasting, hand lancing or pneumatic breaking.
“Proper surface preparation is necessary for long-lasting concrete restoration,” said Roger Simonsson, Aquajet managing director. “Hydrodemolition not only provides a superior bonding surface, but it’s one of the only high-productivity methods that doesn’t cause microfractures. We developed our Rotolance attachments to maximize these benefits.”
Importance of surface preparation
Subpar surface preparation can have a negative impact on the integrity of the structure and lead to premature failure, increasing repair intervals and overall costs. International Concrete Research Institute (ICRI) technical guideline 310.2R-2013 pertaining to selecting and specifying concrete surface preparation identifies Hydrodemolition, sometimes referred to as water blasting or water jetting, as one of few methods capable of achieving CSP 3 through 10. This versatility allows Hydrodemolition contractors to efficiently achieve CPS 3, suitable for some thin film and high build film coatings, all the way up to CPS 10, which is necessary for concrete overlays and repair materials greater than .25 inches (6 millimeters). Aquajet’s Rotolance attachments bring the power of Hydrodemolition to surface preparation applications, allowing operators to achieve CPS 3 through 10 with the same machines for increased utilization and versatility, leading to enhanced overall return on investment.
How it works
Aquajet’s Rotolance attachments use a rotating spray bar with multiple nozzles. With hydraulic both operation and rotation speeds up to 1000 RPM, the spray bar easily adjusts to meet surface preparation requirements for a number of profiles. Combined with the adjustable traverse speed of Aquajet’s Hydrodemolition robots, Rotolance attachments provide precise results in horizontal, vertical and overhead applications. Depending on pump flow, pressure and desired profile, Rotolance attachments can achieve production rates in excess of 500 square feet (46.5 square meters) per hour.
Contractors with a lightweight Ergo System can choose from two Rotolance attachments — the Rotolance 130 and Rotolance 130S — for maintenance and removal applications at bridges, harbors, water treatment facilities, reservoirs and tanks. The attachments offer new versatility for the Ergo System. They are also compatible with the Ergo Climber and Ergo Spine. These provide access in either confined or hard-to-reach places. The 130S is also equipped with a suspension system. This allows it to follow either uneven or curved surfaces such as ship hulls and storage tanks.
Features and benefits
The Rotolance 1000 and Rotolance 2500 pair with Aquajet’s Aqua Cutter robots. They both cover a surface diameter as wide as 14 inches (360 mm). A vacuum port allows contractors to connect a vacuum system for water recovery, ensuring safe, environmentally friendly operation. Additionally, both Rotolance attachments can replace the regular cutting heads on the Aqua Spine, allowing operators to remove concrete that would be difficult or impossible to reach with a robot alone. The Rotolance 1000 is rated for a maximum pressure of either 1000 bar or 14,500 PSI. The Rotolance 2500 is rated for either 2500 bar or 36,250 PSI.
“Doing more with less equipment is important on the jobsite and on the budget,” Simonsson said. “We’re always looking for attachments and options to make our Hydrodemolition robots more versatile, so customers can increase service offerings and grow their operations without having to invest in multiple machines. With a Rotolance attachment, they can achieve the widest range of surface profiles with minimal equipment.”
For further information on Aquajet’s Rotolance attachments and full line of Hydrodemolition and surface preparation equipment, visit www.aquajet.se.
Aquajet, which was acquired by Brokk AB in 2016, is known as the industry leader in Hydrodemolition machines and solutions, both in terms of quality and volume. The company’s headquarters and production facilities are in Holsbybrunn, Sweden. Similar to Brokk, Aquajet sells globally. For more information: Aquajet, Brunnsvagen 15, SE-574 53, Holsbybrunn, Sweden; +46 383 508 01; [email protected]; www.aquajet.se; YouTube; Facebook; LinkedIn; Instagram and Vimeo. For more information in North America: Brokk Inc., 17321 TYE Street SE, Suite B, Monroe, WA 98272; 800-621-7856; [email protected]; www.brokk.com; Facebook; YouTube; LinkedIn and Instagram.