Swedish-based Conjet has spent more than 35 years on innovation and engineering around Automated Concrete Removal – ACR™ using hydrodemolition. Conjets mission has always been to develop a solution that removes concrete for restoration of structures in a safe manner, where no micro-cracks are created, leaving a surface ideal for bonding. The soultion is called ACR™ – Automated Concrete Removal.
Automated Concrete Removal (ACR™) is a method utilizing robotic technology to remove concrete from building structures such as bridges, parking decks, dams and tunnels, using high pressure water – hydrodemolition.
Hydrodemolition technology ensures that no micro-cracks are created during the concrete removal process and provides an ideal surface for bonding of new concrete, while the hydrodemolition robot secures the quality and consistency of the removal process.
Using ACR™ fully automates the operation of concrete removal, allowing you to provide a safe working environment and increase production efficiency. In just one day, a single Conjet ACR™ robot removes the same amount of concrete as up to 25 operators with jackhammers. Even better, the ACR™ robot significantly limits the noise and eliminates dust and vibrations caused by conventional jackhammer methods.
KEY BENEFITS WITH AUTOMATED CONCRETE REMOVAL (ACR™)
- Safe. All operations can be controlled from the ONE system wireless control, leaving the operator out of harm’s way.
- Reliable. 35+ years of innovation and engineering has resulted in solid knowledge and experience of successful concrete removal on hundreds of structures.
- Automation. The Conjet ONE control system allows operators to easily set removal parameters.
- Sustainable. With selective removal, only damaged concrete is removed, without leaving micro-cracks.
- Allows for either selective and non-selective removal. From scarification to deep removals and even through slab.
- Ease of use. State of the art GUI and reliable components.
- Versatility. Repositioning for another type of work is done in minutes. From the reach and stability of the robot to the available accessories ACR has you covered.
- Cloud connectivity. Always connected to the cloud. The operator can have both the robot and powerpack at his or her fingertips.
THIS IS HOW ACR™ WORKS
After completing the start-up routine, the operator can load a saved set of parameters or enter new parameters on the ACR™ robot, either directly on the robot’s display or using the handheld remote control. The operator then positions the robot and starts the automated concrete removal process from a safe distance of 15-30 feet (5-10 meters).
The robot then operates autonomously according to the chosen parameters, working its way in a straight line, in a curve, or in a circle, while the operator monitors and supervises the process.
WHY AUTOMATED CONCRETE REMOVAL – ACR™
WORK AND HEALTH SAFETY
The biggest challenge on all sites where concrete is being removed, or even demolished, is to secure work and health safety for the operators.
Using ACR™ hydrodemolition robots to get the job done is a way to secure a safe working environment for the operators.
As with all automated solutions, the ACR™ robot is programmed to do the job according to specification. Whether it is to remove the concrete down to a certain depth or quality, the ACR™ robot will prepare a surface optimized for bonding.
The preferred method for ACR™ robots is to remove concrete using a high-pressure water jet – or hydrodemolition.
This is a sustainable way to remove the concrete from any structure where no micro-cracks are created, and therefore the remaining structure does not need further inspection or analysis. It extends the useful life of the structure. Eliminates vibrations and dust; dramatically reduces noise.
EASE OF USE
Once properly trained, the operator will find the ACR™ robots easy to use with built-in operator guides, instructions, and visual feedback on the settings.
ACR™ robots are engineered to get the job done, no matter if the surface is horizontal, vertical, cylinder shaped – or all of the above. The time it takes to re-program the robot is minimal, and with a wide variety of accessories available, you can get any job done using the same robot without the need for rebuilding.
The ACR™ robots are connected to the cloud. Conjet Connect allows you to monitor real time data, store data and can over time support you in optimizing your fleet’s efficiency.
SAFETY FIRST! – ACR™ AND SAFETY
One of the biggest challenges on all sites where concrete is being removed, or even demolished, is to ensure the health and safety of the workers.
Using ACR™ robots to get the job done is a way to keep a safe working environment for the workers. The robots are operated via the Conjet ONE control system, allowing all operations to be configured and monitored from the radio remote control box at a safe distance from the robot.
CONJET ONE FOR SAFE, AUTOMATED OPERATIONS
The ACR™ robots can be configured from the display on the robot itself, or from a distance using the user-friendly radio-remote control box. This results in shorter start-up time and increased operational efficiency.
The Conjet ONE controls not only the robot, but it communicates with the high-pressure pump.
Even if the ACR™ robots allow for fully automated operations, the robot requires reactivation from the operator in a set time interval to continue the job. Failure to do so will bring the high-pressure pump to idle position, which in turn stops the robot. The reactivation is easily done from a distance by touching the hand-held control-unit.
Every ACR™ robot is delivered with a daily checklist on items that should be signed off on by the operator before starting the shift.
By using the checklist, the on-site safety officer or supervisor can ensure that work safety regulations are being followed with regards to the robot, as well as maintaining minimum downtime and sufficient maintenance of the robot.
NOISE AND VIBRATIONS
The ACR™ robots are built around hydrodemolition technology, using high-pressure water to remove the concrete. This technology is much quieter than traditional concrete removal and demolition technologies. It doesn’t create any vibrations, and therefore improves the overall working site environment. Traditional jackhammers cause vibrations in the structure and that disturbs others on multiple floors.
This makes ACR™ the optimal solution for sites located in a building with residences and/or offices.
SAFE FOR THE STRUCTURE
Hydrodemolition technology is the preferred technology for restoration of concrete structures as it creates zero vibrations and zero micro-cracks. Moreover, the surface left after removal is ideal for bonding. This results in a longer structure life after repair, which in turn gives a better return of investment for the owner.
OPTIMIZED UPTIME AND PRECISION – ACR™ AND RELIABILITY
Once the job is defined, and you have been awarded the contract to do the project, the real challenge begins. How do you ensure the job is done in a safe way, within the agreed timeframe and budget?
MINIMIZED DOWN TIME
If ACR™ is the chosen method for restoration, downtime is automatically minimized. The robots used are very reliable, which means minimal unplanned downtime due to breakdowns.
The ACR robot is highly efficient thanks its multipurpose design, as the time it takes to shift from one surface to another (horizontal to vertical) is done by the operator using a handheld remote control. So, both planned downtime and unplanned downtime are greatly reduced.
ACR™ uses hydrodemolition as the method to remove concrete. This allows the owner of the structure – and in the end the operator monitoring the robot doing the work – to choose between selective and non-selective removal. Selective removal means that the ACR™-robot is configured to remove the concrete of a certain quality or compressive strength (measured in MPa or psi), whereas non-selective removal means removing a certain depth of the concrete surface. No matter which option is preferred, the ACR™ robots will deliver the required results leaving a surface ideal for bonding.
SERVICE & SPARE PARTS AVAILABILITY
Conjet, the provider of ACR™ robots, has a global network of certified partners and distributors, ensuring that your robot is well taken care of and that downtime is kept to a minimum.
CERTIFY YOUR OPERATORS
To optimize the uptime for the ACR™ robots, it is also advised to certify operators with Conjet University. The operators will not only be trained on how to configure the robot to get the desired results, he/she will also be trained on the safety routines required at the beginning of every shift as well as preventative maintenance, troubleshooting and replacement of consumables.
The ACR™ robots are all prepared with Conjet Connect – a feature that collects data on the operations being performed. By analyzing this data, you can get in-depth knowledge on robot performance. This knowledge can be used to optimize your stock of consumables, plan services and in the end, lead to increased uptime.