Demolition and recycling contractors know the headache: you’ve got piles of concrete and brick rubble to process, but the site is tight, logistics are messy, and the material is often contaminated with steel.
ALLU is responding with the ALLU Concrete Screening and Crushing Bucket, a new excavator-mounted attachment designed to crush demolition rubble on-site – including material that typically causes slowdowns and rejections.
ALLU R&D Project Manager Antti Rautamies said contractors don’t need another machine to manage on a crowded jobsite: “they need a practical way to turn rubble into usable material with the excavator they already have.”
“This bucket is built for the real world: fines-heavy material streams, tight spaces, and reinforced concrete that doesn’t arrive ‘clean’,” he said.
The ALLU Concrete Bucket is designed for excavators in the 25-45 tonne class and crushes demolition rubble such as concrete, bricks, and asphalt (RAP). It targets scenarios where bringing in a separate mobile crusher is inefficient, helping contractors process material where it’s generated.
The bucket can also be used to increase a mobile crusher’s capacity by pre-crushing and feeding with the same attachment at demolition or recycling sites.
The bucket features a changeable counter blade setup that supports output sizes of 0–50mm and 0–100mm. That means crews can aim for the right balance of fragment size and productivity without changing the whole flow of the job.
ALLU’s design focus is simple: build it for daily work and make wear part changes straightforward. The bucket includes a heavy-duty frame structure with a 40mm cutting edge and 30mm side cutters, designed to withstand breakout forces of excavators up to 45t.
The crushing drums and blades are still under the final R&D work, but many successful tests have been conducted in real-life surroundings, utilising multiple innovative ALLU drum and blade configurations. A counter blade structure forms the crushing chamber, and the bucket uses two alternative rotating directions to support a continuously effective crushing operation while screening fines quickly through the bucket.
See the bucket for yourself at the world’s largest construction event, CONEXPO-CON/AGG, which will be held at Las Vegas from March 3-7. Find ALLU at West Hall, site W42974.