New ALLU Concrete Screening and Crushing Bucket for Rebar-Contaminated Demolition Rubble

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.

“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,” said Antti Rautamies, R&D Project Manager at ALLU. “This bucket is built for the real world: fines-heavy material streams, tight spaces, and reinforced concrete that doesn’t arrive ‘clean’.”

Built for On-Site Demolition Processing Where Mobile Crushers Don’t Fit
The ALLU Concrete Bucket is designed for excavators in the 25-45 t class and crushes demolition rubble such as concrete, bricks, and asphalt (RAP). It targets scenarios where bringing in a separate mobile crusher is inefficient – or simply not possible – helping contractors process material right 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.

Handles Rebar and Steel Contamination without Damage
Steel in the feed is one of the fastest ways to ruin productivity. The ALLU Concrete Bucket is designed to handle steel and rebars in the material, helping keep the job moving and reducing “stop-and-clear” time that can kill production on demolition work.

Different sites and different next steps need different outputs. The bucket features a changeable counter blade setup that supports output sizes of 0–50 mm and 0–100 mm. That means crews can aim for the right balance of fragment size and productivity without changing the whole flow of the job.

The bucket is designed for exceptional production capacity with high fines content, with processing capacity up to 100 t/h and max feed size 300 mm (site conditions and carrier will affect results).

Heavy-Duty Structure and Serviceable Wear Parts
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 40 mm cutting edge and 30 mm side cutters, designed to withstand breakout forces of excavators up to 45 t.

The crushing drums and blades are still under the final R&D work, but many successful tests have been conducted in real-life surroundings, utilizing 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.

The ALLU Concrete Bucket is still under final testing and will be available in the market in 2026.

ALLU is a family business that designs and manufactures screening and crushing buckets for the processing, separation, sorting, mixing, and crushing of materials. Typical applications include soil and waste recycling, the treatment of contaminated soil, and the transformation of waste into usable materials.

For over 40 years, ALLU has provided innovative solutions and expertise in the field of material handling. With a strong commitment to customer satisfaction and continuous improvement, ALLU has established itself as a reliable partner in various industries worldwide. The company’s headquarters are in Finland, and it operates globally with over 100 local dealers in more than 30 countries.

Source: ALLU Finland Oy

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