Recycling white materials
Plant recycling of pavement materials

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C5620 V1 Article

Recycling white materials


Plant recycling of pavement materials

Author : Jean-Pierre SERFASS

Publication date: August 10, 2008 | Lire en français

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2. Recycling white materials

All "white" road materials, i.e. untreated gravel, gravel and sand treated (with cement, hydraulic road binder, slag, etc.) and cement concrete, can be recycled in the form of aggregates.

2.1 Preparation and characterization

Recycling untreated gravel (GNT) in a plant is extremely rare, as in-place recycling is much more economical.

Gravel or sand treated with hydraulic binders is relatively uncommon. The material can be removed in one of two ways: either by fracturing, i.e. reclaiming the slabs with a loader or shovel, followed by crushing, or by milling. Both crushing and milling produce large quantities of fines with these materials. Crushing produces a very hollow O/D, which is crested at 14,...

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