6. Mixed lime treatments – hydraulic binders
This type of treatment is mainly used to create subgrades, and sometimes to create TSP.
The mixed treatment operation involves pre-treatment of the materials with lime, prior to treatment with hydraulic binders. It applies to clayey materials, for which it is first necessary to flocculate the clay fraction using quicklime, and then to promote setting with the hydraulic binder – more rarely, to lower the water content of the material beforehand.
When the technique used is hydraulic binder treatment in a mixing plant, lime pre-treatment is also applied to facilitate the flow of materials into the feed hopper.
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Mixed lime treatments – hydraulic binders
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