Lightweight aggregates from incinerated sludge ash |
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| Institution: | 1. Université de Lorraine, CNRS, CREGU, GeoRessources UMR 7359, Faculté des Sciences et Technologies Boulevard Aiguillettes, Vandoeuvre-lès-Nancy F-54506, France;2. Université de Toulouse, Géosciences Environnement Toulouse (GET), UMR 5563 CNRS, 14 Avenue Edouard Belin, Toulouse F-31400, France;3. CRPG-CNRS, Université de Lorraine, UMR 7358, 15 rue Notre-Dame des Pauvres, BP 20, 54501 Vandoeuvre-lès-Nancy Cedex, France;4. Institute of Geology and Mineral Exploration (I.G.M.E.), 1st Spirou Louis St., Olympic Village, Acharnae 13677, Greece |
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| Abstract: | A range of artificial aggregates has been developed from incinerated sewage sludge ash. The ash is either pelletized or slabbed and subsequently fired until it sinters and expands to form lightweight products which are later graded for use as aggregates in concrete. From the standard tests conducted on size grading, bulk density, absorption and fracture strength, it appears that both the pellets and slabs are potentially suitable as lightweight aggregates in concrete. Preliminary studies on concrete incorporating these aggregates support this hypothesis. No studies of potential containment release at high temperature was made during these studies. |
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