Article | REF: C5375 V1

Utilization of industrial by-products -Fly ash - Site experience feedback

Authors: Pierre ROSSI, Ludovic GAVOIS, Guy RAOUL

Publication date: February 10, 2011

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ABSTRACT

Fly ashes are coal combustion residues in thermal power plants. These products belong to different categories according to the operating modes of the plants which produce them and the techniques implemented for their collection. Fly ashes possess remarkable properties such as their pozzolanic and hydraulic activity which makes them attractive notably for construction and groundwork as binders or aggregates. Similarly, their fineness and form characteristics multiply the possibilities of usage. The significant amount of site experience feedback on the utilization of these industrial by-products are extremely instructive.

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AUTHORS

  • Pierre ROSSI: Doctorate in geology. Geotechnical manager of the "Grands Travaux de Terrassement (Razel)" unit.

  • Ludovic GAVOIS: Manager of Vinci's geotechnical department – Construction Terrassement

  • Guy RAOUL: Engineer from the École spéciale des Travaux publics; former Director of GTM Construction - Currently Chairman of the French Earthworks Standardization Committee

 INTRODUCTION

This article follows on from the two previous articles [C 5 373] and [C 5 374] , devoted to fly ash, by presenting feedback from recent worksites, representative of the diversity of uses for these industrial by-products.

These sites were cited in a list of references at the end of the article [C 5 374] .

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Use of industrial by-products – Fly ash