Utilisation des calcaires du Bajocien lorrain en techniques routières

Abstract : This work looks at the use of aggregates taken from limestone formations in the Lorraine Bajocian banks for road subbases. Economic studies show that the use of carbonate rock keeps growing in Lorraine, surpassing traditional materials to the point of being the major resource for road building. This manuscript displays how these materials don't cause any particular technical difficulties in this field even though they have a wide range of aspects. However, the formulation must be well adapted and binder use is preferable. The limestone from massive rock has good adhesion properties with the matrix, especially if the hydraulic binder contains slag. A kinetic study of the setting of these mixes proves that standard equivalence coefficients, for the estimation of final performances, used now are not adapted to limestone, which reacts chemically. As to pertains to the elaboration of the limestone mixes, we confirm that the standard gradings are pertinent until an eventual improvement of recomposition methods based on aggregate stacking theory is established.
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Jean Voirin. Utilisation des calcaires du Bajocien lorrain en techniques routières. Autre. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10093⟩. ⟨tel-01754343⟩

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