The High-Performance Cementitious Material (HPCM), a Cousin of UHPFRC for Long-Life Pavement
Résumé
Under the framework of OECD/CEMT JTRC, an international team of road research laboratories worked together in order to evaluate technical solutions for long-life pavement. As a matter of fact, there are in many countries highly trafficked road sections where any traffic disruption brings high external costs. For such a case, the aim was to study wearing courses that could last several decades with no maintenance. The paper presents an innovative technical solution, called HPCM (High-Performance Cementitious Material), consisting of a thin layer of ultra-high performance fibre-reinforced mortar with calcined bauxite aggregate embedded in the surface at the fresh state. Many laboratory and two full-scale tests were carried out, dealing with surface resistance (abrasion, wear, shocks, freeze-and-thaw, acid attacks), cracking under restrained shrinkage and fatigue resistance due to heavy traffic loading. New projects were launched recently to continue this coordinated research : a French national project called CLEAN, and an international project called LLPS3. Both of them aim at building circulated road sections to fully validate this promising technology.
Origine : Fichiers produits par l'(les) auteur(s)
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