trafficable waterproofing for concrete bridge decks. Flexible or rigid pavements are usually laid on bridges and viaducts; they need an underlying waterproofing, have a significant weight and are subject to several types of degradation because of limited durability. For this reason different solutions are now being investigated. A good alternative appears to be the application on bridge decks of surfacing made with resins and aggregate, in a mortar or alternatively a multi-layer form. Different mixes have been tested, made with a polymeric binder (epoxy resin) and natural or artificial/industrial aggregate (EAF slag, C&D aggregate, limestone, quartz sand). The mix is suitable for being applied in a single layer, with thickness of 2 to 4 cm over the cement concrete deck: it forms a lightweight pavement surfacing and, at the same time, durable waterproofing. Several trials have been performed in order to check the structural and functional properties of the mixes: pull-off for adhesion evaluation, wheel-track test for permanent deformation analysis, skid resistance and macro-texture measures, permeability evaluation. The results demonstrate that some of the investigated materials possess functional and mechanical characteristics that make them suitable for use on bridges.

Thin polymeric surface layers on concrete structures: an experimental study

PASETTO, MARCO;GIACOMELLO G.
2014

Abstract

trafficable waterproofing for concrete bridge decks. Flexible or rigid pavements are usually laid on bridges and viaducts; they need an underlying waterproofing, have a significant weight and are subject to several types of degradation because of limited durability. For this reason different solutions are now being investigated. A good alternative appears to be the application on bridge decks of surfacing made with resins and aggregate, in a mortar or alternatively a multi-layer form. Different mixes have been tested, made with a polymeric binder (epoxy resin) and natural or artificial/industrial aggregate (EAF slag, C&D aggregate, limestone, quartz sand). The mix is suitable for being applied in a single layer, with thickness of 2 to 4 cm over the cement concrete deck: it forms a lightweight pavement surfacing and, at the same time, durable waterproofing. Several trials have been performed in order to check the structural and functional properties of the mixes: pull-off for adhesion evaluation, wheel-track test for permanent deformation analysis, skid resistance and macro-texture measures, permeability evaluation. The results demonstrate that some of the investigated materials possess functional and mechanical characteristics that make them suitable for use on bridges.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/3157138
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