Integrated retroreflective marking materials

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 26/04 (2006.01) C04B 14/22 (2006.01) C04B 28/00 (2006.01) C04B 28/02 (2006.01) C04B 28/04 (2006.01) E01F 9/04 (2006.01)

Patent

CA 2330954

A dry formulation for an integrated marking material for concrete and asphalt application comprises a cementitious mixture including a hydraulic or cementitious binder, a redispersible polymeric cement modifier, a retroreflective agent filler, and optionally, a reflective agent filler. The formulation preferably includes a pigment, aggregate, a dispersant, a plasticizer, and/or a water reducer. The formulation optionally includes at least one admixture selected from an accelerator, an air entrainer, a defoamer, fibers, an inert filler, a natural clay, a pozzolanic filler, a retarder, a rheology modifier, a shrinkage compensating agent, a synthetic clay, a suspending agent, and a thickening agent. The marking material, when applied, has broadcast onto and embedded into its surface, additional retroreflective agents.

L'invention concerne une formulation à l'état sec pour matériau de marquage intégré utilisable dans les applications propres au béton et à l'asphalte, qui renferme un mélange à base de ciment, y compris un liant hydraulique ou à base de ciment, un modificateur de ciment polymère redispersible, une charge à agent rétroréfléchissant et, éventuellement, une charge à agent réfléchissant. De préférence, la formulation comprend un pigment, un agrégat, un dispersant, un plastifiant, et/ou un réducteur d'eau. Eventuellement, la formulation comprend au moins un additif choisi entre les produits suivants : substance accélératrice, entraîneur d'air, démousseur, fibres, charge inerte, argile naturel, charge pouzzolanique, retardateur, modificateur de rhéologie, agent expansif, argile synthétique, agent de mise en suspension, et agent épaississant. Une fois appliqué, le matériau de marquage comporte, diffusés à sa surface et intégrés à celle-ci, des agents rétroréfléchissants additionnels.

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