Surface covering material

Details Surface covering material Surface covering material

C - Chemistry, Metallurgy

04

B

C04B 28/28 (2006.01) C04B 24/26 (2006.01) C04B 28/06 (2006.01)

Patent

CA 2241167

A surface covering material is described which can be applied on to for example rock and coal surfaces (for convenience both rock and coal will further in this specification be referred to as "rock") in tunnels, stopes and pillars as well as around base plates of rock bolts to inhibit the breaking away of the rock covered thereby. The material comprises a mixture of a cementitious constituent, comprising a highly water absorbent cement blend, with a the second constituent which incorporates a water based polymer emulsion. The highly water absorbent cement blend can absorb at least its own mass of water and in some cases five times its own mass of water. The covering material will dry quickly in mines where there is high humidity and little air movement.

Matériau de revêtement de surface qui peut être appliqué, par exemple, sur des surfaces de roche et de charbon (pour simplifier, "roche" désignera ci-après la roche et le charbon) dans les tunnels, dans les chantiers d'abattage et sur les piliers, de même qu'autour des plaques d'assise des boulons d'ancrage pour inhiber le morcellement de la roche sous la plaque. Le matériau est composé d'un mélange de deux constituants: un liant hydraulique à base de ciment hautement hydrophile et un deuxième constituant qui incorpore une émulsion de polymère à base d'eau. Le mélange de ciment hautement hydrophile peut absorber au moins sa propre masse d'eau et, dans certains cas, jusqu'à cinq fois sa propre masse d'eau. Le matériau de revêtement sèche rapidement dans les mines où il y a une forte humidité et une faible circulation d'air.

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