C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/02 (2006.01) E01C 1/00 (2006.01) E01C 11/22 (2006.01)
Patent
CA 2721824
A new photocatalytic composition is described that is designed tor percolation m road surfaces. The composition contains no aggregates, but consists of cement, a photocatalyst, a superfluidifier, a viscosity modifier and an antifoaming agent, in suitable proportions. The composition is applied to porous open-graded asphalt courses, completely filling the cavities down to a thickness coming between 30 and 50 mm. The treated asphalt acquires a strong, durable photocatalytic activity, even when it is submitted to heavy mechanical loads and adverse weather conditions, as in the case of road surfaces in and out of town, liable to intense traffic.
La présente invention concerne une nouvelle composition photocatalytique qui est conçue pour la percolation dans des surfaces de route. La composition ne contient aucun agrégat, mais est constituée de ciment, dun photocatalyseur, dun superfluidifiant, dun modificateur de viscosité et dun agent anti-mousse, dans des proportions appropriées. La composition est appliquée sur des étendues poreuses dasphalte ouvert, remplissant complètement les cavités jusquà une épaisseur comprise entre 30 et 50 mm. Lasphalte traité acquiert une activité photocatalytique forte et durable, même lorsquil est soumis à des charges mécaniques lourdes et à des conditions météorologiques défavorables, comme dans le cas de surfaces de route dentrée et de sortie de ville supportant une circulation intense.
Grelaud Jean-Pierre
Guerrini Gian Luca
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Italcementi S.p.a.
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