Cover for asphalt including asphalt emulsion and method of paving asphalt using the same
AssigneesEsg Industry Co., Ltd., Esg Construction. Co. Ltd., A-One Yoo Hwa
InventorsHyeong Su Kim, Hyong Ho Nam, Sung Hoon Shim, Hyoung Dong Ko
Life of this patent
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Abstract
Provided is a cover for asphalt including an asphalt emulsion and a method of paving asphalt using the same, and specifically, to a cover for asphalt, which may facilitate adhesion between an existing asphalt pavement layer and a new asphalt pavement layer and substitute for a tack coat. The cover for asphalt prevents an asphalt emulsion from being damaged by heavy vehicles or construction equipment moving for application of a new pavement layer, and allows omitting separate asphalt emulsion application and curing processes before application of the new asphalt layer.
Claims4
A cover for asphalt to be disposed between an upper surface of an existing asphalt layer and a new asphalt layer,
- the cover for asphalt comprising:
- a film layer having a basis weight of 10 to 50 g/m2 and a melting point of 90 to 130° C.;
- and
- a nonwoven fabric layer impregnated with an asphalt emulsion in an amount of 50 to 650 g/m2 and attached to one surface of the film layer, the nonwoven fabric layer having a melting point of 50 to 130° C.,
- wherein the asphalt emulsion contains, based on a total weight of the asphalt emulsion, 60 to 70 wt % of a modified asphalt, 1.0 to 5.0 wt % of a curing agent, 0.01 to 0.1 wt % of an anti-stripping agent, 1.0 to 5.0 wt % of a petroleum resin, 5.0 to 10.0 wt % of a latex, 0.1 to 2.0 wt % of a fatty acid amine salt, 0.1 to 2.0 wt % of a calcium chloride, 0.1 to 1.0 wt % of a hydrochloric acid, 1.0 to 10.0 wt % of a thickener, and 20 to 30 wt % of water, and
- wherein the nonwoven fabric layer is formed of a copolyamide TBCW nonwoven fabric or a copolyamide melt-blown nonwoven fabric.
Dependencies are inferred from the claim text.