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US 4,113,401 AGranted
Method of pavement repair
OwnerCharles H. McDonaldinventor
Life of this patent
Estimating the term…
Abstract
A method of repairing pavements employing an elastomeric pavement repair composition comprised of paving grade asphalt and rubber. The asphalt is heated to an elevated temperature and the rubber is combined therewith. The resulting composition is mixed to form a hot jellied composition which is applied to cracked or distressed pavements to repair the same. The resulting composition can also be formed into a ready made elastomeric cold patch which is applied to cracked pavement surfaces after tacking of the surface.
Claims31
The method of repairing pavement subject to cracking which comprises the steps of:
- preparing a hot elastomeric pavement repair material consisting essentially of paving grade asphalt and hydrocarbon rubber by mixing the paving grade asphalt and the hydrocarbon rubber in a ratio of about one to about three parts asphalt to about one part rubber at a temperature within the range of about 300 and about 500.degree. F. to form a jellied composition, the mesh size of the rubber being from about -16 to +200;
- treating the surface of the pavement area to be repaired with adhesive means to make the surface tacky and adhesive;
- applying a layer of the hot elastomeric material over the pavement to be repaired at a rate of about 0.3 to about 1 gallon of hot elastomeric material per square yard of repaired pavement area;
- applying a dressing of aggregate cover having a nomimal size of about one-fourth to about three-eighths inches over the top surface of the hot elastomeric material layer;
- and
- working the aggregate into the hot elastomeric material, the aggregate being applied at a rate of about 25 to about 40 pounds of aggregate per square yard of the hot elastomeric material layer.
3 more elements
A method of making a road which comprises the steps of:
- grading an area wherein a road is to be located to form a subgrade of the road;
- compacting the top portion of the subgrade to form a base layer;
- preparing a hot elastomeric pavement material by mixing paving grade asphalt and hydrocarbon rubber in the ratio of about one to about three parts asphalt to about one part rubber at a temperature from about 350.degree. F. to about 500.degree. F. to form a hot jellied composition;
- and
- applying the hot elastomeric material over the base layer at a rate of about 1/4 to about 2.5 gallons of hot elastomeric material per square yard of base layer.
2 more elements
A method of making a road which comprises the steps of:
- (a) grading an area wherein a road is to be located to form a subgrade of the road;
- (b) compacting the subgrade with gravel, sand or aggregate to form a base layer;
- (c) excavating a drainage ditch along one side of the subgrade;
- (d) preparing a hot elastomeric repair material by mixing paving grade asphalt and hydrocarbon rubber in the ratio of about one to about three parts asphalt to about one part rubber at a temperature of from about 350.degree. F. to about 500.degree. F. to form a hot jellied composition;
- (e) applying the hot elastomeric material over the base layer and the drainage ditch at a rate of about 1/4 to about 2.5 gallons of hot elastomeric material per square yard of base layer and drainage ditch;
- (f) applying an aggregate dressing to the surface of the hot elastomeric material before the material sets up at the rate of about 20 pounds to about 50 pounds of aggregate per square yard of applied hot material;
- and
- (g) working the aggregate in the hot material.
5 more elements
The method of treating pavement subject to cracking which comprises the steps of:
- preparing a hot elastomeric pavement repair material by mixing paving grade asphalt and hydrocarbon rubber in a ratio of about one to abut three parts asphalt to about one part rubber at a temperature within the range of about 300 and about 500.degree. F. to form a jellied composition, the mesh size of the rubber being from about -16 to +200;
- treating the surface of the pavement area to be repaired with adhesive means to make the surface tacky and adhesive;
- applying a layer of the hot elastomeric material over the pavement to be repaired to form a stress absorbing interlayer membrane having a thickness of about 0.1 to about 0.5 inch;
- and applying a pavement layer of pavement surfacing materials selected from the group consisting of asphalt-concrete, macadam and concrete over the interlayer membrane.
1 more element
A method of treating pavement subject to cracking which comprises the steps of:
- preparing a hot elastomeric pavement repair material by mixing paving grade asphalt and hydrocarbon rubber in a ratio of about one to about three parts asphalt to about one part rubber at a temperature within the range of about 300.degree. and about 500.degree. F. to form a jellied composition, the mesh size of the rubber being from about -16 to +200;
- applying a layer of the hot elastomeric material over the pavement to be repaired to form a stress absorbing interlayer membrane having a thickness of about 0.1 to about 0.5 inch;
- and applying a pavement layer of pavement surfacing materials selected from the group comsisting of asphalt-concrete, macadam and concrete over the interlayer membrane.
A method of repairing pavements which includes the steps of:
- treating the area of the pavement surface to be repaired with adhesive means to make the area adhesive and tacky;
- and
- securing an elastomeric cold patch on the treated area, said elastomeric cold patch comprising a layer of aggregate and an elastomeric pavement repair material and a thin flexible sheet attached to one side of the layer, the elastomeric material consisting essentially of 10 through 300 penetration grade asphalt and hydrocarbon rubber which have been mixed together in the ratio of from about one to about three parts asphalt to about one part rubber by weight at a temperature from about 300 to about 500.degree. F. to form a hot jellied composition, the cold patch being applied to the treated pavement with the thin flexible sheet side up.
The method of repairing pavements which includes the steps of:
- treating the area of the pavement surface to be repaired with adhesive means to make the area adhesive and tacky;
- and
- securing an elastomeric cold patch on the treated area, said elastomeric cold patch comprising a layer of aggregate and an elastomeric pavement repair material and a thin flexible sheet attached to one side of the layer, the elastomeric material consisting essentially of 10 through 300 penetration grade asphalt and hydrocarbon rubber which have been mixed together in the ratio of from about one to about three parts asphalt to about one part rubber by weight at a temperature from about 300 to about 500.degree. F. to form a hot jellied composition, the cold patch being applied to the treated pavement with the thin flexible sheet side down.
Dependencies are inferred from the claim text.