Pavement repair method and system thereof
AssigneeiEmulsions Corporation
InventorsBrian Fennell, Martin Thompson, Christopher Holmes
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Abstract
A method for repairing/treating a pavement with the use of a rheology modifier is disclosed. The method comprises first applying a layer of a rheology modifier composition comprising a rejuvenating component onto the top surface of the pavement that needs repair, then applying a second layer of a binder onto the rheology modifier layer. The second layer of binder effectively seals the rheology modifier layer with the rejuvenating component for intimate contact with the top pavement surface, thus penetrating the surface layer to extend the life of the pavement surface, arresting the deterioration of visco-elastic properties and restoring some of those properties.
Claims19
A method for repairing or treating a pavement having a top surface, the method comprising:
- applying to the top surface a first layer of a rheology modifier comprising a rejuvenator;
- applying a second layer of a binder onto the first layer of a rheology modifying composition;
- wherein the first layer and the second layer are applied in succession;
- wherein the first layer and the second layer are applied employing an application system having:
- at least a first spray bar having a multiplicity of first nozzles to apply the rheology modifying composition onto the top surface, and
- at least a second spray bar having a multiplicity of second nozzles to apply the binder on top of and covering the first layer of a rheology modifying composition, thereby sealing the rheology modifying composition onto the top surface;
- wherein the rejuvenator is selected from the group of:
- naphthenic oils, plant oils and esters thereof, vegetable oils and esters thereof, a tall oil selected from crude tall oil (CTO) and tall oil pitch (TOP), an alkyl ester of one or more starting plant oil materials, an ester-functional rejuvenating agent derived from tall oil, having a cyclic content of at least 5 wt. %, and an acid portion comprising C8-C20 fatty acids with some degree of unsaturation, and mixtures thereof,
- wherein the binder comprises at least a component selected from the group of:
- asphaltenes, bitumen, natural asphalt, petroleum oil, paving grade oil residue, plastic residue from coal tar distillation, semi-blown asphalt, petroleum tar, pitch, solvent-deasphalting asphalt, polymers, and mixtures thereof;
- wherein the second layer of a binder is applied within one hour of the first layer of a rheology modifying composition;
- and
- wherein the top surface has a reduction in glass transition onset temperature of at least 5° C. after the application of the first layer of a rheology modifying composition.
Dependencies are inferred from the claim text.