Semmaterials, L.p.

Other

E.d. Etnyre & Co.

James Barnat

Thomas R Brown

Patrick C O'Brien

Harold Dabbs

Tyrone Hannebaum

Jeremy Heller

A method of selecting a binder for a chipsealing process is provided. This method includes measuring the Adhesion Index of at least one binder and selecting a binder with a desirable Adhesion Index for the chipsealing process. The selected binder should have an Adhesion Index no greater than about 3.75 when calculated according to the most preferred method of the present invention. Preferably, the selected binder is applied to a surface and then aggregate is applied within the time parameters defined by the Adhesion Index of the binder to form a chipsealed surface. Preferably, substantially all of the aggregate bonds to the binder without the need for compacting the paved surface.

Method of selecting a binder for a chipsealing process based on its adhesion index

A method of selecting a bituminous emulsion with enhanced performance for paving is provided. This method includes selecting polymer modified bitumen with a penetration value of about 25 to 450 dmm at 25&#xb0; C. and selecting one or more emulsifiers comprised of at least about 5% by mass of a cationic nitrogenous compound selected from compounds having a carbonyl carbon atom bonded to a nitrogen atom, compounds having a carbon atom double bonded to a nitrogen atom, or combinations thereof based on the total mass of the selected emulsifier. Each selected emulsifier is reacted with a carboxylic acid to create one or more carboxylate salts. Each carboxylate salt created from a different proposed emulsifier separately is mixed with the bitumen to form one or more proposed bituminous emulsions. The coalescence of each proposed bituminous emulsion is measured using a rheology test, and a bituminous emulsion of the composition described above is chosen for paving a surface based on its coalescence properties.

Method of selecting a bituminous emulsion based on its coalescence

A roadway paving system for chipsealing a roadway surface comprising a novel roadway paving vehicle and a novel supply truck is provided. The roadway paving vehicle comprises an asphalt binder material dispensing system and an aggregate material dispensing system. The asphalt binder material dispensing system includes an asphalt tank and a sprayer that sprays a first layer of the asphalt binder material over the roadway surface. The aggregate material dispensing system comprises an aggregate hopper and conveyor mechanism that discharges a second layer of aggregate material over the roadway surface. No wheels run over a freshly laid surface. Supply trucks are linked to the roadway paving vehicle to refill the roadway paving vehicle on a continuous basis without the need of stopping the vehicle.

Roadway paving system and method including roadway paving vehicle and supply truck

Roadway paving supply truck

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Wichita, KS, United States of America

James Barnat