Pavement compound

United Retek Corporation (URC) has developed asphalt emulsion stabilization technology for the ex situ treatment of soils contaminated with organic compounds and heavy metals. In this ambient temperature technology, the targeted contaminants are stabilized and solidified in an asphalt emulsion. According to the vendor, this emulsion can be used for pavement after the material has been cured. The technology has been used in full-scale site remediation projects and is commercially available. 

Elemental sulfur has been modified In an exothermic reaction with commercially available hydrocarbon compounds to produce a pavement binder material that has been successfully utilized to construct several experimental pavement sections on public highways. The engineering properties, the formulation, and the methodology for producing and utilizing this chemically modified sulfur pavement binder, intended as a substitute for asphalt cement, are discussed. 

Limestone (CaC03) is treated with hydrochloric acid and water to manufacture calcium chloride hexahydrate. This compound is used to melt ice and snow on pavements and roads. 

Test Method for Tack Free Time of Caulking Compounds and Sealants Specification for Nonbituminous Inserts for Contraction Joints in Portland Cement Concrete Airfield Pavements, Sawable Type Specification for Joint Sealant, Hot Poured, Elastomeric Type, for Portland Cement Concrete Pavements... 

MAJOR PRODUCT APPLICATIONS filtration, ceramics, foams, floor tiles, shoe soles, paints, food, building products, welding electrodes, gaskets, stucco, EIFS, asbestos alternative, sealants, roof coatings, athletic surface coatings, crack fillers and sealers, brake pads, clutches, pavement, artificial leather, electrical components, automotive components, household appliances, mastics, putties, patching compounds, grouts... 

In various asphalt processing methods, the rheological properties of the compounded asphalt are of primary importance. One invention shows how, by blending different fractions of crude oil, the processing properties can be optimized for pavement applications. In another recent invention,solvent-free polyurethane was compounded with asphalt. Such products have always contained substantial amounts of solvents to reduce viscosity to the level that allows the material to be cold applied with simple techniques. Using organoclay as compatibilizer for polyurethane and asphalt and a suitable plasticizer, elimination of solvent becomes possible. In addition to environmental safety, these products can be used safely on substrates which would otherwise be affected by solvents the formulation (e.g., polystyrene insulation boards). This is one example which shows that the benefits of solvent free systems go beyond the elimination of air pollutants. 

Epoxy resin composites are well suited for applications in moist environments they are used as epoxy resin mortar, cold curing anchoring compound in building construction, repairs to bridge pavement, and high-quality floor coverings in industrial facilities. 

---