Abstract:
This invention relates to a process for treating cementitious containing materials including asphalt with a binding composition containing a protein-polysaccharide complex to improve resistance to erosion caused by environmental forces and physical wear and to enhance internal adhesion of the compositions. The use of the binding compositions in asphalt paving compositions reduces the amount of bitumen or asphalt emulsion necessary to produce asphalt paving compositions while increasing the wear resistance of the asphalt paving composition.
Abstract:
The process for hardening ballasts and other heaped structures calls for an adhesive, which is pourable at ambient temperatures, to first be transformed into the solid state by means of cooling. Then, the application of the liquid adhesive onto the heaped structure is time-dosed by the thawing of the cooled adhesive.
Abstract:
A pavement structure includes a skeleton concrete formed by evenly spreading a mixture containing as principal components not less than 30% by volume of coarse aggregate, 2% to 20% by volume of cement and 3% to 20% by volume of water, the skeleton concrete including voids which are filled with a fluid material containing a thermosetting resin as a principal component.
Abstract:
The invention relates to a substitute soil material for laying as a sports surface for example a horse-race track. The material may be a sand or other fine granular material with a binder comprising a polymeric material dispersed or dissolved in an oil which preferably is a soft grease at ordinary climatic temperatures. When laid, the surface may be maintained by periodic raking. Suitable polymeric materials are e.v.a. polystyrene, nylon or p.v.c.
Abstract:
Sulphur concretes and mortars are provided which display improved ductility and in which water-resistance is provided in otherwise water-disintegratable compositions due to the presence of swelling clay in the mineral aggregate. The improved properties are obtained by the use of petroleum additives such as crude oil and polyol additives such as glycerol.
Abstract:
This invention relates to a porous pavement for parking spaces, roadways, or streets, airfield runways and the like and it provides a porous pavement for such surfaces which allows water to pass through at a high absorption rate, thereby reducing water run-off and reducing flooding, and also allows pollutants to pass through the pavement to the sub-soil, reducing to a great extent the run-off of polluted water to lakes, rivers, bays and oceans. The invention comprises a paving admixture of aggregate, cement and a liquid adhesive mixture to ensure a firm pavement surface and at the same time providing voids or openings between the aggregates in the material to allow water to percolate therethrough.