Abstract: A combination of antioxidants and method of incorporating the antioxidants into an asphalt binder to make a modified asphalt binder are described. The antioxidants comprise a thioester and an aldehyde. The aldehyde and thioester, in a ratio between about 1:100 and about 100:1 parts by weight, are added to an asphalt binder. An acidic catalyst is also added in a concentration between about 0.1 wt % and about 18 wt % of the asphalt binder. The antioxidants, asphalt binder, and catalyst are mixed at a temperature between about 85° C. and about 135° C. for a time between about 30 minutes and about 6 hours. The antioxidants are capable of improving the performance grade of the asphalt binder. The modified asphalt binder possesses superior resistance to oxidative age hardening compared to other modified asphalt binder compositions that incorporate various antioxidants.

Abstract: New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, followed by accurately washing the solid obtained, drying it and calcining it. A composite is obtained containing limestone, titanium dioxide and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Abstract: New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Abstract: Provided are compositions comprising stamp sand granules embedded in asphalt, where the stamp sand granules comprise a silane coating. Additionally provided are methods of making a silane-coated stamp sand, the methods comprising combining stamp sand granules and a silane solution to form a mixture and drying the mixture. Additionally provided are methods of covering a surface, the methods comprising combining silane-coated particles and asphalt to provide a mixture and distributing the mixture on the surface.

Abstract: Embodiments are presented herein that provide a filler that is a combination of zeolite and hydrated lime. Addition of this filler to asphalt is more beneficial than addition of either zeolite or hydrated lime alone. The beneficial properties of zeolite include a controlled release of moisture that aids mixture workability and the ability of the asphalt to effectively coat the aggregate particles. The mixture of zeolite and hydrated lime is easier to handle and integrate into a process than use of either compound alone, and it offers a number of other benefits.

Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.

Abstract: Self-compressing asphalt mixtures, in particular according to the mastic asphalt principle, and in particular mastic asphalt mixtures for roadway topcoats, asphalt intermediate layers, asphalt binder layers and/or asphalt sealing layers used in road construction. Roadway topcoats, asphalt intermediate layers, asphalt binder layers, and/or asphalt sealing layers containing such asphalt mixtures, methods for forming the same, and methods for transporting the asphalt mixtures, such as to an installation site, are also disclosed.

Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.

Abstract: Asphalt binder modifiers derived from the thermo-catalytic conversion of biomass are provided. The asphalt binder modifiers are useful as anti-stripping agents and in increasing tensile strength ratios for asphalt concrete, asphalt-containing roofing materials, and other asphalt applications.

Abstract: A method of forming a roofing-grade asphalt mixture can include mixing a bio-asphalt including a partially oxidized bio-source material, a bitumen source material different from the bio-asphalt, and particles to form the roofing-grade asphalt mixture. In an embodiment, the bitumen source material can have a softening point of at least approximately 102° C. and a penetration distance no greater than approximately 20 dmm. In another embodiment, the roofing-grade asphalt mixture can have a softening point of at least approximately 104° C., a penetration distance no greater than approximately 12 dmm, a viscosity of at least approximately 3000 cps at a temperature of 177° C., or any combination thereof. The roofing-grade asphalt mixture can be applied to a base material to form a roofing product.

Abstract: Storage stable asphalt paving pellets that contain recycled asphalt shingle material and, optionally, RAP fines, ground tire rubber, and the like. Methods for making and utilizing the storage stable asphalt paving pellets are also disclosed. A typical pellet includes a core and an outer shell. The core may include recycled asphalt shingle material and an asphalt binder material (e.g., bitumen). The outer shell, which may include a number of different materials such as, but not limited to, mineral fines, ground plastic fines, clays, and the like, is configured to prevent the asphalt pellets from sticking to each other or to adjacent surfaces during storage. The storage stable asphalt paving pellets can be manufactured at a central facility and then stored at a job site, a warehouse, or the like until they are needed for the preparation of asphalt paving material.

Abstract: The present invention relates to a bituminous mastic, in other words a mixture comprising on the one hand at least one bitumen-based hydrocarbon binder, More particularly a blown bitumen, and on the other hand fines, including an ultrafines fraction. The invention also relates to poured asphalts and bituminous coatings comprising a bituminous mastic. A method of producing such bituminuous materials is described, as are the road-building and industrial applications of these materials.

Abstract: Improved asphalt pavement mixes containing calcium phosphate and processes for producing the improved pavement mixes are provided. The asphalt pavement compositions comprise aggregate, asphalt binder and calcium phosphate. The improved pavement mixes may be produced by blending calcium phosphate with the aggregate prior to combining the aggregate with the asphalt binder. Alternatively, the calcium phosphate may be mixed with the asphalt binder prior to adding the aggregate to the asphalt binder. The addition of calcium phosphate to the asphalt pavement mixtures can improve the stiffness or the moisture resistance of the asphalt pavement mix.

Abstract: The present invention relates to a sound deadener melt pad composition, wherein the composition includes an asphalt, EVA H2020, a oil palm fiber, a hydraulic lime and an oil palm olein.

Abstract: A composition comprised of asphalt and filler, wherein said filler is comprised of particles that comprise an inorganic core and a coating disposed on said core, and wherein at least about 60 weight percent of said particles are smaller than about 212 microns.

Abstract: Compositions of discrete substances that are capable of being mixed together to form a composite material and methods for making the compositions are disclosed. The composition includes a plurality of pellets of a tacky, deformable material at an ambient temperature dispersed within a flowable fine material. The fine material occupies the interstices between the plurality of pellets in a manner that minimizes pellet to pellet contact.

Abstract: A mineral composition comprised of at least about 90 weight percent of roofing granules, at least about 50 weight percent of calcium carbonate with a hardgrove grindability index of less than about 70, from about 0.1 to about 1.0 weight percent of a pigmented material, from about 0.1 to about 1.0 weight percent of a composition for inhibiting the growth of an organism selected from the group consisting of algae, bacteria, and mixtures thereof, and less than about 100 parts per million of a metal selected from the group consisting from the group consisting of arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver, and less than about 100 parts per million of a polycyclic aromatic hydrocarbon. The mineral composition, when tested in accordance with by ASTM Standard Test D 4977-03, loses less than 5 grams of material.

Abstract: Lime pellets can be used in preparing asphalt compositions. The pellets are characterized as having a substantially rigid structure with a dimension greater than about 1.5 mm and being compatible with a hot mix asphalt so as to dissolve in liquid asphalt. The pellets condition an end product of asphalt pavement by being dissolved into a hot mix asphalt composition during the manufacture of such an asphalt. The method of conditioning includes providing the lime pellets, and mixing the lime pellets with a hot mix asphalt ingredient, wherein the ingredient is at least one of an aggregate or asphalt cement. The asphalt and lime pellets are heated to a temperature sufficient for the lime pellets to be dissolved.

Abstract: The present invention is directed to a stripping-resistant asphalt paving composition that contains asphalt, aggregate, polyphosphoric acid, and an alkaline anti-stripping additive.

Abstract: A stone matrix asphalt for use as a paving composition, containing lime kiln dust as a mineral filler. The lime kiln dust results from production of lime from limestone in a kiln and contains available calcium oxide in an amount of less than forty percent by weight.

Abstract: An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.

Abstract: A road repairing material of the invention has a very excellent adhesive property and adherent property to an existing paved road surface and aggregate, and even if several years has passed since the repair, displacement, peeling, cracking and the like do not occur in the repaired spot. Besides, even if the material is exposed to air after opening of a bag, it does not change its quality and is not hardened for a long period of 3 to 5 years, and accordingly, the quantity of the material used can be selected taking a repair spot into consideration, and the remainder material can be sufficiently used for next repair work and is not required to be discarded as waste material, and therefore, the very economical road repairing material can be provided.

Abstract: Fully oxidized cutback asphalts suitable for application in roofing, waterproofing, and sealing applications in all weather conditions, including as mastics and other sealants. Compositions according to the invention comprise unprecedented proportions of solids and asphalts yet remain workable to temperatures as low as 20° F. or below. In addition to fully-oxidized roofing-grade asphalts, preferred compositions according to the invention also comprise hydrophobic agents selected from the group comprising fatty acids and amine compounds and may be applied in rain or other wet conditions, and include polybutene or fatty acid peptizers to control the glass transition temperature of the completed mastic and thereby permit application of the composition at extremely low temperatures. Preferred embodiments optionally also comprise fillers such as cellulose fibers, diatomaceous earth, limestone, and asbestos for various advantageous purposes.

Abstract: An improved process for making asphalt involves incorporating tar sands into a hot asphalt mix process and modifying the process. The improved process involves using a heated asphalt counter-flow drum mixer to admix asphaltic cement, coarse aggregate, and fine aggregate. During this mixing process, the admixture is heated to produce the asphaltic concrete. In the improved process from about 20 to about 80 percent tar sand is mixed with from about 80 to about 20 percent aggregate and from about 1 to less than about 5 percent liquid asphalt cement in a drum mixer to form an admixture, heating the admixture to a first elevated temperature (e.g., 250° and 400° F.) for a set period of time (e.g., 40 to about 90 seconds); and discharging the heated admixture at a second elevated temperature (e.g., from about 150° to about 350° F.) to produce asphaltic concrete. Preferably, the aggregate has a gradation of 10 to 25 percent passing a #4 sieve, and the admixture has substantially no added fines.