Abstract: The invention is directed to a novel bitumen composition comprising a paraffin wax, wherein the wax has a congealing point of between 85 and 120° C. and a PEN at 43° C., expressed in 0.1 mm, as determined by IP 376 of more than 5.
Type:
Grant
Filed:
November 9, 2006
Date of Patent:
August 23, 2011
Assignee:
Shell Oil Company
Inventors:
David Bobee, Alain Marcel Bernard Seive, Anne Claire Rebuffatti
Abstract: A micronized filler for use in thermoplastic compositions, polymeric emulsions and other end products can include micronized recycled asphalt paving. The recycled asphalt paving filler can include calcium carbonate, calcium magnesium carbonate and silicon dioxide. The filler can have a particle size of 325 mesh screen, and a specific gravity of 2.4. The filler increases the post consumer content of various end products.
Type:
Application
Filed:
February 11, 2011
Publication date:
August 18, 2011
Inventors:
Howard Grant Bradshaw, Jim Frederick Fisher, Johnny Hinton Waters
Abstract: Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications.
Type:
Grant
Filed:
September 22, 2010
Date of Patent:
August 16, 2011
Assignee:
Fina Technology, Inc.
Inventors:
Paul J. Buras, William D. Lee, James R. Butler
Abstract: Methods of preparing a cross-linked, polymer-modified asphalt is provided. The method involves adding a crosslinking agent to asphalt prior to the addition of a crosslinkable polymer and an acid. Asphalt prepared by the disclosed methods exhibit improved properties such as properties measured by the Multiple Stress Creep Recovery (MSCR) test.
Type:
Application
Filed:
February 11, 2010
Publication date:
August 11, 2011
Applicant:
ICL Performance Products LP
Inventors:
Darrell C. Fee, René Maldonado, Enrique E. Romagosa
Abstract: A sealant composition comprising a binder and a filler material. The binder comprising a residual pitch product and an elastomeric material and, optionally, asphalt, a microcrystalline wax, and/or oil. The filler material is present in an amount of between about 11 vol. % and about 67 vol. % of the sealant composition. In one embodiment, the filler material is present in an amount of between about 25 wt. % and about 70 wt. % of the sealant composition.
Abstract: Methods are provided for preparing a bitumen product having improved properties for use in asphalt road paving. In a preferred embodiment, polyphosphoric acid is added to heated bitumen and stirred for a period of time. After addition of the polyphosphoric acid, one or more sulfur-crosslinkable elastomers and one or more sulfur donor coupling agents is added to the heated bitumen and mixed. The polyphosphoric acid, sulfur-crosslinkable elastomers and sulfur donor coupling agents may also be added to separate quantities of bitumen, and the bitumens may be combined prior to use to obtain a final bitumen product having the desired characteristics.
Abstract: The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.
Type:
Grant
Filed:
October 1, 2010
Date of Patent:
July 19, 2011
Assignee:
A.L.M. Holding Company
Inventors:
Gerald H. Reinke, Gaylon L. Baumgardner, Steven L. Engber
Abstract: This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.
Type:
Grant
Filed:
October 15, 2010
Date of Patent:
July 5, 2011
Assignee:
MeadWestvaco Corporation
Inventors:
Everett Crews, Tom Girardeau, Iain Jack
Abstract: Provided is a method of mixing a modified bitumen composition and feeding one or more polymeric materials to an extruder, together with asphalt fed at more than one location along a length of the extruder. Improved mixing and elimination of asphalt melting in the production of rolled goods and other products is improved.
Type:
Grant
Filed:
December 5, 2007
Date of Patent:
June 28, 2011
Assignee:
Johns Manville
Inventors:
Raymond C. Swann, Klaus Friedrich Gleich, Walter Alexander Johnson, Michael John Block, John VanNice
Abstract: The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.
Type:
Grant
Filed:
October 1, 2010
Date of Patent:
June 28, 2011
Assignee:
A.L.M. Holding Company
Inventors:
Gerald H. Reinke, Gaylon L. Baumgardner, Steven L. Engber
Abstract: Compositions including a bituminous material, and a solvent including at least one ester formed as the reaction product of a C1-C4 alcohol with a C4-C6 mono-carboxylic acid, and construction materials including the bituminous compositions. Methods of using the bituminous compositions in forming construction materials are also disclosed. The construction materials may be advantageously used as a roofing shingle, a roofing membrane, a roof coating, a paving material, a sealant, or a combination thereof. In certain exemplary embodiments, the composition forms a solar reflective surface.
Abstract: The disclosure relates to a bituminous composition comprising at least one bitumen and at least one organogelling molecule taken alone or as a mixture, said organogelling molecule being represented by the following general formula (I): where: A represents an acyclic, cyclic or polycyclic, saturated or unsaturated, linear or branched hydrocarbon-based group having 3 to 92 carbon atoms, resulting from the polymerization of the side chains of at least one unsaturated fatty acid, X represents an NH group or an oxygen atom O, R1 represents a group chosen from: a linear or branched hydrocarbon-based group having 2 to 40 carbon atoms, optionally comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsubstituted aromatic group, R2 represents a group chosen from: a hydrogen atom, a linear or branched hydrocarbon-based group having 1 to 40 carbon atoms, comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsub
Type:
Application
Filed:
November 25, 2008
Publication date:
June 16, 2011
Applicants:
Total Raffinage Marketing, Universite Pierre Et Marie Curie
Inventors:
Pierre Chaverot, Sylvia Dreessen, Laurent Bouteiller, Emmanuelle Bugnet
Abstract: The invention relates to copolymers based on unsaturated mono or dicarboxylic acid derivatives, oxyalkyleneglycol-alkenyl ethers, vinyl polyalkyleneglycol or ester compounds, in addition to the use thereof as additives for aqueous suspensions based on mineral or bituminous binding agents. Said invention is characterized in that the inventive copolymers, having a long lateral chain, impart small amounts of excellent processing properties to aqueous binding suspension, and simultaneously cause the water content in the concrete to be greatly reduced.
Type:
Application
Filed:
February 11, 2011
Publication date:
June 9, 2011
Inventors:
Moraru BOGDAN, Hübsch Christian, Albrecht Gerhard, Scheul Stefanie, Jetzlsperger Eva
Abstract: Suggested is the use of amides and/or polyamides obtainable by condensation of (a) mono- and/or dicarboxylic acids and (b) amines and/or polyamines as auxiliary agents for aqueous asphalt and bitumen compositions.
Type:
Application
Filed:
February 11, 2009
Publication date:
May 19, 2011
Inventors:
Joaquin Bigorra Llosas, Ramon Valls, Stéphanie Merlet, Jean-Pierre Molitor
Abstract: A modified asphalt binder composition prepared by combining asphalt binder, phosphorus pentasulfide, and less than 2.5 parts by weight unsaturated polymer, per 100 parts by weight asphalt binder, to thereby produce a modified asphalt binder composition characterized by an elongation recovery at 25° C., as determined according to AASHTO T301, of greater than 75%.
Type:
Application
Filed:
September 14, 2010
Publication date:
May 5, 2011
Inventors:
William L. Hergenrother, Peter W. Boerner, Christine Rademacher, Daniel F. Graves, Timothy P. Reece, Herbert L. Wissel
Abstract: The invention relates to a method of preparing crosslinked bitumen/polymer compositions having reduced emissions of hydrogen sulphide, in which, while operating at temperatures between 100° C. and 230° C. and with stirring, for a duration of at least ten minutes, at least one bitumen or mixture of bitumens is brought into contact with at least one polymer and at least one crosslinking agent, said crosslinking agent being represented by the general formula HS—R—SH where R represents a saturated or unsaturated, linear or branched, cyclic and/or aromatic hydrocarbon-based group having 2 to 40 carbon atoms, optionally comprising one or more heteroatoms, and that does not comprise a C?O carbonyl function and/or a O—C?O carboxylate function.
Type:
Application
Filed:
April 6, 2009
Publication date:
April 28, 2011
Applicant:
TOTAL RAFFINAGE MARKETING
Inventors:
Romuald Botel, Sylvia Dreessen, Pierre Chaverot, Charlotte Godivier
Abstract: There are provided a polyol curable fluororubber composition using a fluororubber of general use, a cured fluororubber formed article used as a grommet, a seal packing and the like for a gas sensor which can be used under high temperature circumstances using this, and a method of producing the same. A polyol curable fluororubber composition, which comprises 100 parts by weight of a fluororubber, 6 to 15 parts by weight of magnesium oxide, 0.5 to 5 parts by weight of a hydrotalcite group compound and 20 to 55 parts by weight of a mixture of thermal black and a bituminous coal filler. A cured fluororubber formed article which is produced by forming and curing the fluororubber composition in the presence of a polyol curing agent, and then subjecting the cured formed product to a stepwise temperature elevation treatment in a temperature range of 100° C. to 300° C.
Abstract: A rosin oil-modified bitumen compound having a significantly reduced viscosity compared to the conventional bitumen at same temperature, yet providing the bituminous composition of comparable indirect tensile strength and performance is disclosed. The bituminous composition made of the disclosed modified bitumen allows the production and application at lower temperatures than the conventional bituminous composition, and thereby a reduction in energy consumption and a lower emission level of organic volatiles and fumes.
Abstract: An emulsion composition to coat a substrate that includes a barrier-forming material, water; an organometallic compound, and at least one thickener is described. The composition may further include a material such as talc. Articles, including ductile pipes, coated with this material are also described. A method of increasing the drying rate of a composition applied to a substrate to form a coating that includes application of the emulsion composition and drying the composition to form a coating layer. Also include are methods of forming a coating that exhibits a reduced incidence of blocking or pull-off, comprising applying the emulsion composition to a substrate and drying, whereby the coating layer formed exhibits a reduced incidence of blocking or pull off relative to conventional asphalt emulsion coatings.
Abstract: A method of producing sulfur modified organosilane compounds that can be used in asphalt binders which method involves: combining together an organosilane or mixtures of organosilanes, a sulfide, a halogen acceptor and solvent to form a reaction mixture; and allowing the organosilane to react with the sulfide in the presence of a halogen acceptor to produce a sulfur modified organosilane compound. The sulfur modified organosilane compound can be introduced into a polymer modified or unmodified asphalt binder in which the sulfur modified organosilane compound reacts with components in the asphalt mixture to form a modified asphalt. The organosilanes used to produce the sulfur modified organosilanes can be from a source of waste products (such as Direct Product Residue) in which case the waste products can be reused in asphalt binders.
Abstract: A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one bituminous binder to examine, where the bituminous binder comprises bitumen and one or more polymers, where the one or more polymers include a sufficient amount of conjugated diene such that at least 2.5% of the bituminous binder's weight comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the bituminous binder and an aggregate; testing each bituminous binder for binder fracture energy properties; and selecting a bituminous binder for use in the crack resistant layer.
Type:
Grant
Filed:
June 1, 2010
Date of Patent:
February 15, 2011
Assignee:
Road Science, LLC
Inventors:
James J. Barnat, Phillip Blankenship, Richard Steger, Todd Lynn, Jason Bausano, Jehna Dent, Tim McKinney
Abstract: The present invention relates to a bituminous composition comprising at least one bitumen and at least one polycondensate capable of forming a supramolecular assembly comprising one or more associative group(s). The present invention also relates to the use of such bituminous composition for the preparation of asphalt mixtures useful for the coating of rolling surfaces, for the preparation of water-proofing coatings, and the for the preparation of adhesive formulations.
Type:
Application
Filed:
August 3, 2010
Publication date:
February 10, 2011
Applicant:
CECA S.A.
Inventors:
Juan Antonio Gonzalez Leon, Jean-Philippe Gillet, Gilles Barreto, Manuel Hidalgo, Vincent Luca
Abstract: The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.
Type:
Application
Filed:
October 1, 2010
Publication date:
January 27, 2011
Applicant:
A.L.M. HOLDING COMPANY
Inventors:
Gerald H. Reinke, Gaylon L. Baumgardner, Steven L. Engber
Abstract: Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications.
Type:
Application
Filed:
September 22, 2010
Publication date:
January 20, 2011
Applicant:
Fina Technology, Inc.
Inventors:
Paul J. Buras, William D. Lee, James R. Butler
Abstract: This invention relates to the modification of bitumen by polymeric materials used particularly for the preparation of asphalt mixtures with enhanced mechanical properties, wherein the polymeric materials are selected from additives capable of forming a supramolecular assembly. The modified bitumen may be used for the fabrication of asphalts mixtures with mineral aggregates used in construction or maintenance of sidewalks, roads, highways, parking lots or airport runaways and service roads and any other rolling surfaces.
Type:
Application
Filed:
February 20, 2009
Publication date:
January 13, 2011
Inventors:
Juan Antonio Gonzalez Leon, Gilles Barreto, Lionel Grampre
Abstract: The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.
Type:
Application
Filed:
September 22, 2010
Publication date:
January 13, 2011
Inventors:
Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis
Abstract: The present invention relates to bitumen additive mixtures, their use and application for the fabrication of asphalt mixtures used in pavement and waterproofing, and more specifically for construction, repair and maintenance of sidewalks, roads, highways, parking lots or airport runaways and service roads and any other rolling surfaces.
Type:
Application
Filed:
July 6, 2010
Publication date:
January 13, 2011
Applicant:
CECA S.A.
Inventors:
Juan Antonio Gonzalez Leon, Gilles Barreto, Vincent Luca, Eric Jorda
Abstract: Disclosed is a paving resin composition which comprises a thermoplastic resin in small lumps, containing 30 to 70% by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20 to 45% by weight and a melting temperature of 40 to 100° C. The paving resin composition of the present invention is melted within a short time, excellent in wettability and adhesion property to aggregates, and capable of providing a paved face excellent in durability free from problems of deformation during summer and cracking during winter. Moreover, the paving resin composition of the present invention can be thrown directly to a mixer without being passed through a measurement apparatus and accordingly, washing work of the measurement apparatus or pipes is made unnecessary and the workability is thus significantly increased.
Abstract: An asphalt enhancing additive, an asphalt cement and an asphalt mixture containing the additive, wherein the additive causes the mixture to be more easily workable so that the asphalt mixture can be manufactured at a temperature lower than the conventional ones, wherein the additive comprises the mixture of an aminic compound, a lubricant and a flux.
Type:
Application
Filed:
September 5, 2007
Publication date:
December 30, 2010
Applicant:
ASPHALTABLE S.A.
Inventors:
Alejandro MacOme, Vulijscher Felix Osvaldo, Fabian Alberto Taraborelli
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.
Type:
Grant
Filed:
November 21, 2008
Date of Patent:
December 28, 2010
Assignee:
Malaysian Palm Oil Board (MPOB)
Inventors:
Ridzuan bin Ramli, Mohd Basri bin Wahid, Nasrin bin Abu Bakar, Robaya bt Mohamed Halim, Ravindranathan a/l N. Narayana Menon, Astimar bt Abd Aziz
Abstract: A process for preparing a modified asphalt binder composition, the process comprising mixing asphalt, an unsaturated polymer, and an organothionating agent to form a modified asphalt composition.
Type:
Application
Filed:
June 19, 2008
Publication date:
December 23, 2010
Inventors:
Christine Rademacher, Daniel Graves, Herb Wissel, Timothy Reece
Abstract: Disclosed are waterproofing membranes consisting of a backing impregnated with a bituminous formulation comprising industrial bitumen, a mineral filler, a thermoplastic polymer or a mixture of thermoplastic polymers, characterised in that the mineral filler consists of hollow glass microspheres with a density of between 0.10 and 0.14 g/cm3 and a size of less than 120 ?m.
Abstract: A two-component composition is disclosed and a method of applying the composition to a surface to form thereon a hardened compact coating, wherein each component remains separate until conveyed to a mixer for forming therein, a mixture of the two components, allowing seamless production of a liquid foil on the surface, and that hardens reactively to form a hardened compact coating, which comprises: (i) a first component which comprises: a 60-70% mixture of bitumen and water in a quantity of 50 to 100 partial mass %; and (ii) a second component which comprises: 20 to 50 partial mass % filling material, and 40 to 80 partial mass % softening, non-volatile oil, and wherein the first component and the second component are present in a ratio of 100:10 up to 50 mass %.
Abstract: The embodiments herein relate to a method of synthesizing new improved reactive terpolymer, S-MMA-X (styrene/modified maleic anhydride/X) wherein X is any type of polymers. The method involves synthesizing styrene-modified maleic anhydride complex (SMMA) with the ability to react with all kinds of polymers to produce new reactive terpolymer with formation of nano particles inside them. The nanoparticle formations improve the physio-chemical, thermal and mechanical properties of the newly formed reactive terpolymer when compared to natural rubber, their derivatives, EPDM or other known polymer etc. Depending on the property of the end product polymers produced by the invention, the end use can be varied. In one embodiment, the polymer X is natural rubber (NR) and the end product terpolymer is used as bitumen modifier. In another embodiment, the polymer X is ethylene-propylene diene monomer (EPDM) and the end product terpolymer behaves like a smart particle and absorbs oil and water contaminants.
Abstract: Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications.
Type:
Grant
Filed:
February 6, 2008
Date of Patent:
November 2, 2010
Assignee:
Fina Technology, Inc.
Inventors:
Paul J. Buras, William Lee, James R. Butler
Abstract: A process for preparing bitumen bale for clean, safe, eco-friendly and cost-effective packing, storing and transporting of viscous bitumen products and the products thereof is delineated in the present disclosure. The bituminous products are introduced into a baling process line. The cooling efficiency is enhanced by utilizing the process. Viscous bitumen products are made in the form of spiral bitumen bale. “BituBale Film capsules” are produced by the process. Polymer additives are added to bitumen/asphalt, by the process, to enhance the durability and to get good gripping surfaces. The process enhances the homogenous nature of the products. The process for preparing bitumen bale for clean, safe, eco-friendly and cost-effective packing, storing and transporting of viscous bitumen products is a clean, safe, environmentally friendly and cost effective method.
Abstract: A method for forming a modified asphalt binder composition, the method comprising preparing a phosphorus pentasulfide-binder concentrate by introducing and mixing phosphorus pentasulfide and asphalt binder, where the phosphorus pentasulfide-binder concentrate includes greater than 0.5 parts by weight phosphorus pentasulfide per 100 parts by weight asphalt, preparing a polymer-binder concentrate by introducing and mixing polymer and asphalt binder, where the polymer-binder concentrate includes greater than 5 parts by weight polymer per 100 parts by weight asphalt, and introducing and mixing the phosphorus pentasulfide-binder concentrate with the polymer-binder concentrate to form a modified asphalt binder composition.
Type:
Grant
Filed:
December 1, 2009
Date of Patent:
October 19, 2010
Inventors:
William L. Hergenrother, Peter W. Boerner, Christine Rademacher, Daniel F. Graves, Timothy P. Reece, Herbert L. Wissel
Abstract: A rejuvenating agent having a viscosity of from 200 to 60000 cSt at 60° C. and comprising 10-90 weight % palm oil and 90-10 weight % bitumen, where the percentages are based upon the total weight of the composition, is disclosed. The rejuvenating agent is suitable for use in hot in-place and hot in-plant recycling processes.
Abstract: Disclosed herein are a homogeneous sulfur-modified polymer composition, a method of preparing sulfur-modified polymer, and an asphaltic concrete mixture.
Type:
Application
Filed:
March 29, 2010
Publication date:
October 7, 2010
Applicant:
Saudi Arabian Oil Company
Inventors:
Ibnelwaleed A. Hussein, Mohammed H. Al Mehthel, Hamad I. Al-Abdul Wahhab, Saleh H. Al Idi, Junaid Saleem Akhtar
Abstract: A sealant composition for roofing shingles that includes a base asphalt, a linear and/or a radial copolymer, oil, and a wax is provided. The linear copolymer has an A-B di-block or an A-B-A tri-block structure. The radial copolymer may have an (A-B)n radial structure, where n is at least 4, or a tri-block (A-B-A) radial structure having from 4 to 8 arms. Blocks A and B may individually represent (1) styrene and butadiene or (2) styrene and isoprene. The oil is a petroleum-based oil that both “softens” the asphalt and reduces the viscosity of the sealant composition. The wax may be a bis-stearamide wax. Additionally, the sealant composition may be reacted with elemental sulfur to crosslink the copolymer blend. The sealant composition seals at temperatures lower than conventional sealants and promotes the easy release of the shingle from a shingle bundle.
Type:
Application
Filed:
March 19, 2010
Publication date:
September 23, 2010
Inventors:
James E. Loftus, Donn R. Vermilion, Jason D. Guerra
Abstract: A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one bituminous binder to examine, where the bituminous binder comprises bitumen and one or more polymers, where the one or more polymers include a sufficient amount of conjugated diene such that at least 2.5% of the bituminous binder's weight comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the bituminous binder and an aggregate; testing each bituminous binder for binder fracture energy properties; and selecting a bituminous binder for use in the crack resistant layer.
Type:
Application
Filed:
June 1, 2010
Publication date:
September 23, 2010
Applicant:
ROAD SCIENCE, LLC
Inventors:
James J. Barnat, Phillip Blankenship, Richard Steger, Todd Lynn, Jason Bausano, Jehna Dent, Tim McKinney
Abstract: A bitumen based adhesive that includes asphalt and/or coal tar and at least one silylated polymer and/or silyl-terminated polymer. The bitumen based adhesive can also include a plasticizer.
Abstract: A bituminous composition with improved paving performance, comprising a high-concentration-emulsifier bituminous emulsion is disclosed. The high-concentration-emulsifier bitumen emulsion has a higher content of surfactant than the conventional bitumen emulsion, thus facilitating the use of low levels of emulsion in the finished bituminous paving composition. Additionally, the high-concentration-emulsifier bitumen emulsion has superior surfactant dispersion property compared to the inverted bitumen dispersion, thereby enhancing the mixing and coating performance of the bituminous composition. The disclosed bituminous compositions may be used in a pavement construction at a much lower temperatures range compared to the conventional hot-mix bituminous composition, yet it develops adhesive strength and load-bearing strength properties at rates comparable to those of hot mix bituminous paving compositions.
Abstract: Scrap plastic is treated for incorporation into asphalt-aggregate compositions by first shredding the plastic, then heating the shredded plastic to harden any pieces of film or flexible plastic and to generally reduce the size of the shreds without decomposing the plastic, and then grinding the heat-treated pieces to a size that can be blended with an aggregate. The blend is then combined with an asphalt binder to produce an asphalt-aggregate composition. No discrimination among, or selection of, specific types or classes of plastic is required.
Type:
Grant
Filed:
July 22, 2008
Date of Patent:
August 10, 2010
Assignee:
Sierra Process Systems, Inc.
Inventors:
John Eric Partanen, Stanley W. Ellis, David Bartell
Abstract: A bitumen based adhesive that includes asphalt and/or coal tar and at least one silylated polymer and/or silyl-terminated polymer. The bitumen based adhesive can also include a plasticizer.
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, 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.
Type:
Application
Filed:
March 31, 2010
Publication date:
July 29, 2010
Inventors:
Alex K. Apeagyei, William G. Buttlar, Barry J. Dempsey
Abstract: There is described a machine for homogenizing a bitumen-based mixture with polymer granules. The machine includes an outer container and a cylindrical sleeve, which is housed within the outer container and is provided with a perforated side wall, on which a plurality of through apertures is obtained, each of the holes comprising a sharp cutting edge. The machine further includes a homogenizer assembly, which is mounted so as to axially rotate within the sleeve in order to rotate about a vertical axis, and is configured so as to displace, during its rotation, at least part of the bitumen-based mixture and the polymer granules along a direction which is substantially tangential to the inner surface of the perforated side wall of the sleeve so as to induce the polymer granules to impact against the sharp cutting edge of the through apertures.
Abstract: A sealant composition comprising a binder and a filler material. The binder comprising a residual pitch product and an elastomeric material and, optionally, asphalt, a microcrystalline wax, and/or oil. The filler material is present in an amount of between about 11 vol. % and about 67 vol. % of the sealant composition. In one embodiment, the filler material is present in an amount of between about 25 wt. % and about 70 wt. % of the sealant composition.
Abstract: A consumable packaging composition is provided for packaging clear-binders, made of one or several packaging materials, alone or in combination, such as plastics, polymers and extenders, and which melting point is adjusted so that the packaging material melts when in contact with the hot aggregates as methods of using them, are also disclosed. Optionally, and prior to packaging, the clear-binder may be mixed together with one or several color pigments used for production of colored mixes depending on the end-user requirements. In a preferred practice, the size of the packaged clear-binder product containers is adjusted such that, after transport and storage, the packaged material together with the packaging material can be directly incorporated along any of the steps of a production process that uses clear-binders. The packaged clear-binder material permits handling and manipulation to be reduced to the minimum necessary, thus avoiding the need for pre-heating and hot-storage of clear-binders.