摘要:
One embodiment provides a process for preparing an asphalt-coated crumb rubber composition that meets the specification set forth in ASTM D80-02 or deviations thereof which may be established by the specifying agency from time to time. The process generally comprises obtaining asphalt of different penetration grades, combining the asphalt of each grade with preselected chemicals to form separate premixed components, blending the premixed components together under predetermined conditions to form, upon curing, an asphalt-coated crumb rubber composition that meets certain physical requirements for asphalt-rubber binder (ARB), such as those set forth in ASTM D8-02. Advantageously, the resulting asphalt-coated crumb rubber composition not only meets the physical requirements of ARB used in road paving but also has improved dispersion of the rubber, such as dispersion of the rubber in an oil-in-water emulsion of an asphalt.
摘要:
One embodiment provides a process for preparing an asphalt-coated crumb rubber composition that meets the specification set forth in ASTM D80-02 or deviations thereof which may be established by the specifying agency from time to time. The process generally comprises obtaining asphalt of different penetration grades, combining the asphalt of each grade with preselected chemicals to form separate premixed components, blending the premixed components together under predetermined conditions to form, upon curing, an asphalt-coated crumb rubber composition that meets certain physical requirements for asphalt-rubber binder (ARB), such as those set forth in ASTM D8-02. Advantageously, the resulting asphalt-coated crumb rubber composition not only meets the physical requirements of ARB used in road paving but also has improved dispersion of the rubber, such as dispersion of the rubber in an oil-in-water emulsion of an asphalt.
摘要:
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.
摘要:
Thermoplastic compositions useful for sealing longitudinal joints of substrates, for example, roadways and pavement, are provided herein. Formulations including the composition and methods of using the thermoplastic composition to seal longitudinal joints are also disclosed.
摘要:
A method of producing a road making material includes the sequential steps of, separately heating aggregate and bitumen, mixing the heated aggregate and bitumen, and adding plastics to the heated mix to produce a bitumous compound.
摘要:
Procédé de préparation d'une composition bitume-polymère comprenant le mélange et le chauffage d'une base bitume-polymère avec au moins : • un composé de formule générale (I) : R 1 -(COOH) z dans laquelle R 1 est une chaîne hydrocarbonée, linéaire ou ramifiée, saturée ou insaturée comprenant de 4 à 68 atomes de carbone, et z un entier variant de 1 à 4, et • un composé (II) choisi parmi les composés susceptibles de réagir suivant une réaction acido-basique, une réaction d'amidation ou une réaction d'estérification avec le groupement acide carboxylique de l'additif (I). La présente invention concerne également la composition obtenue par ce procédé et un kit composé d'une composition bitume-polymère comprenant un additif (I), sous forme de pain, et d'une capsule comprenant un composé (II).
摘要:
A modified asphalt composition comprises or is produced from asphalt and phosphorous acid. The composition optionally further comprises one or more of an ethylene copolymer that comprises copolymerized units derived from ethylene and an epoxy-containing comonomer and a nonreactive polymer such as a styrene/conjugated-diene block copolymer. Further provided are processes for producing the composition in addition to products such as paving materials and roofing materials that comprise the compositions.
摘要:
This invention relates to polyepoxy-polymer-linked-asphalt having enhanced properties made by reacting a glycidyl-functionalized ethylene copolymer with reactive asphalt, wherein the glycidyl-functionalized ethylene copolymer has a glycidyl-containing comonomer content of 15.1 weight percent or greater.
摘要:
Described herein is a polymerized petroleum based or biorenewable oil obtain by blowing and an optional stripping process, comprising a polymeric distribution having about 2 to about 80 wt% oligomer content and a polydispersity index ranging from about 1.0 to about 20.0. Methods of manufacturing the polymerized oil as well as its incorporation into asphalt, roofing, and coating applications are also described.
摘要:
Described herein is a polymerized biorenewable, petroleum based, previously modified, or functionalized oil, comprising a polymeric distribution having about 2 to about 80 wt% oligomer content, a polydispersity index ranging from about 1.0 to about 5.0, and sulfur content ranging from 0.001 wt% to about 8 wt%. Methods of manufacturing the polymerized oil as well as its incorporation into asphalt paving, roofing, and coating applications are also described.