摘要:
Provided are an asphalt composition for road pavement, which is excellent in drying strength, strength after immersion in water, and strength after immersion in petroleum, a method for producing the same, and a road paving method. [1] An asphalt composition for road pavement including asphalt, a polyester resin, and an aggregate, wherein the polyester resin is a polyester having an alcohol component-derived constituent unit containing 65 mol% or more of an alkylene oxide adduct of bisphenol A and a carboxylic acid component-derived constituent unit containing 50 mol% or more of at least one selected from the group consisting of terephthalic acid and isophthalic acid and has a softening point of 95°C or higher and 130°C or lower and a hydroxyl group value of 20 mgKOH/g or more and 50 mgKOH/g or less, and a ratio of the polyester resin is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of the asphalt; [2] a method for producing an asphalt composition for road pavement including a step of mixing asphalt, a polyester resin, and an aggregate at 130°C or higher and 200°C or lower for 30 seconds or more, wherein the polyester resin is a polyester having an alcohol component-derived constituent unit containing 65 mol% or more of an alkylene oxide adduct of bisphenol A and a carboxylic acid component-derived constituent unit containing 50 mol% or more of at least one selected from the group consisting of terephthalic acid and isophthalic acid and has a softening point of 95°C or higher and 130°C or lower and a hydroxyl group value of 20 mgKOH/g or more and 50 mgKOH/g or less, and the polyester resin is mixed in a ratio of 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of the asphalt; and [3] a road paving method including a step of laying an asphalt composition obtained by the method as set forth above in [2], thereby forming an asphalt paving material layer, are disclosed.
摘要:
A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.
摘要:
Disclosed herein are asphalt compositions. In some embodiments, the asphalt compositions can include asphalt, a polymer, and a basic salt such as aluminum sulfate. In some embodiments, the asphalt compositions can include asphalt, a polymer, and an inorganic acid such as phosphoric acid. The asphalt compositions can include asphalt in an amount of from 50 wt% to 99.9 wt%, based on the weight of the asphalt composition. In some embodiments, the asphalt compositions can include a styrene-butadiene copolymer in an amount of from 0.05 wt% to 10 wt%, based on the weight of the asphalt composition. The basic salt can be present in an amount of from 0.01 wt% to 5 wt%, based on the weight of the asphalt compositions. The acid can be present in an amount of from 0.005 wt% to 0.1 wt%, based on the weight of the asphalt compositions. Methods of making and using the asphalt compositions are also disclosed.
摘要:
Composition bitume/polymère thermoréticulable à base d'au moins un élastomère de type S-B1-B2, avec S un polymère styrénique ou autre vinylaromatique, B1 et B2 des polybutadiènes, la composition comprenant un adjuvant de type polymère 5 oléfinique, la composition ayant des propriétés mécaniques améliorées. Utilisation de ces compositions dans les domaines des applications routières telles que les enrobés à chaud; les enrobés tièdes; les enrobés à froid par exemple les enrobés coulés à froid ou les graves émulsions; ou les enduits superficiels, par exemple les émulsions ou les bitumes fluxés; et dans les domaines des applications industrielles, par exemple dans la 10 fabrication de revêtements intérieurs et extérieurs.
摘要:
Gegenstand der vorliegenden Erfindung ist ein neuartiges Verfahren zur Herstellung von gummimodifiziertem Bitumen unter Einsatz von vulkanisiertem Gummi.
摘要:
A polymer-modified emulsion used for rejuvenating or repairing deteriorated asphalt pavement includes an asphalt phase containing an asphalt and a biobased rejuvenating agent, and an aqueous phase including water and an emulsifying agent, and one or more polymers included in the asphalt phase, the aqueous phase or both.
摘要:
The present invention relates to the use of sequential copolymers (P), comprising at least one chain (C) capable of being obtained by micellar polymerization, for keeping solid particles (p) in suspension in a fluid (F) where said chain (C) is soluble.
摘要:
Disclosed herein are rejuvenating compositions for asphalt applications. In one aspect, the rejuvenating composition comprises a polymerized oil having a polymeric distribution ranging from about 2 to about 80 wt% oligomer content and Hildebrand solubility ranging from about 6 to about 12. In another aspect, the rejuvenating composition comprises an oil having a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100ºC to about 400ºC. In yet another aspect, the rejuvenating composition comprises a modified oil having a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100ºC to about 400ºC.
摘要:
Described herein is an emulsion for use in asphalt rejuvenation applications, comprising an oil phase comprising (1) a polymerized 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 less than about 8 wt%; and (2) an aqueous phase, comprising a surfactant. The emulsion may be incorporated into asphalt paving, roofing, and coating applications and especially aged or recycled asphalt thereby obtaining rejuvenated asphalt.
摘要:
A mineral-compatible cationic emulsion composition with polymer stabilizers, and methods for utilizing same in paving and other applications is disclosed. In one aspect, a bitumen-in-water emulsion composition includes at least one bitumen material, at least one polymer stabilizer, at least one emulsifier, and water, where the emulsifier is a cationic surfactant, an amphoteric surfactant, or a mixture of both, and the polymer stabilizer is a natural or synthetic cationic polymer consisting of alkylene polyamines, alkyl polyamines, polyquaternary polymers, polyvinylamine, polyvinylimidazoline, polyester polyquaternary polymers, polyether polyquaternary polymers, or mixtures thereof. The inclusion of polymer stabilizer in the cationic emulsion increases the stability of the emulsion and increases the compatibility of the cationic emulsion with negatively charged minerals.