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2721results about "In situ pavings" patented technology

Microwave-absorbing asphalt concrete pavement material composition

InactiveCN101736671ASimple preparation processIncreased heating rate by microwave heatingIn situ pavingsMicrowaveSnow melting
The invention discloses a road asphalt concrete pavement material composition which is applicable to microwave absorption. Magnetic powder is added for replacing all or part of limestone mineral powder in the traditional asphalt concrete raw material; magnetic sand or silicon carbide sand is adopted for replacing all or part of natural aggregate in the traditional asphalt concrete raw material, wherein the weight of the magnetic powder accounts for 3-15% of the total weight of the composition; the weight of the magnetic sand or the silicon carbide sand accounts for 2-50% of the total weight of the composition; the weight of asphalt accounts for 5-10% of the total weight of the composition; the weight of the limestone mineral powder accounts for 0-5% of the total weight of the composition; and the weight of the natural aggregate accounts for 20-90% of the total weight of the composition, and the microwave-absorbing asphalt concrete pavement material composition is finally obtained. Compared with the traditional asphalt concrete, the microwave-absorbing asphalt concrete can improve the microwave heating rate by a plurality of times to dozens of times. The composition can greatly improve the microwave de-icing and snow-melting efficiency, and be extensively applied in a variety of asphalt concrete highway pavements, parking aprons of airports, factories, offices, schools, troops and other units for use.
Owner:CHANGAN UNIV

Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same

Provided is a temperature-adjusted and modified recycled ASCON composition for reusing 100% of waste ASCON for road pavement, and a method for manufacturing same, wherein the composition is used in asphalt pavement as a material for the wearing course, surface course, binder course, and base course, and the method comprises: feeding 100 wt % of waste ASCON aggregate having up to a 53 mm particle size distribution into a mixer via a feeding inlet for new aggregate; adding 0.1 to 20 wt % of a recycling modifier and 0.1 to 20 wt % of a temperature-adjusting additive to the waste ASCON via the feeding via the inlet for new aggregate; and homogeneously mixing said materials at 5 to 180 DEG C for 0.5 to 3 minutes. The recycling modifier improves the physical properties of recycled ASCON, while the temperature-adjusting additive adjusts the temperatures for producing and constructing recycled ASCON. The present invention may provide economic, social and technological conveniences by improving the overall recycling technology of waste ASCON. The conveniences may be achieved by virtue of: cost-saving in production by using only waste ASCON without any new materials; saving waste disposal costs; preventing the destruction of nature to obtain aggregate; reducing the consumption of new asphalt; preventing environmental pollution through the reuse of waste products; preventing the early occurrence of plastic deformation and fatigue cracks due to improving the quality of the recycling modifier; economic benefits from the prolonged lifespan of road pavement; the possibility of being used as a material for the wearing course and surface course of major roadways; saving energy in the production and construction of recycled ASCON by adding the temperature-adjusting additive; and reducing greenhouse gas emissions.
Owner:许政道
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