A non-blown roofing grade bitumen composition comprising bitumen feedstock, polyolefin having a molecular weight of from about 800 to about 50,000 g/mol, and optionally one or more additives, wherein the softening point of the composition is above 70 C. as determined according to method ASTM D36 and the penetration of the composition is at least about 12 dmm at 25 C. as determined according to method ASTM D5. A method of making the same.

Asphalt compositions for roofing applications are provided, as well as filled asphalt material comprising the asphalt compositions and methods for making asphalt compositions and filled asphalt material. More particularly, the asphalt compositions comprise non-oxidized base asphalt; and a low molecular weight polyolefin present in an amount of from about 0.5 to about 15 wt % based on the total weight of the asphalt composition. The asphalt composition has a softening point from about 87.8 to about 160 C. (about 190 to about 320 F.), a penetration of greater than 12 deci-millimeters @ 25 C., as well as improved stain resistance and heat resistance.

Disclosed is a glass fiber-reinforced composite material, an asphalt mixture using the same, and a manufacturing method thereof, the method comprising manufacturing, as a mixed structure, a bundle type fiber reinforcing material by coating with a polypropylene resin; a scrap reinforcing material having pellet or particle shaped glass fiber scrap, the glass fiber scrap having economical and outstanding physical properties and several strands of glass fiber; and adding the same to a hot-mix asphalt mixture, thereby capable of being injected at a plant construction site in a simple manner and improving the performance of the asphalt by preventing the phenomenon of the fiber becoming entangled within the produced hot asphalt mixture.

A method for installing hot asphalt pavement includes heating an aggregate to a temperature of from about 350 F. to about 400 F. using an emitter comprising a birefringent material, the emitter generating electromagnetic radiation having a wavelength of from 2 microns to 1 millimeter, wherein the aggregate is a recycled asphalt pavement; adding the aggregate to an asphalt in a mill to yield a mixture of aggregate with baked-on asphalt; laying the mixture down over a base to form a first layer of lift; and compacting the first layer.

A method for repairing an aged asphalt pavement is provided. The method involves passing an emitter over the aged asphalt pavement, wherein the emitter generates electromagnetic radiation having a wavelength of from 20 microns to 1 mm that penetrates into the pavement to a depth of at least 2 inches. The asphalt pavement is repaired by disturbing voids and interstices in the damaged pavement without dehydrogenation of the asphalt, such that oligomers present in the aged asphalt are linked together into longer polymer chains to improve ductility of the aged asphalt.

This invention encompasses systems, methods, and apparatuses for low temperature preparation of rubber modified asphalt cement as well as resulting compositions.

Lightweight waterproofing membranes are for protecting structures, such as buildings and bridges. The lightweight waterproofing membrane is produced by coating a reinforcing material with a coating formulation. The coating formulation has bitumen and plasticizer blend, petroleum coke (petcoke), and elastomeric block polymer or plastomeric polymer or both.

A green high viscosity toughness asphalt modifier includes following raw material components by weight: 70-232 parts of waste rubber and plastic mixture; 4-10 parts of nano-clay material; and 15-50 parts of compatilizer. A preparation method of the green high viscosity toughness asphalt modifier includes steps of (1) preparing masterbatch by a first melt blending extrusion, which includes weighing the nano-clay material, the waste rubber and plastic mixture and the compatilizer in accordance with a weight ratio of 1:(2-4):(1-2), mixing evenly at high speed, extruding and granulating for obtaining the masterbatch; and (2) performing a second melt blending extrusion, which includes mixing evenly the waste rubber and plastic mixture, the masterbatch obtained by the step (1) and the compatilizer with a weight ratio of (5-9):(1-5):(1-3) at high speed, extruding and granulating for obtaining the asphalt modifier.

A solid bitumen pellet, including a mixture of bitumen and an additive, where the additive operates to increase the viscosity of the mixture. Optionally, the pellet includes a protective shell.

A solid bitumen pellet, including a mixture of bitumen and an additive, where the additive operates to increase the viscosity of the mixture. Optionally, the pellet includes a protective shell.