E01C7/18

Method for evaluating and utilizing sonnenbrand basalt aggregate

Provided is a method for evaluating and utilizing sonnenbrand basalt aggregate, including steps as follows: mixing a basalt aggregate defined as sonnenbrand basalt into an asphalt mixture; carrying out thermal aging experiments at different temperatures and durations to obtain a theoretical trigger time t.sub.i for the sonnenbrand phenomenon under a thermal aging temperature T.sub.i; further calculating to obtain a theoretical thermal aging factor AF.sub.0 for the sonnenbrand phenomenon; statistically calculating a thermal aging factor AF for an actual construction to evaluate a performance of the basalt aggregate, if AF<AF.sub.0, the construction may be carried out normally, if AF≥AF.sub.0, then shortening the transportation and waiting duration and/or lowering the factory temperature of the asphalt mix so that the thermal aging factor AF<AF.sub.0 during actual construction.

Foil-containing water impermeable and heat reflective pavement structure
11661709 · 2023-05-30 · ·

A flexible pavement structure comprises a surface layer, a base layer, a sub-base layer, and a subgrade layer. Herein, the surface layer is adjacent to and above the base layer, and the sub-base layer is adjacent to and above the subgrade layer. The flexible pavement structure further comprises a layered system composed of first, second, and third materials different from each other, and is disposed as an interface layer between the base layer and the sub-base layer. The first material is a geotextile fabric selected from a group consisting of polypropylene and polyethylene, providing ground stabilization or reinforcement properties. The second material is a waterproof heat insulation material selected from a group consisting of cross-linked polyethylene foam and laminated aluminum foil, providing waterproofing or impermeability properties. The third material is a glass foamed insulation material.

Frost heave resistant pavement structure
11661710 · 2023-05-30 · ·

A flexible pavement structure comprises a surface layer, a base layer, a sub-base layer, and a subgrade layer. Herein, the surface layer is adjacent to and above the base layer, and the sub-base layer is adjacent to and above the subgrade layer. The flexible pavement structure further comprises a layered system composed of first, second, and third materials different from each other, and is disposed as an interface layer between the base layer and the sub-base layer. The first material is a geotextile fabric selected from a group consisting of polypropylene and polyethylene, providing ground stabilization or reinforcement properties. The second material is a waterproof heat insulation material selected from a group consisting of cross-linked polyethylene foam and laminated aluminum foil, providing waterproofing or impermeability properties. The third material is a glass foamed insulation material.

Asphalt paving and stripping system and method using hydrophobic microwave absorbing material
11566384 · 2023-01-31 ·

Asphalt paving and stripping system and method involves the use of a primer, comprising hydrophobic microwave absorbing material mixed in a hydrophobic liquid, between an asphalt layer and a base layer below. The primer is configured to be deposited on the base layer at room temperature without preheating. Heating the hydrophobic microwave absorbing material, sandwiched between the asphalt and base layers, by microwave energy, allows striping of the asphalt layer from the base layer by a wheel loader.

METHOD FOR EVALUATING AND UTILIZING SONNENBRAND BASALT AGGREGATE
20230384249 · 2023-11-30 ·

Provided is a method for evaluating and utilizing sonnenbrand basalt aggregate, including steps as follows: mixing a basalt aggregate defined as sonnenbrand basalt into an asphalt mixture; carrying out thermal aging experiments at different temperatures and durations to obtain a theoretical trigger time t.sub.i for the sonnenbrand phenomenon under a thermal aging temperature T.sub.i; further calculating to obtain a theoretical thermal aging factor AF.sub.0 for the sonnenbrand phenomenon; statistically calculating a thermal aging factor AF for an actual construction to evaluate a performance of the basalt aggregate, if AF<AF.sub.0, the construction may be carried out normally, if AF≥AF.sub.0, then shortening the transportation and waiting duration and/or lowering the factory temperature of the asphalt mix so that the thermal aging factor AF<AF.sub.0 during actual construction.

METHOD FOR EVALUATING AND UTILIZING SONNENBRAND BASALT AGGREGATE
20230384249 · 2023-11-30 ·

Provided is a method for evaluating and utilizing sonnenbrand basalt aggregate, including steps as follows: mixing a basalt aggregate defined as sonnenbrand basalt into an asphalt mixture; carrying out thermal aging experiments at different temperatures and durations to obtain a theoretical trigger time t.sub.i for the sonnenbrand phenomenon under a thermal aging temperature T.sub.i; further calculating to obtain a theoretical thermal aging factor AF.sub.0 for the sonnenbrand phenomenon; statistically calculating a thermal aging factor AF for an actual construction to evaluate a performance of the basalt aggregate, if AF<AF.sub.0, the construction may be carried out normally, if AF≥AF.sub.0, then shortening the transportation and waiting duration and/or lowering the factory temperature of the asphalt mix so that the thermal aging factor AF<AF.sub.0 during actual construction.

BIOBASED ASPHALT REJUVENATING EMULSION

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.

Bitumen solid at ambient temperature
11447636 · 2022-09-20 · ·

Granules of material usable as a road binder or sealing binder, including a core and a coating layer, where: the core is made of a first composition including at least one material chosen from: a bitumen base, pitch, and clear binder, and the coating layer is made of a second composition including: at least one viscosifying compound, at least one first anticaking agent selected from alkali and alkaline-earth metal silicates, and at least one second anti-caking agent distinct from the silicates. Also, a method for producing granules of material that can be used as a road binder or sealing binder, and the use thereof as a road binder, in particular for the production of coated materials. Also, a method for producing coated materials from granules of material that can be used as a road binder or as a sealing binder and a method for transporting and/or storing and/or handling granules.

Asphalt composition comprising humins obtained from dehydration of carbohydrates

An asphalt composition comprising aggregates and a binder material, wherein the binder material comprises humins, which humins comprise carbonaceous water-insoluble by-products of the dehydration of carbohydrates and/or 5-hydroxymethylfurfural and/or ethers or esters of 5-hydroxymethylfurfural. The invention also provides a binder material for use in asphalt compositions comprising from 1 to 95% wt, preferably from 5 to 60% wt of such humins, based on the weight of the binder material. The invention further provides for the use of such humins in the manufacture of binder material for asphalt compositions and the use of such humins as binder material in asphalt compositions.

Biobased asphalt rejuvenating emulsion

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.