US Pat. No. 9,187,645

POLYMER-MODIFIED ASPHALT COMPOSITIONS

Firestone Polymers, LLC, ...

1. A process for preparing a modified asphalt composition, the process comprising:
introducing to a molten asphalt composition from about 0.1 to about 10 parts by weight, per 100 parts by weight of the modified
asphalt composition, of a linear diene end-capped copolymer defined by the formula:

?-(D-V-d)x
where each D is independently a polydiene block, each V is independently a vinyl aromatic block, each d is a polydiene end
cap, ? is a coupling moiety, and x is 2;

where ? is the residue of a coupling agent defined by the formula R1nM1X4-n, where each R1 is a hydrocarbyl group, M1 is silicon, X is a halogen atom, and n is 2.

US Pat. No. 9,732,478

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. A method of reducing voids in asphalt pavement joints defined between first and second side-by-side adjacent asphalt paving
passes which method comprises:
providing a joint composition that comprises:
an asphalt binder selected from paving grade asphalts;
an elastomeric polymer;
a wax modifier; and
at least one of fumed silica and fumed alumina;
applying a band of the joint composition to a surface upon which an asphalt pavement joint will be formed between first and
second side-by-side adjacent asphalt paving passes;

forming first and second side-by-side adjacent asphalt paving passes on the surface using hot mix asphalt so that a joint
defined between the first and second side-by-side asphalt paving passes is aligned over the band of the joint composition,

allowing the joint composition to migrate upward into the hot asphalt paving passes so as to reduce air voids in the hot asphalt
paving passes in the area of the joint to 7% or less, wherein the at least one of fumed silica and fumed alumina imparts lateral
flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition.

US Pat. No. 9,090,773

METHOD FOR PREPARING SILICON—SULFUR COMPOUNDS AND THEIR USE IN BITIMINOUS COMPOSITIONS

Heritage Research Group, ...

1. A polymer-modified asphalt composition produced by the steps of:
a) combining together an organosilane or a mixture of organosilanes, a sulfide, a halogen acceptor, and a solvent to form
a reaction mixture;

b) allowing the organosilane to react with the sulfide in the presence of the halogen acceptor to produce a sulfur containing
organosilane; and

c) applying the sulfur containing organosilane to a polymer modified asphalt binder as an additive and/or as a crosslinking
agent.

US Pat. No. 9,739,018

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. A longitudinal asphalt pavement construction joint area for construction of pavements that comprises a first substrate
that defines a surface to be paved, a hot mix application portion and a void reducing asphalt membrane composition provided
between the first substrate and the hot mix application, the void reducing asphalt membrane composition comprising:
an asphalt binder;
an elastomeric polymer;
a wax modifier; and at least one of fumed silica and fumed alumina
wherein the asphalt binder comprises 85 to 97 wt. % of the void reducing asphalt membrane composition, and wherein the at
least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing
asphalt membrane composition.

US Pat. No. 9,822,495

APPARATUS AND METHOD FOR APPLYING ASPHALT BINDER COMPOSITIONS INCLUDING VOID REDUCING ASPHALT MEMBRANE COMPOSITIONS FOR PAVING APPLICATIONS

Heritage Research Group, ...

1. A method of applying an asphalt binder composition along a longitudinal joint area of roadway during construction or repair
of an asphalt pavement which comprises:
providing:
a mobile vehicle having a chassis extending in a longitudinal direction which longitudinal direction is aligned with a forward/rearward
direction of travel of said mobile vehicle;

at least one storage tank supported on the chassis containing an asphalt binder composition; and
an asphalt binder spraying system that consists of a plurality of spray nozzles that are all located outward beyond an outer
side of the chassis and configured to dispense the asphalt binder composition from the at least one storage tank to form a
discrete narrow strip or band that is no wider than a combined spray pattern of the plurality of spray nozzles of the asphalt
binder spraying system and which narrow strip or band extends in the longitudinal direction,

moving the mobile vehicle along a roadway to be repaired or paved with asphalt; and
dispensing the asphalt binder through the plurality of spray nozzles in said longitudinal strip or band along the longitudinal
joint area.

US Pat. No. 10,053,820

BINDER COMPOSITION FOR IMPROVED TACK COAT AND STRESS ABSORBING MEMBRANE INTERLAYER APPLICATION FOR ROAD CONSTRUCTION

Heritage Research Group, ...

1. A non-tracking tack coat or stress absorbing membrane interlayer formed on pavement surface which non-tracking tack coat or stress absorbing membrane interlayer is applied across the entire width of the pavement surface as a binder composition that comprises:an asphalt binder;
an elastomeric polymer,
a wax modifier; and
at least one of:
i) fumed silica or fumed alumina; and
ii) a saponified fatty acid and a resin acid gelling compound,
wherein the asphalt binder comprises 85 to 97 wt. % of the binder composition.
US Pat. No. 10,060,080

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. A method of reducing air voids in a discrete portion of an asphalt pavement which comprises:providing an asphalt membrane composition that comprises:
an asphalt binder,
an elastomeric polymer,
a wax modifier, and
at least one of fumed silica or fumed alumina;
applying a discrete band of the asphalt membrane composition on a surface to be paved with a hot mix asphalt;
paving over the surface and discrete band of asphalt membrane composition with a hot mix asphalt to form a pavement; and
allowing the asphalt membrane composition to migrate into the hot mix asphalt and reduce air voids in the pavement by migrating into the hot mix asphalt.
US Pat. No. 10,364,535

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. A method of forming a pavement construction joint, comprising:dispensing a band of a void reducing joint composition on a substrate using at least one spray application vehicle, wherein the band comprises a width of about 4 to about 24 inches and a sufficient thickness to permit migration upward into a paving pass positioned over the band to reduce an air void volume in such paving pass;
permitting the application of two paving passes to form a pavement construction joint having a volume of air voids, wherein the pavement construction joint is positioned over the band; and
allowing at least a portion of the joint composition to migrate upward into the two paving passes along the pavement construction joint to reduce the volume of air voids.

US Pat. No. 10,655,281

BINDER COMPOSITION FOR IMPROVED TACK COAT AND STRESS ABSORBING MEMBRANE INTERLAYER APPLICATION FOR ROAD CONSTRUCTION

Heritage Research Group, ...

1. A non-tracking tack coat layer or stress absorbing membrane layer covering the entire width of a pavement surface, said tack coat layer or stress absorbing membrane comprising:an asphalt binder;
an elastomeric polymer,
a wax modifier; and
a filler selected from fumed silica and fumed alumina,
wherein the asphalt binder comprises about 85 to about 97 wt. % of the tack coat layer or stress absorbing membrane.

US Pat. No. 10,487,459

BINDER COMPOSITION FOR IMPROVED TACK COAT AND STRESS ABSORBING MEMBRANE INTERLAYER APPLICATION FOR ROAD CONSTRUCTION

Heritage Research Group, ...

1. A method of installing an asphalt pavement, comprising:identifying a surface to be paved;
applying a non-tracking layer of binder composition to the surface, wherein the binder composition consists essentially of:
at least one asphalt binder,
at least one elastomer, and
ethylene bis stearamide; and
permitting the application of an asphalt layer over the non-tracking layer of binder composition.

US Pat. No. 10,465,345

APPARATUS AND METHOD FOR APPLYING ASPHALT BINDER COMPOSITIONS INCLUDING VOID REDUCING ASPHALT MEMBRANE COMPOSITIONS FOR PAVING APPLICATIONS

Heritage Research Group, ...

1. An apparatus for applying an asphalt binder composition to a roadway, the apparatus comprising:a mobile vehicle having a chassis extending in a longitudinal direction, such that the longitudinal direction is aligned with a forward/rearward direction of travel of said mobile vehicle;
at least one storage tank containing the asphalt binder composition, said asphalt binder composition comprising an asphaltic material; and
an asphalt binder spraying system comprising a plurality of spray nozzles aligned substantially linearly in the longitudinal direction, wherein the plurality of spray nozzles are configured to dispense the asphalt binder composition in a downward direction to form a longitudinal strip or band onto the roadway,
wherein the plurality of spray nozzles are coupled to a common spray bar.
US Pat. No. 10,435,850

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. A roadway structure comprising:a substrate;
a hot mix application portion positioned over the substrate, wherein said hot mix application portion comprises first and second adjacent paving passes defining a longitudinal joint, and wherein the first and second adjacent paving passes contain air voids along the longitudinal joint; and
a spray-applied band of void reducing joint composition positioned between the substrate and the hot mix application portion, wherein the band is below the longitudinal joint, and wherein at least at portion of the void reducing joint composition fills at least some of the air voids.
US Pat. No. 10,626,031

TREATMENT OF SLUDGES AND FLOCCULANTS USING INSOLUBLE MINERAL COLLOIDAL SUSPENSIONS

Heritage Research Group, ...

1. A method of separating sludges which comprises:obtaining an industrial sludge comprising a mixture of an oil, water, and suspended particles;
adding an insoluble magnesium hydroxide colloidal suspension into the industrial sludge;
permitting the formation of an agglomeration comprising the suspended particles and magnesium hydroxide; and
separating each of the agglomeration, the oil, and the water with a process consisting essentially of three-phase centrifugation.
US Pat. No. 10,480,130

VOID REDUCING ASPHALT MEMBRANE COMPOSITION, METHOD AND APPARATUS FOR ASPHALT PAVING APPLICATIONS

Heritage Research Group, ...

1. An asphalt composition comprising:an asphalt binder;
an elastomeric polymer;
a wax modifier; and
a filler selected from fumed silica and fumed alumina,
wherein the composition is formulated to include 85 to 97 wt. % of the asphalt binder,
1 to 6 wt. % of the elastomeric polymer,
1 to 5 wt. % of the wax modifier, and
1 to 10 total wt. % of the filler selected from fumed silica and fumed alumina.