Asphalt compositions comprising hydrogenated and aminated vegetable oil, asphalt products made from such asphalt compositions, and the methods of making and using such compositions and products

a technology of hydrogenated and aminated vegetable oil and asphalt composition, which is applied in the field of asphalt compositions, to asphalt products made from such asphalt compositions, and the methods of making and using such compositions, and can solve the problems of high cost of novachip bonded friction course system, high cost of spray paver machines, and inability to justify the expense of many paving contractors and state and county transportation agencies. to achieve the effect of reducing the bond strength

Inactive Publication Date: 2016-10-13
SHAMROCK M E D LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The use of aminated waxes and hydrogenated vegetable oils in asphalt compositions enhances the flexibility and durability of pavement layers, reducing the need for specialized equipment, improving adhesion, and extending pavement lifespan by allowing for movement under traffic and temperature changes without premature cracking.

Problems solved by technology

Unfortunately, the NOVACHIP bonded friction course system can be prohibitively expensive due to the requirement that the specialized “Spray Paver” machine be used.
In the 2011, each spray paver machine was reported to cost almost $500,000, and many paving contractors and state and county transportation agencies cannot justify the expense.
However, without the use of the NOVACHIP Spray Paver, the thick layer of emulsified polymer modified tack coat used in a bonded friction course system would be very difficult to work with.
The thick layer of emulsion tack coat would have a very slow cure rate, resulting in unacceptable delays and also tracking of the tack coat layer.
Where this occurs, the asphalt compositions often are tracked onto other pavement surfaces causing disruption to the surrounding area.
This tracking also reduces the effectiveness of the tack coat by displacing a portion of the intended volume from the area awaiting a new pavement layer.
Insufficient adhesion between a new layer of pavement and an existing base course, a previously laid pavement layer, or a prepared pavement surface can cause pavement separation and cracking during construction of the structure, as well as subsequent failures and premature deterioration of the pavement structure and / or surface.
Such conditions often require costly repairs, can cause damage to vehicles traveling on the surface and may cause dangerous traffic conditions threatening damage to property and injury to vehicles and passengers.
Referring back to the asphalt compositions, products and methods of the '455 Publication, they utilize low Pen value (i.e. stiffer) asphalts, and these stiffer asphalts when utilized in trackless-type tacks, may perform poorly in thin pavements.
Such hard Pen binders are becoming increasingly difficult to source and further, they are very variable in quality from refinery to refinery as well as crude oil source variations.
Even further, the asphalts of the '455 Publication (as tested in the Example section below) have ductility of zero, meaning absolutely no capability of stretching or movement under traffic loading or weather related expansion and contraction.
Still further, the asphalts of the '455 Publication (as tested in the Example section below) have an elastic recovery of zero, meaning will absolutely not allow the Tack Coat to recover after traffic load had passed or weather related fatigue.
Interestingly, the higher bond strength is not necessarily better since as the bond becomes too rigid and will not move / give way under traffic loading and temperature sweeps (warm to cold eg summer / winter and cold front weather).

Method used

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  • Asphalt compositions comprising hydrogenated and aminated vegetable oil, asphalt products made from such asphalt compositions, and the methods of making and using such compositions and products
  • Asphalt compositions comprising hydrogenated and aminated vegetable oil, asphalt products made from such asphalt compositions, and the methods of making and using such compositions and products
  • Asphalt compositions comprising hydrogenated and aminated vegetable oil, asphalt products made from such asphalt compositions, and the methods of making and using such compositions and products

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0205]Bond Strength Evaluation of DOT™ C10 and DOT™ C12 Tack Coat

[0206]Bond strength testing was conducted for each tack coat sample at two different application rates and substrate conditions. The substrate conditions represented both milled and unmilled surfaces. Three replicates were prepared for each combination, for a total of 24 samples tested.

[0207]General Procedure. A single, 9.5 mm nominal maximum aggregate size (NMAS) Superpave mix developed by Basic Construction Company, LLC, located in Newport News, Va., was used as the surface mix for all samples tested. The mix design contained 35 percent recycled asphalt pavement (RAP), and had an optimum asphalt content of 5.55 percent. For the substrate samples, both milled and unmilled samples were used. The unmilled samples were prepared using a 12.5 mm NMAS Superpave mix designed to meet Alabama Department of Transportation's (ALDOT) 424 Specifications. The optimum asphalt content for the mixture was 4.6 percent. For the DOT™ C10...

example 2

[0225]This example shows the effect of additive on softening point and Pen value of PG 67-22 asphalt binder. Results are shown in Table 4 of FIG. 7.

[0226]As shown by the data, with the additive of the present invention, there is a steep increase in Softening Point without need for blowing. As an improvement of the additive over blowing, there is no oxidative aging of binder as in blowing. Also, use of the additive of the present invention results in less than 10% of batch cycle time compared to blowing. Further, use of the additive of the present invention results in more than 10 times production volume compared to blowing. As an advantage, use of the additive of the present invention may be with standard production equipment. Finally, use of the additive of the present invention results in moderate decrease in Pen value unlike blowing or hard wax additives such as Fischer-Tropsch Waxes.

example 3

[0227]This example shows use of the additive of the present invention in the production of BUR Roofing Grades from standard refinery asphalt streams and demonstrates that blowing is not necessary. The results are shown in Table 5 of FIG. 8.

[0228]As shown, use of the additives of the preset invention makes it possible to use a wider range of refinery asphalt binder streams thus resulting in a more varied supply flexibility. Use of the additives of the present invention, eliminates blowing associated pollution / emissions, energy consumption, long batch cycle times, higher viscosity of binder and formation of carcinogenic components resultant from blowing. Also, use of the additives of the present invention substantially enhance operational safety as the binder may be handled at lower temperatures.

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Abstract

An additive comprising a hydrogenated and aminated vegetable oil, products made thereof including asphalts, asphalt pellets, asphalt paving, roofing materials, adhesives, glues, inks, coatings, sealants, paints, color dispersants, polymers, transfer inks, and other products made thereof, and methods of making and using said compositions and products. Methods of modifying asphalt include contacting asphalt with a hydrogenated and aminated vegetable oil.

Description

RELATED APPLICATION DATA[0001]This application claims priority from and is a continuation in part of U.S. patent Ser. No. 14 / 600,844, filed Jan. 20, 2015, the specification of which is herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to asphalt compositions, to asphalt products made from such asphalt compositions, and to methods of making and using such compositions and products. In another aspect, the present invention relates to asphalt compositions which may be readily applied to surfaces using common equipment and techniques, to asphalt surfaces formed therefrom, and to methods of making and using such compositions and surfaces. In even another aspect, the present invention relates to asphalt compositions using for making thin and ultrathin paving layers, and to method for making and using such compositions and layers. In still another aspect, the present invention relates to asphalt compositions usefu...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C08L95/00E04D1/20E01C7/35E01C7/32
CPCC08L95/00E01C7/32C08L2555/64E01C7/35C08L2555/52E04D1/20C08L91/06E01C11/005Y02A30/30
InventorNAIDOO, TERRYNAIDOO, TAYRN G.
OwnerSHAMROCK M E D LLC