Application of high toughness, low viscosity nano-molecular resin for reinforcing pothole patching materials in asphalt and concrete base pavement

Patent metadata

Field	Value
Publication number	US-9328024-B2
Application number	US-201113096750-A
Country	US
Kind code	B2
Filing date	Apr 28, 2011
Priority date	Apr 29, 2010
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

Described herein are methods of improving the durability of concrete by the infusion of the concrete with a low-viscosity oligomeric solution, and subsequent curing of the oligomeric solution to form a high toughness polymer. Also described herein are compositions containing concrete and high toughness polymers, and formed articles made from concrete and high toughness polymers. The methods and compositions are useful for improving the durability of concrete roads and structures, as well as the durability of repairs to concrete roads.

First claim

What is claimed is:

1. A method of repairing an asphalt concrete road pavement, comprising:
1) filling a pothole of the asphalt concrete road pavement with asphalt concrete comprising a mixture of asphalt and aggregates;
2) compacting the asphalt concrete comprising the mixture of asphalt and aggregates in the pothole of the asphalt concrete road pavement;
3) infusing the asphalt concrete comprising the mixture of asphalt and aggregates with an oligomeric solution comprising:
a mixture of dimers and trimers of a cyclic olefin;
wherein the oligomeric solution:
(i) has a viscosity of no greater than 20 cps; and
(ii) cures in less than 10 minutes; and

4) forming a thermoset polymer from the oligomeric solution,
wherein the thermoset polymer has:
(i) a toughness of greater than 6.0 ft-lbs/in as measured by Notched Izod Impact ASTM D256; and
wherein the asphalt concrete comprising the mixture of asphalt and aggregates is approximately flush with a road surface of the asphalt concrete road pavement; and
wherein infusing the asphalt concrete comprising the mixture of asphalt and aggregates with the oligomeric solution is carried out subsequent to compacting the asphalt concrete comprising the mixture of asphalt and aggregates.

2. The method of claim 1 , wherein the cyclic olefin is cyclopentadiene.

3. The method of claim 1 , wherein the oligomeric solution comprises a ring opening metathesis polymerization catalyst.

4. The method of claim 3 , wherein the ring opening metathesis polymerization catalyst is a Grubbs catalyst.

5. The method of claim 1 , wherein the thermoset polymer is formed by ring opening metathesis polymerization, and the thermoset polymer comprises polydicyclopentadiene.

6. The method of claim 1 , wherein infusing the asphalt concrete comprising the mixture of asphalt and aggregates with the oligomeric solution comprises infusing the oligomeric solution through an entire thickness of the asphalt concrete comprising the mixture of asphalt and aggregates.

7. The method of claim 1 , wherein infusing the asphalt concrete comprising the mixture of asphalt and aggregates with the oligomeric solution comprises infusing an edge of the asphalt concrete comprising the mixture of asphalt and aggregates with the oligomeric solution, such that the thermoset polymer seals the edge against infusion of water and bonds the asphalt concrete comprising the mixture of asphalt and aggregates to the asphalt concrete road pavement.

8. The method of claim 1 , wherein forming the thermoset polymer comprises forming a network of the thermoset polymer extending through interconnected voids among the aggregates.

9. The method of claim 1 , wherein the thermoset polymer is formed by ring opening metathesis polymerization, and the thermoset polymer has a polydispersity in a range of 1.03 to 1.10.

Assignees

• Kao Wei H
• Carlson Larry
• Yang Jenn-Ming
• Ju Jiann-Wen Woody
• Univ California

Inventors

• Kao Wei H
• Carlson Larry
• Yang Jenn-Ming
• Ju Jiann-Wen Woody

Classifications

• C04B41/4861

  Polyalkenes · CPC title

• C04B28/04 Primary

  Portland cements · CPC title

• C04B14/28

  of calcium · CPC title

• Y02W30/94

  Cross-Sectional Technologies · mapped topic

• C04B41/4857

  Other macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title