Glass fiber-reinforced hot-mix asphalt mixture, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9944797-B2
Application number	US-201415312223-A
Country	US
Kind code	B2
Filing date	Aug 11, 2014
Priority date	May 27, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

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.

First claim

What is claimed is:

1. A glass fiber composite reinforcing material comprising:
a pellet-shaped scrap reinforcing material ( 1 ) in which glass fiber scrap made by pulverizing glass fiber is coated with an outer covering material; and
a rod-shaped fiber reinforcing material ( 2 ) in which a glass fiber bundle having a plurality of glass fiber strands is coated with a resin material,
wherein the outer covering material of the pellet-shaped scrap reinforcing material ( 1 ) is an asphalt binder.

2. The glass fiber composite reinforcing material according to claim 1 , wherein the resin material of the rod-shaped fiber reinforcing material ( 2 ) is polypropylene.

3. The glass fiber composite reinforcing material according to claim 1 , wherein the rod-shaped fiber reinforcing material ( 2 ) has a length of 10 to 20 mm.

4. The glass fiber composite reinforcing material according to claim 1 , further comprising:
a resin reinforcing material ( 3 ) in the form of a grain composed of a polypropylene resin.

5. A hot-mix asphalt mixture,
wherein the hot-mix asphalt mixture is made by mixing a glass fiber composite reinforcing material, aggregates, and an asphalt binder,
wherein the glass fiber composite reinforcing material comprises:
a pellet-shaped scrap reinforcing material ( 1 ) in which glass fiber scrap made by pulverizing glass fiber is coated with an outer covering material; and
a rod-shaped fiber reinforcing material ( 2 ) in which a glass fiber bundle having a plurality of glass fiber strands is coated with a resin material,
wherein, among the glass fiber composite reinforcing material, the pellet-shaped scrap reinforcing material ( 1 ) is mixed in an amount of 1 to 2 wt % based on a total weight of the hot-mix asphalt mixture, and the rod-shaped fiber reinforcing material ( 2 ) is mixed in an amount of 1 to 2 wt % based on a total weight of the hot-mix asphalt mixture.

Assignees

• Korea Inst Civil Eng & Building Tech

Inventors

• Yoo Pyeongjun
• Kim Booil
• Yun Taeyoung
• Ohm Byungsik
• Choi Jiyoung
• Baek Jongeun
• Kim Taewoo
• Ham Sangmin

Classifications

• E01C7/26

  mixed with other materials, e.g. cement, rubber, leather, fibre {(fibrous material reinforcements for bituminous paving E01C11/165)} · CPC title

• C03C25/24

  Coatings containing organic materials · CPC title

• C08L2555/86

  Polymers containing aliphatic hydrocarbons only, e.g. polyethylene, polypropylene or ethylene-propylene-diene copolymers · CPC title

• C03C25/30

  Polyolefins · CPC title

• C08L2555/50

  Inorganic non-macromolecular ingredients · CPC title