TRANSFORMED CONTINUOUSLY REINFORCED CONCRETE PAVEMENT STRUCTURE USING SHORT REINFORCING BAR AND CRACK INDUCTION

• US 20170002524A1
• Filed: 06/29/2016
• Published: 01/05/2017
• Est. Priority Date: 07/01/2015
• Status: Active Grant

• Current Assignee: Dagil E&C, University-Industry Cooperation Group of KyungHee University
• Original Assignee: Dagil E&C, University-Industry Cooperation Group of KyungHee University
• Inventors: CHO, Young Kyo, KIM, Seong Min, LEE, Jun Ho
• Granted Patent: US 9,938,671 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E01C 11/04 for cement concrete paving E01C9/001 takes precedence
• CPC Class Codes: E01C 11/18 for cement concrete pavings prefabricated reinforced units E01C5/08

Abstract

The present invention relates to a transformed continuously reinforced concrete pavement structure using a short reinforcing bar and crack induction, the structure including: a crack induction part combined with short reinforcing bars spaced apart from each other, the short reinforcing bars replacing a predetermined number of continuous reinforcing bars in a concrete pavement layer of a continuously reinforced concrete pavement (CRCP) structure.

Claims

1. A transformed continuously reinforced concrete pavement structure using a short reinforcing bar and crack induction, the structure comprising:

a crack induction part combined with short reinforcing bars arranged to be spaced apart from each other, the short reinforcing bars replacing a predetermined number of continuous reinforcing bars in a concrete pavement layer of a continuously reinforced concrete pavement (CRCP) structure.

2. The structure of claim 1, wherein the crack induction part is embedded in the concrete pavement layer in a direction orthogonal thereto, the crack induction part including an anti-attaching treatment layer on at least one surface thereof.

3. The structure of claim 2, wherein the crack induction part is made of concrete, and is configured to have a triangular cross-sectional shape at an upper part thereof so as to form an inclined surface on one surface of the upper part, and to have a rectangular cross-sectional shape at a lower part thereof, the crack induction part including the anti-attaching treatment layer formed on a surface opposite to the inclined surface.

4. The structure of claim 3, wherein the anti-attaching treatment layer becomes oleophilic by applying a hydrophobic surfactant to the anti-attaching treatment layer.

5. The structure of claim 1, wherein the crack induction part is a cut groove formed on an upper surface of the concrete pavement layer.

6. The structure of claim 2, wherein the crack induction part is a membrane having a shape of a sheet provided in the concrete pavement layer.

7. The structure of claim 2, wherein in a lower part of the crack induction part, support frames are provided beneath opposite ends of a pair of transverse reinforcing bars, the short reinforcing bars are provided on the transverse reinforcing bars provided on the support frames so as to be orthogonal to the transverse reinforcing bars, and the continuous reinforcing bar is arranged between the short reinforcing bars.

8. The structure of claim 3, wherein in the crack induction part, the short reinforcing bar is embedded in the lower part of the crack induction part so as to be exposed to an outside of the lower part at opposite ends of the short reinforcing bar, a transverse reinforcing bar is embedded in the lower part of the crack induction part so as to be orthogonal to the short reinforcing bar, an opening is formed between portions in which the short reinforcing bars are embedded so as to expose the transverse reinforcing bar, and the continuous reinforcing bar is arranged in the opening so as to be supported by the transverse reinforcing bar.

9. The structure of claim 8, wherein the short reinforcing bar includes downward bent parts at the opposite ends thereof, the downward bent parts including an assistant transverse reinforcing bar therebetween, wherein the continuous reinforcing bar is supported both by the transverse reinforcing bar and by the assistant transverse reinforcing bar.

10. A manufacturing method of a transformed continuously reinforced concrete pavement structure using a short reinforcing bar and crack induction, the manufacturing method comprising:

combining a crack induction part with short reinforcing bars arranged to be spaced apart from each other; and

configuring the short reinforcing bars to replace a predetermined number of continuous reinforcing bars in a concrete pavement layer of a continuously reinforced concrete pavement (CRCP) structure.