Dowels for jointed concrete and methods of forming and using the same

• US 9,476,165 B2
• Filed: 07/17/2015
• Issued: 10/25/2016
• Est. Priority Date: 07/21/2014
• Status: Active Grant

• Current Assignee: Christopher P. Schenk
• Original Assignee: Christopher P. Schenk
• Inventors: Schenk, Christopher P.
• Primary Examiner(s): Addie, Raymond W
• Application Number:
  US14/802,024
• Publication Number:
  US 20160017548A1
• Time in Patent Office: 466 Days
• Field of Search: 404/17, 404/51, 404/59, 404/62, 404/75
• US Class Current: 1/1
• CPC Class Codes: B21C 37/08 Making tubes with welded or soldered seams with helically arranged seams B21C37/122
• CPC Class Codes: E01C 11/04 for cement concrete paving E01C9/001 takes precedence
• CPC Class Codes: E01C 11/06 Methods of making joints
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045
• CPC Class Codes: E01C 11/20 for prestressed concrete pavings from prefabricated concrete units, similar prestressed units E01C5/10
• CPC Class Codes: E01C 5/003 characterised by material or composition used for beds or joints; characterised by the way of laying
• CPC Class Codes: E01C 7/147 Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering applying thin surface layers with other binder E01C7/35; repairing pavings in general E01C11/005; roughening by means of tools E01C11/24
• CPC Class Codes: E04B 1/483 Shear dowels to be embedded in concrete

Abstract

Jointed concrete pavement is formed of concrete cured around a dowel. The dowel includes a welded seam carbon steel hollow tube and a pair of end caps. The end caps are attached to opposite axial ends of the hollow tube. The pavement comprises a fracture groove over the dowel.

Claims

1. A method of forming jointed concrete pavement, the method comprising:

positioning a dowel in a location that will become concrete pavement, the dowel consisting of a carbon steel welded seam hollow tube, the end caps each comprising an opening, a fluid passageway extending through the openings of the endcaps and the carbon steel welded seam hollow tube and a pair of end caps, the end caps being attached to opposite axial ends of the hollow tube;

allowing concrete to cure around the dowel to thereby transform the concrete into pavement;

cutting a top surface of the pavement over the dowel.

2. A method in accordance with claim 1 wherein the dowel is positioned in a location that will become concrete pavement while the concrete is curing.

3. A method in accordance with claim 1 wherein the end caps are formed of a polymeric material.

4. A method in accordance with claim 3 wherein the end caps each comprise a slit and a fluid passageway extends through the slits of the endcaps and the carbon steel welded seam hollow tube.

5. Jointed concrete pavement comprising concrete cured around a dowel, the dowel consisting of a welded seam carbon steel hollow tube and a pair of end caps, the end caps being attached to opposite axial ends of the hollow tube, the end caps each comprising an opening such that a fluid passageway extends through the openings of the endcaps and the carbon steel welded seam hollow tube, the pavement comprising a fracture groove over the dowel.

6. Jointed concrete pavement in accordance with claim 5 wherein the end caps are formed of a polymeric material.

7. Jointed concrete pavement in accordance with claim 6 wherein the end caps each comprise a slit and a fluid passageway extends through the slits of the endcaps and the carbon steel welded seam hollow tube.

8. A method of forming jointed concrete pavement, the method comprising:

drilling a plurality of generally horizontal holes in a generally vertical face of cured concrete, the holes each have a generally cylindrical surface;

inserting a dowel tube into each of the plurality of holes in a manner such that a portion of each of the dowel tubes extends outward from the vertical face of the cured concrete, each dowel tube having an axial passageway extending therethrough, opposite axial ends, and a cylindrical outer surface;

pumping grout through the axial passageway of each dowel tube in a manner causing the pumped grout to at least partially fill space between the generally cylindrical surface of the holes and the cylindrical outer surfaces of the dowel tubes; and

pouring concrete over the portion of the dowel tubes that extend outward from the vertical face of the cured concrete after performing the above steps.

9. A method in accordance with claim 8 wherein at least one end cap is attached to each dowel tube on the axial ends of the dowel tubes that are within the holes, each of the end caps comprises an opening, the pumped concrete is pumped through the opening of each end cap, and the end caps direct the pumped concrete between the generally cylindrical surface of the holes and the cylindrical outer surfaces of the dowel tubes while restricting the pumped concrete from filling the axial passageways of the dowel tubes.

10. A method in accordance with claim 9 wherein each opening of each of the end caps is at least one slit.

11. A method in accordance with claim 9 wherein the end caps are insert caps that partially extend into the axial passageways of the dowel tubes and that have an outer most diameter that is less than or equal to the diameter of the cylindrical outer surfaces of the dowel tubes and that is greater than the diameter of the axial passageways of the dowel tubes.