MULTI-LEG FIBER REINFORCED CONCRETE

• US 20200131770A1
• Filed: 12/11/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Abandoned Application

• Current Assignee: King SAUD University
• Original Assignee: King SAUD University
• Inventors: ALMUSALLAM, TAREK H., ABBAS, HUSAIN, AL-SALLOUM, YOUSEF A., ABADEL, AREF A.
• Application Number:
  US16/710,982
• Publication Number:
  US 20200131770A1
• Time in Patent Office: Days
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 14/48 Metal
• CPC Class Codes: C04B 20/0008 Materials specified by a shape not covered by C04B20/0016 - C04B20/0056, e.g. nanotubes
• CPC Class Codes: C04B 20/0048 Fibrous materials
• CPC Class Codes: C04B 20/0068 Composite fibres, e.g. fibres with a core and sheath of different material
• CPC Class Codes: C04B 20/0076 characterised by the grain distribution
• CPC Class Codes: C04B 2103/32 Superplasticisers
• CPC Class Codes: C04B 2111/34 Non-shrinking or non-cracking materials
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: E04B 2103/02 of ceramics, concrete or other stone-like material
• CPC Class Codes: E04C 5/012 Discrete reinforcing elements, e.g. fibres
• CPC Class Codes: E04C 5/073 Discrete reinforcing elements, e.g. fibres

Abstract

The multi-leg fiber reinforced concrete is concrete in which fibers have been embedded to prevent the concrete from being fractured due to cracks developing therein. Each fiber has multiple legs, defining two and three dimensional structures. At least one fiber is embedded in a volume of concrete, where the at least one fiber has at least first and second legs respectively extending along first and second directions. The first and second directions are angularly oriented with respect to one another between 45° and 135°, with each of the first and second legs having a free end and a fixed end. Each free end has a substantially Z-shaped contour. The fixed ends of the first and second legs may be joined together to define a two-dimensional fiber structure. The at least one fiber may be partially coated with a polymeric material, such as polypropylene.

Claims

1. A multi-leg fiber reinforced concrete, comprising:

a volume of concrete; and

at least one elongated fiber embedded in the volume of concrete, wherein said the at least one fiber having opposing ends, each of the opposing ends of the at least one fiber defining a hook, the at least one fiber having a central portion extending between the hooked ends, the central portion having a plurality of consecutive legs, each of the legs and the next consecutive leg in the central portion defining an angle measuring between 45° and

135°

, the plurality of consecutive legs consisting of six legs disposed in the central portion, the six legs including first through sixth legs joined together directly in consecutive order in the central portion of the fiber, each of the legs defining an angle measuring between 45° and

135°

with the next consecutive leg.

5. The multi-leg fiber reinforced concrete as recited in claim 1, wherein the at least one fiber comprises braided fiber.

16. The multi-leg fiber reinforced concrete according to claim 1, wherein the hook defined by each of the opposing ends of said at least one fiber includes a 45°

bend.

2-4. -4. (canceled)

6-15. -15. (canceled)