RoadstaBInnovative technologies from Russia

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Presented by: Nikhil Sharma

R-BarAn Alternative Technology of Reinforcement

R-BarGlass fiber reinforced polymer (GFRP) materials have emerged as an alternative material for producing reinforcing bars for concrete structures. GFRP reinforcing bars offer advantages over steel reinforcement due to their noncorrosive nature and nonconductive behavior. Due to other differences in the physical and mechanical behavior of GFRP materials as opposed to steel.

Advantages

• Non corrosive• 7 times lighter than steel• 3 times higher tensile strength than steel• Easy to cut• Easy to transport and handle • Non conductor of heat and electricity• Lesser dead weight of structure• Chemical resistant

Restrictions

• Bent Bars & StirrupsMost industry standard bent shapes are available in R-Bar with some exceptions as noted herewith. Standard shape codes are used.All bends must be made at the factory. Field bending of FRP bars is not possible. This is because the bent bars must be formed in the factory while the thermo-set resin is uncured. Once the resin is cured, the process cannot be reversed. We advise that you work closely with the factory to implement the most economical detailing of

Availability of guidelines and recommendations

Corrosion of internal reinforcing steel is one of the chief causes of failure of concrete structures. Inevitably concrete will crack, creating a direct avenue for chlorides to begin oxidizing the steel rebar. Fiber Reinforced Polymers (FRP’s) are a proven and successful alternative reinforcing that will give structures a longer service life. A complete spectrum of authoritative consensus design guides, test methods, material and construction standards, and qualification procedures are available for different types of structures.

Codes Internationally• AASHTO LRFD Bridge Design Guide Specifications for GFRP-Reinforced

Concrete Bridge Decks and Traffic Railings, First Edition.– Published in November 2009, this document offers authoritative design guidance

to the bridge design community in safely adopting FRP bars in bridge decks and railings.

• CSA S-806 – Canadian Code– “Design and Construction of Building Components withFibre-Reinforced Polymers”.

• CSA S-6 Canadian Highway Bridge Design Code– Widespread adoption of GFRP bars in Canadian bridge structures is being made

possible by this important document.• ACI 440.1R “Guide for the Design and Construction of Structural Concrete

Reinforced with FRP Bars”– The American Concrete Institute 440 guide is a mature and living document that as

undergone a number of revisions since its first publication in 2001. Companion documents to the 440.1R design guide include the ACI 440.3R “Guide Test Methods for FRP’s for Reinforcing or Strengthening Concrete Structures” which is intended as an interim document superseded by new ASTM test methods as they become available.

International Studies

• FIB Task Group 9.3 – bulletin 40 “FRP Reinforcement in RC Structures”– In Europe, the Federation Internationale du Beton FIB Task

Group 9.3 has published a technical report "Bulletin 40", which is a "state of the art" of FRP reinforcement in RC structures. Work is under way on provisions for FRPbars in EuroCode 2 format. Norway and Italy have published internal design codes for the use of FRP bars.

• 4th Structural Specialty Conference of the Canadian Society for Civil engineering Montréal. 2002– Field application of FRP composite bars as reinforcement for

bridges and decks.

Implemented Projects

• Emma Park Bridge - US• Texas High Speed Tolling bridge - US• Paper Wotton Bridge – UK• West Virginia – Highway• Miami Metro Rail• Dubai Metro Rail• Nakheel’s Palm Cove Canal in Dubai waterfront.• Baker Hughes Building in Dubai

Utah DOT – Emma Park Bridge Precast Deck Panels

Utah DOT – Emma Park Bridge Precast Deck Panels

Texas DOT – High Speed Tolling – Tie Bars

West Virginia – CRCP Paving

Miami Metrorail – Concrete Plinths for electrical isolation

Miami Metrorail – Deck Bars for electrical isolation in Segmental Precast

R-Bar Sizes and transportationSize Packaging

4mm Roll

6 mm Roll

8mm Roll

10mm Roll

12mm Roll

14mm Length

16mm Length

18mm Length

20mm Length

22mm Length

24mm Length

26mm Length

R-Bar

We thank you for your valuable time and consideration.

RoadstaB Team

Add: Chetak House Old - Delhi Gurgaon Road

Near CNG filling Station Kapashera, Delhi 110 037

Ph: +91 9896883663

E.mail: nikhil@roadstab.com .