Best site practices for epoxy coated reinforcing steel

Unloading

unloading coated bar

Use spreader bar or strong back with

multiple pick-up points to minimize sags.

 For lifting, use nylon or padded slings; not

bare chains or cables.

 Storage

storage of coated bar

Unload as close as possible to the point of

Concrete placement to minimize rehandling.

Store coated and uncoated steel separately.

 Store bundles on suitable materials, such as

timber cribbing.

 Space timber cribbing to minimize sagging.

 Use nylon strapping or other non-abrasive

material.

covered bar

 If outdoor storage is to exceed 30 days, cover

coated bars with suitable opaque material and

minimize condensation

Shearing & Bending

bending

 Contact points on shearing and bending

equipment to be a suitable protective material.

 Inspect bars after bending and repair any

Cracks with patching material.

Cutting 

Power shears or chop saw (avoid flame cutting).

cutting

Repair cut ends.

Welding

 1.  Remove coating from the areas to be welded.

2.   Cleaned it with brush, remove any dust particles
3.   Weld properly prepared area
-reinforcing steel should be welded according to the American Welding Society,

AWS D1.4/D1.4M Structural Welding Code – Reinforcing Steel.
-While in situ welding of epoxy coated bars adequate ventilation to dissipate fumes must be provided
-Tack welding is not permitted.
4.   Clean all carbon deposits & slag from weld and HAZ
5.   Apply patch up  as usual practice.
– the damaged areas should be repaired using patch materials meeting ASTM  A775/A775M.

Patch up Material 

Use 2-part patching material, approved

by the coating manufacturer.

 Follow manufacturer instructions.

Repair of damaged epoxy coating, cut ends,

cracks and abrasions

step 1

Step 1.

Remove rust and contaminants from the

damaged area to be patched with a wire

brush

step 2

step 2       

Mix the patching material according to the

manufacturer’s instructions. Use patching

material prior to end of pot life.

step 3

Step 3.          

Apply the patching material to the repaired

area. Follow the patch material manufacturer’s

instructions.

step 4

 Step 4.

Allow the repaired area sufficient curing time,

as specified by the manufacturer’s instructionsbefore placing concrete.

Bar Placement

bar placing

Lift and set the steel into place without dragging.

Use plastic or bar supports coated with non-conductive material.

Use pvc coated tie wire.

Use power shears or chop saw to cut steel and not flame cutting.

Concrete Operations

concrete opration

Minimize traffic over the steel.

Avoid traffic and concrete hoses on placed steel.

Use plastic headed vibrators to consolidate concrete.

2 thoughts to “Best site practices for epoxy coated reinforcing steel”

  1. Congratulations!!To the author of this blog,!!👍👌💐
    This is a very informative article, blog, inspite of some technical words, the language is having an ease of understanding, even to a lay man like me, the pictorial representation and it’s description instruction is just fantastic, particularly useful to industry where patch work and repairs due to extreme wear and tear is unavoidable, it serves as an advisory true to the adage, ” a stitch in time saves nine”, overall I am impressed with the style of writing which is not only simple, but the choice of words, (though some of them technical) appeals to professionals as well as others, it actually, kindles and evinces more interest into the subject, kudos!! Would love to read more such blogs!!

    1. Thank you Sanjay, India is building infrastructure at this stage, rebars are like lifeline to the RCC structures so use of right technology will give us durable and safe infrastructure for time to come.

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