J shaped anchor bolt installation method and common problems and solutions

1. Pre-embedded method (suitable for new concrete)

Steps:

Draw the position: mark the place where the bolt should be placed on the steel bar according to the design drawing, and fix it with a template.

Insert the bolt: Before pouring concrete, insert the J-shaped bolt to ensure that it is vertical and not crooked.

Pour concrete: Pour concrete and vibrate it to make it dense, and don’t let the bolt be distorted.

Wait for hardening: Remove the template after the concrete is completely dry and check whether the bolt position is correct.

Applicable scenarios: new factory buildings, equipment foundations, steel structure columns, etc.

2. Post-anchoring method (suitable for hardened concrete)

Steps:

Drilling: Use an impact drill to drill holes in the concrete (the holes should be thicker than the bolts).

Cleaning dust: Use air blower or brush to clean the dust in the hole.

Glue filling: Squeeze special anchoring glue (similar to “super glue”) into the hole.

Plug the bolts: Turn the J-bolts and insert them to fill the gaps with glue.

Wait for curing: Let it dry for 24 hours, and wait for the glue to harden completely before use.

 Applicable scenarios: reinforce equipment on old concrete, add railings, etc.

Common problems & solutions

Bolts are loose Buried too shallowly or the concrete is not hard enough

Deepen the burial or reinforce with glue

Bolts are rusted Poor anti-rust treatment (such as ordinary iron bolts)

Replace with stainless steel or galvanized bolts

Position is crooked It was crooked when pouring concrete

Fix it with a positioning template, or expand the hole later

Can’t pull J-hook is too short and can’t bear the force

Replace with a bolt with a longer hook