Anchoring of steel rebars in concrete

Project overview

26 floors on the ground and 3 floors in the basement. The reinforced concrete frame shear wall structure with an absolute elevation of 17.30 meters. Due to the tight construction period and complex construction conditions, design modifications or modifications often occur during the construction process, and later anchoring of steel rebar is needed.

Material requirements

1, reinforcement selection requirements: HRB335 level fy=300N/mm2, HRB400 grade fy=360N/mm2 reinforcement bars should be ribbed bars.

2.HM-500 modified epoxy injection type rebar adhesive

Construction process

1.Drill hole to the diameter and depth required. The diameter must be in accordance with anchor size.

2.The drill hole must be cleaned with air blower, starting from the bottom of the hole.The drill hole mustbe thoroughly cleaned with steel brush. After brush, to use air blower to clean the drill hole again.

3.Inject resin anchor resin into the hole, starting from the bottom, while slowly drawing back the static mixer. In any case avoid entrapping air. For deep holes extension tubing can be used.

4.Insert the anchor with a rotary motion into the filled drill hole. Some adhesive must come out of the hole.

5.During the resin hardening time the anchor must not be moved or loaded.