ACI Adhesive Anchor Inspector flashcards

33 cards. Read the term and the definition here. The deck at the top of this page is optional.

Effective embedment depth

The distance from the concrete surface to the deepest point of the adhesive bond around the anchor, measured after installation and compared to the specified value.

Hole cleaning brush diameter

The brush must contact the full hole wall and be sized to the drilled diameter; an undersized or worn brush leaves dust that reduces bond strength.

Blow-out cycle

A cleaning step using oil-free compressed air or a hand pump to expel dust from the drilled hole; the required count is specified in the printed instructions.

Squeeze-out at collar

Adhesive visible around the anchor at the concrete surface after insertion, indicating the hole was filled from the bottom and is free of voids.

Base material temperature

The temperature of the concrete itself, which controls cure time and permissible installation conditions in the manufacturer's published tables.

Minimum edge distance

The smallest permitted distance from the anchor centerline to the nearest concrete edge; anchors set closer require engineering approval due to breakout risk.

Minimum anchor spacing

The smallest center-to-center distance between adjacent anchors, set to prevent overlapping stress cones and to allow proper hole cleaning during installation.

Adhesive expiration date

The manufacturer's shelf-life limit printed on the cartridge; expired adhesive may not cure properly and is not permitted for structural installations.

Mixing nozzle inspection

Verification that the correct nozzle type and length are used and that dispensed adhesive shows uniform color before the first anchor is set.

Proof load test

A specified tensile load applied to a sample of installed anchors after full cure to confirm installation quality without loading to failure.

Torque verification

Application of the manufacturer's installation torque to the nut after cure, confirming the anchor is set and the adhesive has developed adequate strength.

Inspection record content

Documentation of hole size and depth, cleaning method, adhesive lot and date, temperatures, cure time, and torque values for each installed anchor.

Cored hole qualification

Core drilling produces smoother walls than rotary hammer drilling and is allowed only when the adhesive system's qualification testing includes cored holes.

Hammer-drill bit type

The carbide-tipped bit specified by the adhesive manufacturer; the correct diameter and tip geometry produce the roughness the adhesive is qualified for.

Hole depth gauge

A marked rod or tape used to confirm the drilled hole reaches the specified embedment plus any allowance required by the adhesive system.

Wet hole condition

Standing or flowing water in the drilled hole; only moisture-tolerant adhesive systems may be used, and the hole must still be cleaned per instructions.

Drilling method record

The documented drilling technique (hammer drill or core drill) and bit size, since capacity values depend on the method used during qualification.

Adhesive gel time

The working time after mixing during which the anchor can be inserted and adjusted; it shortens as base-material temperature rises.

Full cure time

The period the installed anchor must remain undisturbed before loading or torqueing, determined from the manufacturer's table for the concrete temperature.

Brush and blow sequence

The ordered cleaning steps of brushing and blowing the hole; the sequence and counts are printed on the adhesive instructions and must be followed exactly.

Oil-free compressed air

Air used for hole cleaning that contains no lubricant; oil contamination coats the hole wall and prevents the adhesive from bonding to the concrete.

Discard initial dispense

Adhesive extruded and thrown away until the color is uniform, ensuring the mixing nozzle is fully primed before filling the first hole.

Uniform adhesive color

A consistent color in the dispensed bead confirming complete mixing of resin and hardener; streaks indicate a failed or incorrect mixing nozzle.

Bottom-up filling

Injecting adhesive starting at the back of the hole and withdrawing the nozzle as the hole fills, preventing trapped air pockets in the bond line.

Capsule anchor system

A glass capsule containing resin and hardener that is ruptured by the spinning threaded rod, used for overhead and horizontal installations to retain adhesive.

Installation torque

The manufacturer's specified torque applied to the nut after cure; exceeding it can crack concrete or cause the anchor to spin in the hole.

Frozen concrete prohibition

Anchors are not installed in concrete containing ice; freezing disrupts adhesive cure and the bond between adhesive and the hole wall.

Embedment measurement point

Embedment is measured from the concrete surface to the embedded end of the rod, excluding any portion passing through the fixture plate.

Threaded rod preparation

The embedded end is cut square and cleaned of oil, rust, or coating per the manufacturer's requirement before insertion into the adhesive.

Fixture clearance hole

The hole in the attached member must be sized so the anchor does not bear on the fixture before the nut is tightened to the specified torque.

Disturbance prohibition

No movement, loading, or torqueing of the anchor is permitted during cure; disturbance before full cure reduces the achieved bond strength.

Cold-weather adhesive

A formulation qualified for installation at base-material temperatures below the standard limit; the cure schedule for the actual temperature still applies.

Nozzle replacement interval

The number of anchors or elapsed time after which the mixing nozzle must be replaced, as stated by the manufacturer to avoid partially cured adhesive.