Dust is a release agent
Drilling concrete leaves a fine dust clinging to the hole wall. If resin is injected over that dust, it does not bond to the concrete: it bonds to the dust, and the dust is attached to nothing.
Manufacturer testing shows very large capacity losses from poor cleaning. That is why the procedure calls for blowing, brushing with a wire brush of the correct diameter and blowing again, as many times as the data sheet states. It is not paperwork: it is half the anchor's capacity.
Embedment comes from the calculation, not from what was left over
Embedded length governs bond capacity. Trimming two or three centimetres because the bar came short, or because the hole was drilled shallower to save time, cuts the allowable load directly.
And there is a second effect: with short embedment the failure mode can shift from bar pull-out to a concrete cone, which is brittle and gives no warning.
Cure depends on substrate temperature
Not on air temperature, and not on the temperature of the cartridge: on the concrete's. In Tijuana, an exterior wall on a January morning can be considerably colder than the air, and cure time stretches accordingly.
Loading early leaves the anchor with an undetermined capacity nobody verified. If the schedule is tight, the answer is to specify a fast-cure resin from the start, not to shorten the wait.
When to require pull-out testing
On anchors for critical elements, when concrete quality is doubtful, when a third party installed them without records, and whenever the supervisor asks. It is a cheap test next to the consequence of a base plate letting go with the machine mounted on it.
