STANDARD: UNI 10766
The extraction of a micro-core sample from a concrete structure or
masonry is an extremely valid non-destructive method, as it allows
analysis and accurate evaluations of the manufacture (compression
resistance, ecc.) without causing any damages to the structure,
considering the dimension of the hole that can be eventually
clogged with mortar.
Micro-coring system is additionally valid and reliable if combined
with ultrasonic tester and concrete hammer.
Micro-core extraction is easy and requires the presence of one
The equipment comprises:
– Suitable electric drill. 230V 1F 50Hz
– Flanged guide assembly
– Drilling mask
– Impregnated diamond bit for cores with Ø 28×100 mm
– Impregnated diamond bit for cores with Ø 28×200 mm
– 2 Self-blocking pincers to fit the flanged guide assembly to the
Set of accessories including: anchors, bits, wrenches, screws.
Dimensions: 550x400x200 mm approx.
Weight: 10 kg approx.
TRIMMING/CUT-OFF MACHINE FOR CORES
Suitable to cut and trim cores to be prepared for compression tests,
where the flatness of both surfaces is a basic condition to obtain
The equipment is made of stainless steel and aluminum and is
supplied complete with diamond blade Ø 180 mm.
For this purpose it must be used the drill mod. C377-10 (enclosed
into micro-coring equipment) and the water tank with foot pump
The maximum values foreseen for compression tests on micro-cores
are usually lower than 60 kN. Portable compression machine mod.
C094N (see p. 323), or a cement compression tester (see p. 418)
may be conveniently used.
Trimming of cores may be even obtained with the grinding machine
mod. C299 + device mod. C300-08 (see p. 352)
C377-10 ELECTRIC DRILL, suitable for the microcoring purposes.
C377-15 DIAMOND BIT, Ø 28×100 mm
C377-16 DIAMOND BIT, Ø 28×200 mm
C377-01 WATER TANK WITH FOOT PUMP, that leaves the hands of
the operators free for coring
C377-02 AIR-WATER PRESSURE TANK, 10 liters capacity