STANDARD: UNI 10766
Extract a micro-core samples from a rock is an extremely valid
non-destructive method, as it allows analysis and accurate evaluations
(compression resistance, ecc.) without causing any damages,
considering the dimension of the hole that can be eventually
clogged with mortar.
Micro-coring system is ulteriorly valid and reliable if combined with
ultrasonic tester and concrete hammer.
Micro-core extraction is easy, correct and requires the presence of
one operator only.
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
surface
Set of accessories comprising: anchors, bits, wrenches and screws.
Carrying case.
Dimensions: 550x400x200 mm approx
Weight: 10 kg approx

ACCESSORIES
C377-01 WATER TANK WITH FOOT
PUMP, that leaves the hands of
the operators free for coring
AS ALTERNATIVE:
C377-02 AIR-WATER PRESSURE TANK,
10 litres capacity

C377-05
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
correct results.
The equipment is made of stainless steel and aluminum and it is
supplied complete with diamond blade diameter 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
mod. C377-01.

The maximum values expected for compression tests on micro-cores
are usually lower than 60 kN. Portable compression machine mod.
C094 (see p. 323), or a cement compression tester (see p. 422) may
be conveniently used.
Trimming of cores may be even obtained with the grinding machine
mod. C298 + device mod. C300-08 (see p. 65)

SPARES
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