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TESTING FRESH SELF COMPACTING CONCRETE (S C C) ERMCO/EFNARC European Guidelines.

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FREE FLOW AND TIME FLOW DETERMINATION

SPRAY-TEST
STANDARD: EN 12350-8
To evaluate the deformability of fresh concrete through free flow,
and the time needed to spread a 500 mm diameter.
Applicable to concrete with aggregates of 25 mm max. size
C181 SLUMP CONE, galvanized steel, to EN 12350-2 Spec.
C170-01 PLATE, galvanized steel made, dimensions 900×900 mm,
with engraved two circles having 210 and 500 mm diameter
and central X cross.
FLOW TIME DETERMINATION V-FUNNEL TEST
STANDARD: EN 12350-9
To evaluate the segregation resistance of self-compacting freshly
mixed concrete through the flowing speed from a funnel.
Applicable to concrete with aggregates of 25 mm max. size.
C171 V-FUNNEL, stainless steel made, stand mounted. The
upper edge of the funnel is smooth and reinforced, and
the outflow orifice is equipped of an openable seal valve.
Dimensions: 640x340x1050 mm
Weight : 20 kg approx.
C171-11 FILLING HOPPER stainless steel made, to pour the
concrete into the funnel in one operation, as specified by
the Standard.
V127 BOX, polythene made, to collect the concrete.
C262 STRAIGHT EDGE, 460 mm, to level the concrete.

CONFINED FLOWABILITY DETERMINATION
L-SHAPE BOX
STANDARD: EN 12350-10
To determine the confined flowability of self-compacting freshly
mixed concrete, and to evaluate the filling and passing ability and
segregation resistance.
Applicable to concrete with aggregates of 25 mm max. size.
C172 L-BOX, stainless steel made, consisting of:
– container with inside rigid surfaces,
– obstacle of two different interchangeable set of grids:
– one set of 3 vertical bars having Ø 12 mm and free
light of 41 mm
– one set of 2 vertical bars having Ø 12 mm and free
light of 59 mm
– gate in guillotine form
Dimensions: 712x280x682 mm
Weight: 40 kg approx.
S200-11 STRAIGHT EDGE, 300 mm long, galvanized steel, to level
the concrete.

CONFINED FLOWABILITY DETERMINATION
U-SHAPE BOX
STANDARDS: UNI 11044 | RILEM report N. 23
To evaluate the filling speed and height of the concrete sample
under its own self-weight, in the U-shape filling box, to determine
the self-compactability. The test is performed with highly fluidised
fresh concrete with superplasticiser.
Applicable to concrete with aggregates of 25 mm max. size.
C173 U-BOX, stainless steel made, with inside smooth walls,
equipped of a flow obstacle formed by four vertical reinforcement
bars. The bars have Ø 10 mm and the light
between them is 35 mm.
A gate in guillotine form splits the vertical portion of the
box from the horizontal one.
Dimensions: 480x250x680 mm
Weight: 20 kg approx.
S200-11
STRAIGHT EDGE, 300 mm long, galvanized steel, to
level the concrete.