PROJE ADI / PROJECT NAME
SELF-COMPACTING CONCRETE (SCC)
J-Ring Test Report as per EN 12350-12
1
Reference
Standard
EN 12350-12, Testing Fresh Concrete Part-12 Self-Compacting Concrete –J Ring Test
EN 206-9 Concrete Part 9: Additional Rules for Self-compacting Concrete (SCC)
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2
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4
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Mix Design No.
Identification of Test Sample (Truck-mixer no.)

Test Location
Any indication of segregation of the concrete
Narrow or wide gap J-ring used
J-ring Blocking step Bj, (to the nearest 1 mm)
Bj= [(Δhx1+Δhx2+Δhy1+Δhy2)/4]-Δho ,
Δh=Measured height
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J-ring low spread SFj, (to the nearest 10 mm)
SFj=(dm+dr)/2, dm: largest diameter of flow
spread, in mm
dr: flow spread at 90oC to dm, in mm
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Date & Time of Test
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Age of Concrete at time of test
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Any deviation from the standard test method
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Concrete Temperature oC (at the time of test)
12
t500j time (to the nearest 0.5s) [T500j:J-ring time
is the period between the cone leaves the base
plate and SCC first touches the circle of diameter
500 mm.]
Remarks (indicate if any deviation from the standard test method):

Passing Ability Classes -J-Ring
Class
L-Ring step (mm)
PJ1
<= 10 with 12 bars
PJ2
<= 10 with 16 bars
The specification is not applicable to concrete
with a maximum aggregate size exceeding 40
mm
1-slump cone, 2- J ring, 3- Base Plate, 4-Concrete
Testing Laboratory
Name & Surname
Date
Signature
CV-0026
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