InstroTek Auto_SCB - Page 29

InstroTek
23
Parameters and Test Methods
* Requires SCB breaking head
** Requires Lottman breaking head
Test Methods
(Standard)
Parameter
I-FIT
(Illinois)*
AASHTO
TP124
LSU*
ASTM
D8044
IDEAL-CT**
ASTM
Proposed
TSR**
AASHTO T
283
Pre-load rate
0.05
kN/sec
2
mm/minut
e
0.05
kN/sec
Disabled
Pre-load force
0.1 kN
0.045 kN
0.1 kN

Pre-load pause
10 sec
15 sec
10 sec

Preload Release
NONE
TIME
NONE

Unload speed

5 mm/min


Unload Time (used if
unload mode is
“TIME”)

6 sec


Rate
50 mm/min
0.5
mm/min
50 mm/min
50 mm/min
Start load
0.1 kN
0.1 kN
0.1 kN
0.1 kN
Stop criterion
LOAD
Percentag
e
LOAD
LOAD
Stop criterion value
0.1 kN
25%
0.1 kN
1.0 kN