1.3 Instrumentation and Loading Scheme
9
1.3.5 Three-Point Flexural Test
As shown in Fig. 1.7, the beam specimens with a 30 mm notch at mid-length were
fabricated and loaded in the three-point flexural test. An electromechanical univerasl
testing machine (MTS-810) with maximum load capacity of 250 kN was used, and
the loading rate was set as 0.1 mm/min. The similar measuring method with the
four-point flexural test was adopted to obtain the averaged mid-span deflection, and
the CMOD was measured by using a clip gauge (with a maximum capacity of 5 mm)
attached to the bottom of the specimens. Both the flexural load–deflection and the
flexural load-CMOD curves were recorded in the test.
LVDT
Specimen
Clip gauge
(b)
P
150
150
0
5
0
5
100
100
100
30mm notch
Clip gauge
(a)
Fig. 1.7 Three-point flexural test with notched beam a dimensions of specimen (unit mm) b setup,
Ren et al. (2018), copyright 2020, with permission from Elsevier
9
1.3.5 Three-Point Flexural Test
As shown in Fig. 1.7, the beam specimens with a 30 mm notch at mid-length were
fabricated and loaded in the three-point flexural test. An electromechanical univerasl
testing machine (MTS-810) with maximum load capacity of 250 kN was used, and
the loading rate was set as 0.1 mm/min. The similar measuring method with the
four-point flexural test was adopted to obtain the averaged mid-span deflection, and
the CMOD was measured by using a clip gauge (with a maximum capacity of 5 mm)
attached to the bottom of the specimens. Both the flexural load–deflection and the
flexural load-CMOD curves were recorded in the test.
LVDT
Specimen
Clip gauge
(b)
P
150
150
0
5
0
5
100
100
100
30mm notch
Clip gauge
(a)
Fig. 1.7 Three-point flexural test with notched beam a dimensions of specimen (unit mm) b setup,
Ren et al. (2018), copyright 2020, with permission from Elsevier