406
12 Experimental Study on the Residual Seismic Resistance of UHPCC …
damage pattern of C-12 specimen after 1 kg TNT contact detonation. From Fig. 12.8b,
the dimensions of the blast induced crater, i.e., R x , R y and D c , were measured as
102 mm, 102 mm and 24 mm, respectively. The steel tube of C-12 specimen was
dilated laterally with the dimension (R w ) of 209 mm, which was 6 mm greater than
the original diameter. The distance between the crater center and the foundation
ground was found to be 251 mm, which was very close to 250 mm. Compared with
the C-11 specimen under the identical detonation scenario, the experimental damage
dimensions of C-12 column were nearly the same, which indicates the reproducibility
of the present field blast tests.
12.3.2.3 C-13 Specimen
Figure 12.9 illustrates the test results of C-13 specimen after 2 kg TNT contact explosive. From Fig. 12.9a, it can be observed that C-13 specimen had no global deformation, and only a localized crater was occurred beneath the explosive. Figure 12.9b
demonstrates that the crater also had an approximately elliptical shape with short
axis of 132 mm and long axis of 137 mm, respectively. The steel tube of C-13 specimen was dilated laterally with the dimension (R w ) of 218 mm, which was 15 mm
wider than the original diameter. Besides, the maximum depth of the crater (D c ) was
measured as 40 mm. Compared with the C-11 and C-12 specimens under 1 kg TNT
contact explosions, it demonstrates that the larger weight TNT charge will induce
more serious plastic deformation of the specimen. which was larger than that of
specimens after 1 kg TNT contact explosive. Besides, a major vertical fracture crack
occurred with the length and width of 105 mm and 6 mm, respectively. Several slight
cracks were also formed at the periphery of the crater due to the intensive detonation
Crack
248
Crushing
40
(b)
(a)
Fig. 12.9 Post-blast C-12 column a overall side view b frontal and side view of blast induced crater
(unit mm), reprinted from Wang et al. (2020b), copyright 2020, with permission from Elsevier
12 Experimental Study on the Residual Seismic Resistance of UHPCC …
damage pattern of C-12 specimen after 1 kg TNT contact detonation. From Fig. 12.8b,
the dimensions of the blast induced crater, i.e., R x , R y and D c , were measured as
102 mm, 102 mm and 24 mm, respectively. The steel tube of C-12 specimen was
dilated laterally with the dimension (R w ) of 209 mm, which was 6 mm greater than
the original diameter. The distance between the crater center and the foundation
ground was found to be 251 mm, which was very close to 250 mm. Compared with
the C-11 specimen under the identical detonation scenario, the experimental damage
dimensions of C-12 column were nearly the same, which indicates the reproducibility
of the present field blast tests.
12.3.2.3 C-13 Specimen
Figure 12.9 illustrates the test results of C-13 specimen after 2 kg TNT contact explosive. From Fig. 12.9a, it can be observed that C-13 specimen had no global deformation, and only a localized crater was occurred beneath the explosive. Figure 12.9b
demonstrates that the crater also had an approximately elliptical shape with short
axis of 132 mm and long axis of 137 mm, respectively. The steel tube of C-13 specimen was dilated laterally with the dimension (R w ) of 218 mm, which was 15 mm
wider than the original diameter. Besides, the maximum depth of the crater (D c ) was
measured as 40 mm. Compared with the C-11 and C-12 specimens under 1 kg TNT
contact explosions, it demonstrates that the larger weight TNT charge will induce
more serious plastic deformation of the specimen. which was larger than that of
specimens after 1 kg TNT contact explosive. Besides, a major vertical fracture crack
occurred with the length and width of 105 mm and 6 mm, respectively. Several slight
cracks were also formed at the periphery of the crater due to the intensive detonation
Crack
248
Crushing
40
(b)
(a)
Fig. 12.9 Post-blast C-12 column a overall side view b frontal and side view of blast induced crater
(unit mm), reprinted from Wang et al. (2020b), copyright 2020, with permission from Elsevier