Dynamic Mechanical Response, Cracking Behavior, and Stress Intensity Factors of Cement Mortar Specimens with Open and Closed Flaws

Table 1

Crack type and cracking sequence.

Specimen type	Crack types					Cracking sequence
	Type I shear	Type II shear	Type III tensile	Type IV tensile	Type V mixed mode
0°		a, d	b, c^1			c - d - b- a
15°	b, c		a, d^1			d - b, c - a
30°	b^1, c^1	a, d				b, c - a, d
45°	a^1, d	b, c				a - b - d - c
60°	a^1, d^1	b, c				a, d - b- c
75°	b^1, c			a^1, d		a, b - d - c
90°				a, b^1, c^1, d		b, c - a, d
0° (C)	b^1, c					b - c
15° (C)	a^1, d^1	b, c				a, d - b - c
30° (C)	b^1,c	a, d				b - d - c- a
45° (C)	b^1, c^1	a, d				b, c - d - a
60° (C)	a^1, d^1	b, c				a, d - b, c
75° (C)		b, c			a, d^1	d - a - b, c
90° (C)		b^1, c			a, d^1	b, d - a- c

Note. a¹ indicates that the crack labeled by alphabet a is the first crack observed before failure.