IoT-Based Intelligent System for Internal Crack Detection in Building Blocks

Table 2

Cube strength for 14 days and detected crack sizes.

S. no.	Load in	14-day cube compressive strength in N/mm^2	Cracks in mm
1.	50	2.22	0
2.	100	4.44	0.20
3.	150	6.67	0.50
4.	200	8.89	0.50
5.	250	11.11	0.70
6.	300	13.33	0.70
7.	350	15.56	0.90
8.	400	17.78	1.26
9.	450	20.00	1.55
10.	515	22.88	1.95