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

Table 4

Cylinder strength for 7 days and detected crack sizes.

S. no.	Load in	7-day splitting tensile strength in N/mm^2	Cracks in mm
1.	25	0.71	0.00
2.	50	1.06	0.10
3.	75	1.41	0.50
4.	100	1.77	1.30
5.	125	2.12	1.90
6.	179	2.53	2.50