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

Table 6

Cylinder strength for 28 days and detected crack sizes.

S. no.	Load in	28-day splitting tensile strength in N/mm^2	Cracks in mm
1.	25	0.35	0.00
2.	50	0.71	0.00
3.	75	1.06	0.05
4.	100	1.41	0.10
5.	125	1.77	0.30
6.	150	2.12	0.50
7.	175	2.48	1.15
8.	200	2.83	2.65
9.	225	3.18	3.15
10.	254	3.59	3.50