The Measurement of P-, S-, and R-Wave Velocities to Evaluate the Condition of Reinforced and Prestressed Concrete Slabs

Table 5

The results of statistical analysis for slabs S1, S2, and S3.

Type of measurement	Type of slab	Statistics				⁢Goodness-of-fit test
		Sample size	Avg(σ); m/s	Std(μ); m/s	COV			value	Probability distribution
P-wave	S1	40	3285	97	0.030	0.16	0.21	0.20	Normal
	S2	40	3367	146	0.043	0.20	0.21	0.05	Normal
	S3	40	3362	110	0.033	0.19	0.21	0.09	Normal
S-wave	S1	20	1911	95	0.049	0.23	0.29	0.18	Normal
	S2	20	1961	169	0.086	0.24	0.29	0.17	Normal
	S3	20	1952	62	0.032	0.20	0.29	0.33	Normal
R-wave	S1	12	1880	69	0.037	0.18	0.37	0.76	Normal
	S2	12	1934	79	0.041	0.20	0.37	0.65	Normal
	S3	12	1918	75	0.039	0.22	0.37	0.51	Normal

Avg(σ) = average velocity; Std(μ) = standard deviation; COV = coefficient of variable (= (%)).