Pacific Journal of Mathematics for Industry

Table 2 Tables of modification of the velocity (age of 4 weeks)

From: Principle of ultrasonic tomography for concrete structures and non-destructive inspection of concrete cover for reinforcement

Cement Paste
V	No-Styrofoam	Styrofoam 200mm	Styrofoam 300mm	V’	No-Styrofoam	Styrofoam 200mm	Styrofoam 300mm
Upper	3777	3800	3868	Upper
Center	3788	3824	3874	Center
Lower	3809	3700	3731	Lower		3756	3843
Cement Mortar
Upper	4223	4208	4223	Upper
Center	4204	4160	4192	Center
Lower	4229	4080	4034	Lower		4141	4155

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