Table 4.

Secant modulus (MPa) for Y samples.

EY (MPa)
SL	S1	S2	S3	S4	S5	Mean	St
0%	241.00	229.69	223.51	184.60	196.89	215.14	23.54
5%	458.95	495.90	547.48	428.32	447.81	475.69	47.07
10%	684.78	552.60	644.77	576.72	626.97	609.41	53.00
15%	474.98	473.70	420.99	415.50	453.48	434.91	28.30