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(R
-R
)B would be -12.2 microstrains, therefore the result of Equation 5 on page
1
0
16 in Section 6.5 would be zero actual strain in the concrete slab.
On the other hand, if the concrete slab is free of all restraint, and experiences a
temperature change of 1 C, then the concrete would expand 10 microstrains,
while the vibrating wire would expand 12.2 microstrains. The value of (R
-R
)B
1
0
would then be -2.2 microstrains (the vibrating wire would slacken slightly), and
Equation 5 would yield a value of 10 microstrains.
30 | MEASUREMENT AND CORRECTION OF TEMPERATURE EFFECTS | GEOKON
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