Lightweight Concrete for High Strength - Expanded Shale & Clay
Lightweight Concrete for High Strength - Expanded Shale & Clay
Lightweight Concrete for High Strength - Expanded Shale & Clay
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120<br />
100<br />
80<br />
Stress (ksi)<br />
60<br />
40<br />
20<br />
0<br />
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16<br />
Strain (in/in)<br />
Specimen 2 Specimen 3 Specimen 4<br />
Figure 5.9 Stress-strain curves <strong>for</strong> #4 rein<strong>for</strong>cing bars<br />
5.6 Transfer Length<br />
Transfer length was measured at each end of each girder. The strain values were smoothed to<br />
give results shown in Figures 5.10 and 5.11. The transfer length results are given in Table 5.5. The<br />
average transfer length <strong>for</strong> the G1 girders was 21.9 inches and <strong>for</strong> the G2 girders was 15.6 inches.<br />
These values are all less than 50 times the strand diameter which is normally assumed as the transfer<br />
length.<br />
5-13
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