Strona 2_redak - Instytut Agrofizyki im. Bohdana DobrzaÅskiego ...
Strona 2_redak - Instytut Agrofizyki im. Bohdana DobrzaÅskiego ...
Strona 2_redak - Instytut Agrofizyki im. Bohdana DobrzaÅskiego ...
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129<br />
Table 16.19. Mean values (±St. Dev.) of the friction coefficient µ of barley grain variety Rudnik at<br />
the moisture content of 10-20% against stainless steel, galvanized steel and concrete B30 determined<br />
at the normal pressure of 0.5-2.5 kPa<br />
Moisture<br />
content (%)<br />
10<br />
12.5<br />
15<br />
17.5<br />
20<br />
Normal stress<br />
(kPa)<br />
0.5<br />
1.0<br />
1.5<br />
2.1<br />
2.5<br />
0.5<br />
1.0<br />
1.5<br />
2.1<br />
2.5<br />
0.5<br />
1.0<br />
1.5<br />
2.1<br />
2.5<br />
0.5<br />
1.0<br />
1.5<br />
2.1<br />
2.5<br />
0.5<br />
1.0<br />
1.5<br />
2.1<br />
2.5<br />
Coefficient of friction µ<br />
Stainless steel Galvanized steel Concrete B30<br />
0.257 ± 0.002 0.252 ± 0.003 0.428 ± 0.015<br />
0.242 ± 0.009 0.244 ± 0.006 0.402 ± 0.008<br />
0.241 ± 0.012 0.237 ± 0.010 0.405 ± 0.018<br />
0.234 ± 0.009 0.225 ± 0.004 0.383 ± 0.007<br />
0.226 ± 0.005 0.228 ± 0.007 0.408 ± 0.006<br />
0.280 ± 0.008 0.269 ± 0.003 0.347 ± 0.019<br />
0.245 ± 0.010 0.266 ± 0.002 0.335 ± 0.014<br />
0.239 ± 0.010 0.259 ± 0.005 0.351 ± 0.019<br />
0.239 ± 0.008 0.248 ± 0.007 0.258 ± 0.001<br />
0.252 ± 0.005 0.233 ± 0.021 0.273 ± 0.022<br />
0.258 ± 0.006 0.273 ± 0.005 0.382 ± 0.015<br />
0.256 ± 0.009 0.264 ± 0.004 0.401 ± 0.009<br />
0.241 ± 0.007 0.250 ± 0.003 0.323 ± 0.014<br />
0.234 ± 0.014 0.247 ± 0.012 0.293 ± 0.024<br />
0.232 ± 0.004 0.246 ± 0.012 0.317 ± 0.032<br />
0.278 ± 0.010 0.325 ± 0.012 0.368 ± 0.020<br />
0.267 ± 0.002 0.267 ± 0.007 0.338 ± 0.001<br />
0.256 ± 0.007 0.247 ± 0.010 0.320 ± 0.009<br />
0.240 ± 0.005 0.256 ± 0.018 0.332 ± 0.005<br />
0.238 ± 0.004 0.240 ± 0.008 0.302 ± 0.015<br />
0.279 ± 0.012 0.352 ± 0.004 0.414 ± 0.010<br />
0.266 ± 0.006 0.298 ± 0.009 0.438 ± 0.006<br />
0.252 ± 0.012 0.281 ± 0.019 0.428 ± 0.006<br />
0.251 ± 0.015 0.273 ± 0.013 0.386 ± 0.035<br />
0.245 ± 0.011 0.283 ± 0.008 0.369 ± 0.024