Kapilarnośc bierna |
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Hkb = (h - 5,0) + Δh |
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4,25 |
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Hkb – kapilarność bierna gruntu, cm |
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h – wysokość na jakiej nastąpiło ostatnie zatrzymanie lejka, cm |
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Δh = t·v – poprawka interpolacyjna, cm, gdzie v = 1 cm/min |
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t – czas, jaki upłynął od chwili zatrzymania lejka na poprzednim poziomie, min |
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Badanie wstępne |
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36 |
h - wysokość podniesienia próbki (pojawienie się pęcherzyka powietrza), cm |
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0 |
poziom zwierciadła wody, cm |
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wynik: |
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Hkb= |
36 |
cm |
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poziom wyjściowy do badań właściwych to: |
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0,7 Hkb = |
25,2 |
cm |
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Badanie właściwe I |
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41 |
h - wysokość podniesienia próbki (pojawienie się pęcherzyka powietrza), cm |
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5 |
t - czas utrzymania się próbki na danym poziomie, min |
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wynik: |
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Hkb= |
41 |
cm |
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Badanie właściwe II |
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46 |
h - wysokość podniesienia próbki (pojawienie się pęcherzyka powietrza), cm |
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3 |
t - czas utrzymania się próbki na danym poziomie, min |
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wynik: |
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Hkb= |
44 |
cm |
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ΔHkb = |
3 |
cm |
< |
4,25 |
cm |
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warunek poprawności przeprowadzenia ćwiczenia róznica między badaniami <0,1Hkb |
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wynik ostateczny: |
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Hkb = |
42,5 |
cm |
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