Tabel Berat Isi

Silinder Massa

Total

Kotor

(Mt +

Mr

Massa

Ring

(Mr)

Massa

Total

(Mt)

Kadar Air Sub Sampel

(W)

Diameter

(d)

Tinggi (p) Tanah

Basah +

Kaleng

(Tb+K)

Tanah

oven +

Kaleng

(To+K)

Kaleng

(K)

cm cm G g g g g g

4,66 5,28 289,71 121 168,71 110,45 75,93 2,65

Ket :

d = Diameter ring

p = Tinggi ring

Tb = Massa tanah basah sebelum dioven

To = Massa tanah oven

K = Massa Kaleng

W = Kadar air massa

Ma = Massa air

Mp 1 = Massa padatan sub sample

Mp 2 = Massa padatan dari berat total

π = 3,14

Perhitungan:

1. Volume tanah (Vt) = 1/4 x π x d2 x p

= 0,25 x 3,14 x 4,662 x 5,28

= 90,01 cm3

2. Kadar air sub sampel (W) = Ma/Mp

= (Tb+K) – (To+K) / (To+K) - K

= (110,45 - 75,93) / (75,93 - 2,65)

= 34,52 / 73,28

= 0,47 g g-1

3. Massa padatan (Mp) = Berat total / (1 + ka. Sub)

= 168,71/ (1 + 0,47)

= 114,77 g

4. Berat Isi (BI) = Mp / Vt

= 114,77 / 90,01

= 1,27 g cm-3

Kadar Air Sub

(W)

Vol. Tanah Silinder

(Vt)

Massa Padatan

(Mp)

Berat Isi

(bρ)

g g-1 cm3 g g cm-3

0,47 90,01 114,77 1,27

Tabel Pengukuran Berat Jenis

Massa (g) Massa Padatan Volume Padatan BJ

L L + To L + To + A Mp Vp pρ

g g G g cm3 g.cm-3

55,5 75,4 166,8 19,9 8,6 2,31

Keterangan:

L = massa labu

To = massa tanah oven

A = massa air

Mp = massa padatan

Vp = volume padatan

Perhitungan:

1. Massa Padatan (MP) = ((L + To) – L)

= 75,4 – 55,5

= 19,9 g

2. Volume Padatan (VP) = 100 – ((L + To + A) – (L + To))

= 100 – (166,8 – 75,4)

= 100 – 91,4

= 8,6 cm3

3. Berat Jenis (BJ) = MP / VP

= 19,9 / 8,6

= 2,31 g.cm-3

Porositas = (1 – (BI / BJ)) x 100%

= (1- (1,27/ 2,31)) x 100%

= (1 – 0,55) x 100%

= 45%