182622579-contoh-perhitungan-marshall.docx

4. Contoh Perhitungan Uji Marshall:

Berat Jenis Bulk Agregat (hasil pengujian)

= 2,576 gr/cm2

Berat Jenis Aspal (hail pengujian)

= 1,056 gr/cm2

Angka Kalibrasi (ditetapkan)

= 7,743

P (Kadar aspal tengah)

= 7%

Berat Agregat F1 + F2 + F3

= 1200 gr

Untuk Kadar Aspal P-1, Sampel 1 Tinggi Sampel (t)

= 5,67 cm

Aspal Terhadap Agregat (a)

= P-1 = 7%-1 = 6%

Aspal Terhadap Campuran (b)

=

1200 x 6% 1200+(1200 x 6%)

x 100

= 5,66% Berat Jenuh Benda Uji (c)

= 1102 gr

Berat Kering Benda Uji (d)

= 1108 gr

Berat dalam Air Benda Uji (e)

= 621 gr

Berat Isi Benda Uji (f)

= d-e = 1108 – 621 = 487 ml

Berat Isi Benda Uji (g)

c

= =

f 1102 gr 487 ml

= 2,26 gr/ml Berat Jenis Maks Teoritis (h)

100

=

(100−𝐴𝑠𝑝𝑎𝑙 𝑇𝑒𝑟ℎ𝑎𝑑𝑎𝑝 𝐶𝑎𝑚𝑝𝑢𝑟𝑎𝑛) 𝑏 ( )+( ) 𝑏𝑒𝑟𝑎𝑡 𝑗𝑒𝑛𝑖𝑠 𝑏𝑢𝑙𝑘 𝑎𝑔𝑟𝑒𝑔𝑎𝑡 𝑏𝑒𝑟𝑎𝑡 𝑗𝑒𝑛𝑖𝑠 𝑎𝑠𝑝𝑎𝑙

=

100 (

(100−5,66) 5,66 )+( ) 2,576 1,056

= 2,38 Bj Aspal (i)

𝑏𝑥𝑔

= 𝑏𝑒𝑟𝑎𝑡 𝑗𝑒𝑛𝑖𝑠 𝑎𝑠𝑝𝑎𝑙 =

5,66 𝑥 2,26 1,056

= 12,13%

Bj Agregat (j)

(100−𝑏)𝑥 𝑔

= 𝑏𝑒𝑟𝑎𝑡 𝑗𝑒𝑛𝑖𝑠 𝑏𝑢𝑙𝑘 𝑎𝑔𝑟𝑒𝑔𝑎𝑡 =

(100−5,66)𝑥 2,26 2,576

= 82,87% Jumlah Kand Rongga (k)

= 100 - i - j = 100 - 12,13 – 82,87 = 5,00%

VMA (l)

= 100 - j = 100 - 82,87 = 17,13%

VFA (m)

= 100 𝑥 = 100 𝑥

𝑖 𝑙 12,13 17,13

= 70,82% VIM (n)

𝑔

= 100 − [100 𝑥 ( ℎ )] 2,26

= 100 − [100 𝑥 ( 2,38 )] = 5,00% Pembacaan Dial (o)

= 132 kg

Stabilitas (p)

= o x angka kalibrasi = 132 x 7,743 = 1022,08 kg

Koreksi Stabilitas (q)

= p x faktor koreksi terhadap tinggi sampel (dari tabel data fisik benda uji normal) = 1022,08 x 1,210 = 1236,58 kg

Flow (r)

= 4,17 mm

QM (s)

= =

𝑞 𝑟 1236,58 4,17

= 296,54 kg/mm