contoh perhitungan marshall
TRANSCRIPT
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 x6%
1200+(1200 x 6% )x100
= 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) = cf
= 1102gr487ml
= 2,26 gr/ml
Berat Jenis Maks Teoritis (h) =
100
((100−AspalTerhadapCampuran)berat jenisbulk agregat )+( b
berat jenisaspal )=
100
((100−5,66)2,576 )+( 5,66
1,056 )= 2,38
Bj Aspal (i) = b x g
berat jenisaspal
= 5,66x 2,26
1,056
= 12,13%
Bj Agregat (j) = (100−b ) x g
berat jenisbulk agregat
= (100−5,66 ) x2,26
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 il
= 100 x 12,1317,13
= 70,82%
VIM (n) = 100−[100 x( gh )]= 100−[100 x( 2,26
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) = qr
= 1236,58
4,17
= 296,54 kg/mm