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A. Rumus perhitungan perkiraan awal kadar aspal rancangan (Pb) Pb = 0,035 (%CA) + 0,045 (%FA) + 0,18 (%FF) + Konstanta Dimana :
Pb = Perkiraan kadar aspal rencana awal
CA =
Aggregat kasar, butiran aggregat > 2,36 mm
FA
= Aggregat halus, butiran aggregat < 2,36 mm dan > 200 Mesh
FF
= Bahan pengisi, butiran aggregat < 200 mesh
Konstanta =
Kira-kira 0,5 - 1 untuk laston dan 1 - 2 untuk Lataston
Perhitungan perkiraan awal kadar aspal rancangan (Pb) CA
= (100 – 40.48)% = 59.52%
FA
= (100 – 59.52 – 8.06)% = 32.42%
Ff
= 8.02%
Pb
= 0,035 (59.52%) + 0,045 (32.42%) + 0,18 (8.06%) + 1 = 2,083 + 1.459 + 1.451 + 1 = 5.993% ≈ 6%
ANALISA DAN PERHITUNGAN Perencana campuran aspal panas I.
5,5% F1. = 20%
= 226.8 g
F2. = 20%
= 226.8 g
F3. = 30%
= 340.2 g
F4.
= 340.2 g
=30%
Aspal II.
6% F1. = 20%
= 225.6 g
F2. = 20%
= 225.6 g
F3. = 30%
= 338.4 g
F4. = 30%
= 338.4 g
Aspal
III.
= 66 g
= 72 g
6,5% F1. = 20%
= 224.4g
F2. = 20 %
= 224.4 g
F3. = 30%
= 336.6 g
F4. = 30%
= 336.6 g
Aspal
= 78 g