- 1 Fill Up The First Row Of The Following Table And Find The Optimum Asphalt Content Flow Vma Vfa Density Kg M3 Air V 1 (185.23 KiB) Viewed 17 times
- 1 Fill Up The First Row Of The Following Table And Find The Optimum Asphalt Content Flow Vma Vfa Density Kg M3 Air V 2 (333.69 KiB) Viewed 17 times
- 1 Fill Up The First Row Of The Following Table And Find The Optimum Asphalt Content Flow Vma Vfa Density Kg M3 Air V 3 (313.16 KiB) Viewed 17 times
1. Fill up the first row of the following table and find the optimum asphalt content: Flow VMA VFA Density(kg/m3) %Air Voids Stability (KN) (mm) (%) (%) AC% 4.5 9.3 2.6 5 2400 4 9.8 3.1 15 75 5.5 2380 3.4 8.3 16 78 6 2342 2.9 7.7 16.5 82.5 6.5 2318 2.6 6.2 4.6 17 85 Given, Mass of the specimen M = 1241.8 g Volume of the specimen. = Bulk density of aggregate, PG = = Binder absorption (% of aggregate mass), PBAG Binder content (% of specimen mass), PB Density of binder, PB = = Requirements: Minimum Stability = 9 KN Minimum Flow = 2 Maximum Flow = 4 VFA = 65-75% VMA = 14-17% ~ 33 34 500 1 3.5 3.8 523.8 cm³ 2.65 g/cm³ 1.5% 5.5% 1.01 g/cm³
2. Find the optimum asphalt content using the following graphs 2.370 2.360 20 2.350 19 2.340 18 2.330 17 16 2.320 2.310 SP. GR.(SPECIMEN) % ASPHALT STABILITY-NEWTONS 11 000 10 500 10 000 9500 9000 8500 % ASPHALT 5.5 09 92 92 % VMA % ASPHALT % VFA 90 85 80 75 BRIG 70 65 % ASPHALT 5 5 5.5 6.0 C'9 7.0 7.5
% ASPHALT 5.5 6.0 6.5 7.0 7.5 % ASPHALT 5.5 6.0 6.5 7.0 7.5 FLOW-UNITS 11 12 13 14 15 16 % AIR VOIDS 3 4 5 1