f. The effective specific gravity of the agg2. Determine the Max, theoretical specific gravity of asphalt pavement mixture necessaryproviding a zero air voids. Assuming the following: relative compaction 91% and Marshall Density2.619 gm/cm³.(5%)3. Determine the relative compaction of asphalt pavement mixture necessary for providing a 4.2% airvoids. Assuming the following: Bulk G of combined aggregate-2.53, asphalt cement (Gs-1.05)-6% byweight of total mix, % of absorbed asphalt-1.4% by weight of aggregates and Marshall Density= 2.349gm/cm³ (5%)1

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Answered: f. The effective specific gravity of…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 5P: Given the specifications for an asphaltic concrete mixture and the results of a sieve analysis,...

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A paving mixture is prepared for surfacing a section of highway as follows; AC-20 asphalt cement, Gs=1.05, total content =6 % by total weight of mixture. Combined aggregate (bulk G) = 2.65, MaxGm=2.5, Marshall density = 2.458 gm/cm³. Determine the relative compaction of pavement necessary for providing VFA-70%. A
B: The wearing course of asphalt is compacted to density of (2.395 gm/cm³). Using 5.5% asphalt cement by weight of total mixture (Gs=1.04), assuming that the absorbed asphalt equal to (0.8%) by weight of aggregate and bulk G of aggregate (2.66 gm/cm³. Determine: A.V%, V.M.A% and V.F.A%?
Determine the relative compaction of asphalt pavement necessary for providing a 4% air voids, bulk density of combined aggregate Gsb=2.529, percentage of asphalt content (Pb= 6 %) by weight of total mix (Gb=1.05), percentage absorbed asphalt (Pba-1.5 %) by weight of aggregate, bulk specific gravity of compacted specimen=2.350 gm/cm³?
Q3 The asphalt concrete have been designed with asphalt content 4.8% (Gb= 1.045), and the aggregate characterization (Gsb= 2.66, Gse=2.72). Calculate the volumetric properties of the mixture, if the relative compaction 95% and the lab density of mixture = 2.507gm/cm³
A:: Select the optimum asphalt content for the following data? % of Bulk Stability Flow Asphalt density g/cc Маx KN VFA% VMA% VTM % (mm) sp.gr 2.31 2.49 10 57 19.1 8.2 2.58 4 2.35 2.44 11.3 63 16.9 6.15 2.7 4.5 2.38 2.4 12.6 76 16.2 3.8 2.98 5 2.36 2.38 9.5 79 15.8 3.5 3.6 5.5 В: The wearing course of asphalt is compacted to density of (2.395 gm/cm³). Using 5.5% asphalt cement by weight of total mixture (Gs=1.04), assuming that the absorbed asphalt equal to (0.8%) by weight of aggregate and bulk G of aggregate (2.66 gm/cm. Determine: A.V%, V.M.A% and V.F.A% ?
Given the information above and below, the Gse for 5% asphalt content is: A.C.= 6.0% A = Dry wt. of mixture sample A = 1135.0 g B = wt. of pycnometer + H2O B = 740.0 C = wt. of pycnometer + H2O + sample C = 1438.0 2.576 O 2.877 O 2.495 O It cannot be calculated with the information given. I| || ||
Select the optimum asphalt content for the following data? %of Bulk Stability Flow Asphalt density g/cc Мах KN VFA% VMA% VTM % (mm) sp.gr 2.31 2.49 10 57 19.1 8.2 2.58 4 2.35 2.44 11.3 63 16.9 6.15 2.7 4.5 2.38 2.4 12.6 76 16.2 3.8 2.98 2.36 2.38 9.5 79 15.8 3.5 3.6 5.5
According to the available data of asphalt Gb= 1.025, Pb = 4.5), Aggregate (Gsb = 2.605, Gse: 2.635), and mix has Gmb properties of a compacted HMA paving mixture, Taking advantage of the use of phase diagram approach to solve it. 2.428. As shdwn in the Figure below, calculate the volumetric %3D Ма Air Va VMA Mbe Asphalt binder Vbe Mb Vb Mba Absorbed asphalt Vba Mmb Vmb Ms Vsb Mse Aggregate Vse
If the absorbed asphalt t by aggregate =0.25%,and effective asphalt =5.75%. The total asphalt content will be? 55 A. 5.5% B.6.25% C.6% D.5.25% Kindly give me right solution with clear calculations
Find optimum asphalt content according to Marshall Specifications? Unit Binder Stability Flow (kN) weight Va % VFA % (g/cm) Content (mm) 4 8.5 1.5 2.014 6.5 55 4.5 9.3 2.3 2.336 4.2 67 10.4 2.8 2.357 3.1 76 5.5 9.3 3.7 2.236 2.5 82 6. 7.5 4.3 2.156 88 Specifications Stability Flow Va VMA VFA >8 kN 2-4 mm 3-5 % >14% 65-75 %
The core densities listed were obtained from a com- pacted asphalt concrete pavement: core A = 142.9 pcf, core B = 149.9 pcf, and core C= 143.4 pcf. Determine the percentage of compaction if the laboratory density of the mix was 147.1 pcf. Do any of the cores indicate potential problems with the pavement?
A 7 inch Hot Mix Asphalt layer is placed directly on a subgrade soil which has a resilient modulus of 10,000 psi. The estimated future ESAL is 20 million. Use AASHTO and Asphalt Institute method to check the available thickness and the need for overlay. The resilient modulus of HMA is 450,000psi. Assume any missing data within the normal range

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