Answer the questions below How can determine the quantity of prime coat? What is the main effect of increasing in prime coat quantity? ii. iii. Sketch Petroleum asphalt flow chart. What are the main reasons to modify asphalts with polymers?

Answer the questions below How can determine the quantity of prime coat? What is the main effect of increasing in prime coat quantity? ii. iii. Sketch Petroleum asphalt flow chart. What are the main reasons to modify asphalts with polymers?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Bituminous Materials

The word 'bituminous' in Bituminous materials come from the word bitumen, which is popularly known as 'asphalt' in the United States. Asphalt is a heavier substance that is obtained by the fractional distillation of crude oil, after removing the lighter components such as gasoline and diesel. Asphalts are known to have good adhesive and waterproofing properties. Depending upon the grade needed, asphalt may be refined several times in the fractional distillation column.

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Quèstion 22 If TSR (Tensile Strength Ratio) is less than 0.8: O the asphalt concrete mix is not enough secured against moisture O we can improve its quality by increasing asphalt content or using a higher viscosity asphalt O stripping may occur to asphalt concrete pavement O all of the above
2210 kg of aggregate with bulk specific gravity of 2.653 is mixed with 146 kg of asphalt with specific gravity of 1.02 to make 1 cubic meter of compacted asphalt mix. What is the asphalt content of this mix? 5.8% 6.0% 6.2% O 5.6%
Q1A In a Marshall test, the percentage of asphalt binder by total weight of aggregate is 5.3%. The bulk specifc gravity of aggregate (G)-2.582, the specifc gravity of asphalt binder (G)=1.000, and the density of water 3 (Yw)=1.000 g/cm. If the voids flled with asphalt (VFA) is 70.0% and the effective asphalt binder (Pbe) is 4.0% by total weight of mixture, determine the following properties: a. The absorbed asphalt binder (Pba) b. The bulk specifc gravity of the compacted mixture (Gmb) c. The voids in mineral aggregate (VMA) d. The voids in total mixture (VTM) e. The theoretical maximum specifc gravity of the loose mixture (Gmm) The effective specifc gravity of the aggregate (Gse) ال
Q. 3 a) Distinguish clearly between hot-mix asphalt and warm-mix asphalt. Why is the latter set to become the mix of the future in asphalt pavement works? b) Explain why asphalt concrete samples from the hot-mix plant are taken for compaction in the laboratory during asphalt overlay construction. c) The following data was taken from a laboratory work sheet on the design of asphalt concrete by the Superpave procedure for a selected aggregate structure: Trial Mix 1 %Gmm@Ndegn=96%, Qam=2470kg/m Trial Mix 2 P.=5.0%, Gmb@Nasgn=2.305 Based on the data, determine the following: i. P, of Mix 1 11. VMA of Mix 1 111. Gmm of Mix 2 Take Ga =2.65, G=2.69, for the aggregates and G,=1.02 for the bitumen used.
Problem No. 1A flexible pavement for an urban interstate highway is to be designed using the AASHTOmethod to carry a design ESAL of 3 x 106. It is estimated that it takes about a week for water tobe drained from within the pavement and the pavement structure will be exposed to moisturelevels approaching saturation for 30% of the time. The following additional information is available: Elastic modulus of asphalt concrete = 450,000 psiResilient modulus of base material = 35,000 psiResilient modulus of subbase material = 15,000 psiCBR of subgrade material = 8(a) Consider designing the same pavement with only asphalt concrete and base layer (excluding subbase layer). Use the information provided in Problem 1. (b) Compare strengths and weaknesses of each design.
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During construction of the surface layer of asphalt pavement, two samples were taken every day to measure the asphalt content in the mix to ensure that it is within the specification limits. The target value was set at 5.5% with a tolerance of +-0.4 ,. The asphalt content data shown in Table were collected: a. Calculate the mean, standard deviation, and the coefficient of variation of the data. b. Using a spreadsheet program, create a control chart for these data showing the target value and the upper and lower specification limits. Are the asphalt content data within the specification limits? Comment on any trend and possible reasons.
i need the answer of all parts
BMD revolves around the concept of balancing rutting and cracking of the mix. The figure below applies to all three different BMD methodologies. Using your own words explain all different components of this figure, how BMD is achieved, and what different tests and parameters are used to assess the asphalt mixes cracking and rutting performance. Submit your solution in a word file (maximum number of words allowed: 800) Cracking Durable Min Max Rinder Content Stable Rutting
An asphalt concrete mix contains 2250 Kg of agg. and 150 Kg of asphalt per 1 m², asphalt absorption is 1.2%, bulk specific gravity of agg. 2.67, specific gravity of asphalt = 1.05. Find the mass-volume relation. 5.8%, asphalt 2) Relative density for asphalt pavement is 2440 Kg/m³, asphalt content = absorption = 0.2% and Sp. gr. of asphalt = 1.03. Determined Mass- Volume relationship. 3) Bulk density of asphalt pavement mix = 1.7 ton/m², specific gravity of asphalt = 1.03, specific gravity of agg. (Apparent = 2.45 and Bulk = 2.34) and asphalt content = 5%. Determine mass- volume relationship
The wearing course of an asphalt pavement is compacted to density of 2.395 g/cm3 using 5.5% asphalt content by weight of total mix and specific gravity =1.04. Assuming that the absorbed asphalt equal to 0.8%by the weight of aggregate, and the bulk specific gravity of the aggregate is 2.66, determine if the compacted pavement is suitable for durability requirement or not?
asphalt The wearing coarse of an asphalt pavement is compacted to density of 2.395gm/cm³ using 5.5 asphalt content by weight of total mix (Gb=1.04). assuming that the absorbed asphalt equal to 0.8% by the weight of aggregate and the bulk specific gravity of combined aggregate =2.66. Determine if the compacted pavement is suitable for durability requirement or not?