11- The temperature range which is used for the mixing process of asphalt with aggregate in the Marshall Mix design is a) 175-190°C b) 121 - 145°C c) 154-160°C d) 138-149°C 12- The surface of asphalt layer should be a) Smooth b) Rough c) Sufficient enough to resist friction d) Very smooth

Q: An aggregate blend is composed of 59% coarse aggregate by weight (Sp. Gr.2.635), 36% fine aggregate…

A:

Q: the asphalt binder with Rostler Parameter value equal to 1.3 has more performance than asphalt…

A: Finding out true and false statement.

Q: Stone Mastic Asphalt is a gap graded type of mixture. O True O False

A: GIVEN: Statement Stone Mastic Asphalt is a gap graded type of mixture. TO FIND: Whether above…

Q: A portland cement concrete mix requires mixing sand having a gradation following the midpoint of the…

A: Make a table of given data: Sr. No. Sieve size Percent passing 1 100 2 2 50…

Q: liquid asphalt containing two petroleum-based 1. materials

A: According to our guidelines, we have to give one answer at a time. Solution; Liquid asphalt…

Q: In an aggregate mix, the proportions of coarse aggregate, fine aggregate and mineral filter are 55%,…

A: Given that :- In an  aggregate mix, Proportions of coarse aggregate = W1% = 55% Proportions of fine…

Q: The mix design for an asphalt concrete mixture requires 2 to 6% minus 0.075 mm. The three aggregates…

A: Solution: Given Data: Coarse=0.5%Intermediate=1.5%   Fine =11.5% Approximately equal amount of…

Q: The table below lists data used in obtaining a mix design for an asphalt paving mixture. If the…

A: Part - a   The bulk specific gravity of aggregates in the mix =Gsb = Pca + Pfa + PmfPcaGbca +…

Q: As part of mix design, a laboratory-compacted cylindrical asphalt specimenis weighed for…

A: Given:- The dry mass in the air = 1264.7 grams The submerged mass = 723.9 g The mass of the…

Q: Aggregate with greater moisture absorption will need more bitumen content during asphalt mixing.…

A: Aggregate has small cracks on their surface, which is responsible for absorption of water on the…

Q: A compacted asphalt concrete specimen contains 5% asphalt binder (Sp. Gr. 1.023) by weight of total…

A: Concrete is part of the pressure as one does not know. There is therefore a need built in such a way…

Q: The mix design for an asphalt concrete mixture requires 2 to 6% minus No.200. The three aggregates…

A: Given data: Coarse= 0.5% Fine= 11.5% Intermediate= 1.5%

Q: For the three following stockpiled that used to manufacture HMA, the percent of each aggregate and…

A: Given data  PA = 50%.       GAb(A) = 2.695 PB = 25%        GAb(B) = 2.711 PC = 25%        GAb(C) =…

Q: a) Distinguish clearly between hot-mix asphalt and warm-mix asphalt. Why is the latter set to become…

A: Hot Mix Asphalt: Hot mix asphalt or HMA are asphalt mixtures that are heated and poured at…

Q: Cationic asphalt emulsions are most useful in which of the following situations?     When working…

A: Cationic asphalt emulsions are specifically designed to work well with wet aggregates. They have a…

Q: The following figure shows the results from the dynamic modulus test for asphalt mixtures. The…

A: To calculate the dynamic modulus, we need to use the formula: |E*| = π2×ρ×hT2×ε where: π = 3.14…

Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.