Why is it important to have optimum binder content in asphalt concrete?What would happen if a less-than-optimum binder content is used? Whatwould happen if more than the optimum value is used? What is the typicalrange of binder content in asphalt concrete?

Q: Aggregates from two sources having bulk specific gravities of 2.753 and 2.649 were plended at a…

A: Given data: G1=2.753 w1=70 G2=2.649 w2=30

Q: ASTM C127 is the Standard Test Method for Density, Relative Density (Specific Gravity), and…

A: Given data in question  ASTM C127 For density,  Relative density and absorption capacity To find out…

Q: Define the fineness modulus of aggregate. What is it used for?

A: The fineness modulus is the measure of the fine aggregate’s gradation. The fineness modulus of…

Q: What is the amount of Moist Coarse Aggregate? b. What is the amount of SSD Fine Aggregate? c.…

A: Solution: Givendata  coarse aggregate = 1160 kg/m3  fine aggregate = 599 kg/m3 water content = 148…

Q: sp wt of SSD CA = 6135 g wt of submerged CA = 3901 g wt of oven-dry CA = 6008 g Calculate the bulk…

A: A=weight of oven dry coarse aggregate B=weight of SSD coarse aggregate C=weight of submerged coarse…

Q: Given the data in Table , select the blend and the design binder content for a Superpave design…

A:

Q: gravity=2.60, SSD Bulk Specific Gravity=2.63, apparent Specific gravity= 2.68, percent…

A: Specific gravity generally gives the information regarding the denseness of the aggregates.So,more…

Q: An aggregates sample has dry weight of 6.285 lb., SSD weight of 6.572 Ib. and net volume of 0.038…

A: Given- Wd=6.285lbWSSD=6.572lbV=0.038ft3ρW=62.4lb/ft3

Q: Which of the following is a common binder in the production of asphalt concrete? A) Cement B)…

A: Binding materials used in construction work are materials or substances that hold other materials…

Q: The following results were obtained for an asphalt binder. Determine if the binder meets the…

A: To determine -  If the binder meets the Superpave specifications for the followinga) Rutting b)…

Q: What does it mean if the Bulk Specific Gravity is 2.52 and the apparent specific gravity is 2.63 in…

A: It is defined as the ratio of the weight of the solid of the given volume to the weight of the…

Q: The mass of the aggregates to be tested in Los Angeles Abrasion Machine is 10,000g, what is the %…

A:

Q: In the manufacture of Portland cement, gypsum is added to the clinker and they are pulverised…

A: Solution- a)  i) Gypsum is a long-lasting admixture. ii) The addition of gypsum to the clinker…

Q: 9.25 An aggregate blend is composed of 59% coarse aggregate by weight (Sp. Gr. 2.635), 36% fine…

A: Given:-The percent of coarse aggregate by weight in aggregate blend = 59%The specific gravity of the…

Q: . For an aggregate sample, if you know that the apparent relative density is 2.72 and the water…

A: The apparent relative density is 2.72. Water absorption is w=1.2%. The dry mass of aggregates is…

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.