Determine the allowable number of repetitions N for an asphalt mix that has the design modulus of 3.2×10×106kPa. The load-induced tensile strain at the base of the asphalt beam specimen was 150με. Given, the percentage by volume of bitumen in the asphalt was 10.0, the laboratory to service life fatigue factor was 5, and the project had the desired reliability of 90%.

Q: Discuss the failure criterions considered in Asphalt Institute (AI) methods.

A: Asphalt Institute method: It is an analysis that calculates fatigue damage on the set of specimens…

Q: Based on a Mixture design analysis you determined an optimum asphalt content of 5%. Based on this…

A: Givenaggrigate 1=55 %     G1=2.75aggrigate 2=40 %     G2=2.71aggrigate 3=5 %     G3=2.68after…

Q: Q2) The following results were obtained from testing a certain asphalt binder: Original Asphalt RTFO…

A: After analyzing the test results, the following conclusions were made,

Q: Kindly give me all right answers with short explanation. Please don't miss anything.  Modulus of…

A: Modulus of resilience and toughness are approximately equal for linear perfectly plastic materials.…

Q: 20. In the PCA design procedure of rigid highway pavements, the fatigue damage analysis is based on…

A: The Fatigue damage analysis used in the PCA Pavement design method is based on the edge stress…

Q: An asphalt concrete mix has a density of 2410 kg/m³ and an asphalt content of 5.5%. The asphalt…

A: The given data is: Density=2410 kg/m3 Asphalt content=5.5% Asphalt absorption=0.7% Relative gravity…

Q: A trial mix is required for a pavement slab being constructed exposed to freezing and thawing as…

A: Design strength of trial mix = 32 MPa Slump = 75 mm For sand: FM = 2.80 Absorption = 1.5% Nominal…

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.