When a sample subjected to the procedure of ASTM C40 produces a color darker than the standard color, Circular Disk No. 14 or Organic Plate No. 3 (Gardner Color Standard No. 14), the fine aggregate under test shall be considered to possibly contain injurious organic impurities. It is advisable to perform further tests before approving the fine aggregate for use in concrete. Identify that test to be performed.

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

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

A:

Q: A sample of coarse aggregate was tested in a laboratory to find its moisture content. The wet weight…

A: Dry weight=5235.1gmWet weight=5403.5gmMoisture content=Wwet-WdryWdry×100Free water=MC-Absorption

Q: 2.69 Question No.4 (Answer 2 sections, with the 3rd (c) being of the them (compulsory) 20% a.…

A: Step 1: Step 2: Step 3: Step 4:

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

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

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Q: Discuss the effect of the amount of material passing the 0.075-mm sieve on the stability, drainage,…

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Q: 1000 g coarse aggregate sample taken from the site showed the following properties in the…

A: Bulk Dry specific gravity is given by ;Bulk Dry specific gravity = Bulk Dry specific gravity = Bulk…

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.