Asphalt Questions And Answers | Updated Solutions | 100% Correct Answers

The three forms of asphalt - Asphalt cement - asphalt cutback - asphalt emulsion explain asphalt cement -a blend of hydrocarbons of different weights. as asphalt shifts to heavier weights it becomes harder and more viscous. (the adhesive) Asphalt cement + agg = asphalt concrete explain asphalt cutback made by dissolving asphalt cement in solvent. when sprayed on pavement or mixed with agg it evaporates leaving asphalt residue as binder. (used for maintenance and emulsion) cutbacks are expensive and toxic though explain asphalt emulsion an alternative to dissolving asphalt in solvent, it is dispersed in water as emulsion. name some uses of asphalt - the main use of asphalt is in pavement construction and maintenance - another use is in sealing and waterproofing roofs and underground foundations - asphalt concrete is used in patching asphalt and PCC pavements. - liquid asphalts such as cutbacks and emulsions are used in pavement maintenance 8/8/25, 3:39 PM Asphalt Flashcards | Quizlet consistency of asphalt most often? Temperature - if too cool the mix will be too brittle and crack if too warm the mix will flow readily resulting in permanent deformation (rutting) the primary hydrocarbons that make up asphalt hydrogen and carbon with minor components of sulfur, nitrogen, oxygen, and trace metals the three arrangements of asphalt 1) aliphatic or paraffin - straight or branched chains 2) saturated rings - highest hydrogen to carbon ratio 3) unsaturated rings or aromatic. what are asphaltenes and maltenes these are components of asphalt Maltenes (petroleras) consist of resins and oils and Asphaltenes are dark brown solids that are responsible for viscosity and adhesive property (consist of less than 10% of the asphalt explain performance grade characterization approach tests used to characterize the asphalt binder performance at pavement temps to rep upper, middle and lower range of service What is the rolling thin-film oven (RTFO) procedure used to simulate? the short term aging that occurs in the asphalt during production of asphalt concrete. name the three cutbacks that are produced - rapid curing (RC) - use hard residue in high volatile solvent like gasoline and cure in between 5 min and 10 min - medium curing (MC) - use medium hardness residue and less volatile solvent like kerosene and cure in a few days - slow curing (SC) - use low volatility solvent like oil and cure in a few months