CONSMAT Q4

Bitumen

Mixture of hydrocarbons of natural or pyrogenous origin and which are completely soluble in carbon disulfide.

Resin

Provides stickiness (adhesiveness)

Cohesion

Ability to hold the aggregate particles firmly

Asphalt Cement or Hot Asphalt

99% (bitumen) pure, 1% impurities, constituent of all other types, refined to meet specifications of paving, industrial and special uses.

Emulsified Asphalt

A heterogeneous system containing two normally immiscible phases (asphalt and water) in which the water forms the continuous phase of the emulsion and minute globules of asphalt form the discontinuous phase.

Emulsified Asphalt

An emulsion of asphalt cement and water (usually 60% asphalt and 40% water) which contains a small amount of an emulsifying agent (1 - 2% emulsifier).

Specific Gravity

gauge to the uniformity of supply of an asphalt (if it is being adulterated or diluted).

Specific Gravity

Value is used in the computation for establishing asphalt mix design (job-mix formula)

Specific Gravity

Value is useful in making volume correction when measurements are made at elevated temperatures.

Spot Test

Determines if asphalt is overheated or not during production.

Flash Point

Indicates the safe heating temperature of the asphalt, the temperature to which the material may be safely heated without danger of instantaneous flash (catching fire or explode) in the presence of an open flame.

Storage Stability

Detects the tendency of the asphalt globules in the emulsion to settle during storage.

Bituminous Mixture

Is a combination of aggregates that are uniformly mixed and coated with bituminous/asphalt materials such as asphalt cement, cutback asphalt or emulsified asphalt.