Asphalt Materials and Mix Design Manual

Asphalt Materials and Mix Design Manual

The purpose of the Manual for Asphalt Materials and Mix Design
(hereafter referred to as The MANUAL) is to familiarize students
with the technology of asphalt in its several forms namely
asphalt cement, cutback asphalt, and asphalt emulsions. The
laboratory work is designed to develop an understanding of
asphalt properties, characteristics, testing procedures, and
For engineering purposes three properties of asphalt are
paramount: consistency (usually referred to as viscosity),
purity, and safety. Before asphalt cement can be used for
construction purposes it must be liquefied. This implies heating.
Asphalt cement must be liquefied before it can be pumped through
pipes, mixed with aggregates to make asphalt concrete, or sprayed
through nozzles. Once the heat is dissipated, the asphalt cement
reverts to its amorphous, semi-solid state. There are other ways
to liquefy asphalt. Selected petroleum based solvents can
dissolve the asphalt cement to create a family of materials known
as cutback asphalts. Another method is to combine asphalt cement
with water in the presence of a catalyst to form various kinds of
asphalt emulsions.

The MANUAL consists of the following:
1. 3 5 of the frequently used ASTM tests in Asphalt
Binder and Mix Design.
2. Sample computations and easy to use Data Sheets, most of
which have been developed specifically for The MANUAL.
3. An up-to-date overview of Asphalt Technology including
sources, historical development, and classifications of
asphalt products.
4. Easy to understand explanations for Voids Mineral
Aggregate, Absorbed Asphalt, Effective Asphalt Content,
Percent Air Voids, and Percent of Voids filled with Asphalt.
5. A stand-alone asphalt manual, written specifically for
university laboratory instruction, yet applicable for a
commercial testing laboratory. Rarely will other reference
materials need to be consulted.
6. Dimensions in both the SI and the U.S. Standard systems
of measurement.
7. An Appendix with conversion factors, rules of safety and
procedures, overview of SHRP SUPERPAVE, explanation of
asphalt emulsions, and additional data sheets on
single-sided pages.


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