TLA COMPOSITION
AND PHYSICAL CHARACTERISTICS
Trinidad
Lake Asphalt consists of a mixture of Bitumen and Minerals broken
down as follows :
The
Bitumen component is made up of:
The
mineral component of TLA is made up of particles of various grades as
follows:
-
Passing
200 Mesh - 0.08 mm : 89.8 %
-
Passing
100 Mesh - 0.17 mm : 8.0 %
-
Passing
80 Mesh - 0.20mm : 2.2%
-
Close
to 40% of the mineral matter is less than 1 micron in size and is
very finely divided
PROPERTIES
OF TLA
| Specific
gravity/density 25 degree Celsius
|
1.39 - 1.44
|
| Softening
Point (R&B) degree Celsius
|
93 - 99
degrees Celsius
|
| Penetration
|
0 - 4
|
| Loss on
Heating for 5hrs.@163 degrees Celsius
|
2.0 % max.
|
| Solubility in
Trichloroethylene %
|
52 - 55 %
|
| Ash Mass %
|
35 - 39 %
|
These
properties collectively provide high mix stability, resistance to
cracking, excellent durability, and unparalleled demonstrated
performance in the construction of cost effective, long life pavements.
END
