Product Name: 17/23 Asphalt Cement
Origin: Produced by blending refinery bitumen, a heavy oil residue from the refining of crude petroleum, with naturally occurring Trinidad Lake Asphalt.

Other Names: Trinidad Modified Asphalt (TMA), Trinidad Lake Asphalt Cement, Modified Asphalt, 17/23 Pen. Asphalt Cement.

Composition: Homogenous blend of 60-70% Trinidad Lake Asphalt and 30-40% Refinery Bitumen

Approximate Percentages of Components:

Bitumen Content 70 – 76%
Mineral Matter 17 – 25%
Water of Hydration of Minerals 2.6 – 3.0%
Other Organic matter 1.9 – 2.2%

2. Physical and Chemical Properties

Appearance: A semi-solid, brown to black material

Properties: Penetration (25 oC) 17 – 23
Specific Gravity (25 oC) 1.16 – 1.25g/cm3
Softening Point (R & B) 55 – 61oC