Trinidad and Tobago natural lake asphalt TLA

Product Overview

Description

Origin: Naturally Occurring

 

Common Names: Dried Asphalt (DA), Trinidad Refined Asphalt (Epure)

 

Chemical Composition: A stable colloidal mix of bituminous compounds and mineral
matter.

 

 

 

Approximate Percentages of Components:

 

Bitumen Content	53 - 55%
Mineral Matter	35– 37.5%
Water of Hydration of Minerals	4.3%
Other Organic matter	3.2%

 

 

 

Physical and Chemical Properties:

 

Appearance: Black or Dull Grey (Solid appearance)

 

Behaviour: Trinidad Lake Asphalt (TLA) is considered to be a thermoplastic material. At ambient temperatures, it is actually a semi-solid or can be classified as a gel-sol but appears solid at first glance. If left in the open, it will slowly change shape to suit area in which it is kept.

 

Properties:

 

	Test Methods	Values
Penetration (25 oC)	ASTM D5	0 - 5
Specific Gravity	ASTM D70	1.3 – 1.5g/cm3
Softening Point (RB)	ASTM D36	89 - 99oC

 

 

 

Chemical Data: Bitumen content comprises mainly:

 

n  Saturated polycyclic compounds containing oxygen, sulphur and clay minerals of general chemical formula – CnH2n+2.

 

n  Polar Aromatic and napthenic compounds of general chemical formula - CnH2n– 2. Also contained are aromatic compounds of formula CnH2n and aliphatic compounds.

 

 

Mineral matter comprises – Silica, Alumina, Ferric Oxide and other
trace compounds.

ORIENTAL YUHONG Signed contract with TRINIDAD AND TOBAGO (1978) LIMITED about joint company to sell lake asphalt in Asia