Mineral bitumen exporter to use in road construction

General description of gilsonite in construction

Gilsonite is natural asphalt, is used as a bitumen binder modifier with various properties of binder that is modified only by Gilsonite are common, we investigate the effect of combining bitumen and Gilsonite in the same base binder. Adding 13~14% gilsonite increase performance of asphalt. Also, the viscosity of modified binders by Gilsonite is always high. We are suggesting iran Gilsonite can be used as an alternative modifier to reduce the cost of asphalt mixture production and compaction in the field.

Gilsonite in construction

Detail of Gilsonite mixture in asphalt

It has been discovered that asphalt cement can be toughened with Gilsonite and thinned with a reactive oil. Reactive oil is an oil that contains a high content of unsaturated fatty acids. By using a reactive oil, the oil would cure or react after application of the asphalt cement to the highway, thereby allowing for a lower viscosity application by curing later to prevent rutting.

The preferred natural asphalt is asphaltite such as Gilsonite is preferably one having a melting or softening point near about 300° F. so that it is more easily softened and blended with the petroleum asphalt at such temperatures.

How to mix Gilsonite in asphalt:

Gilsonite should be added slowly at the vortex. Provisions should be made to recirculate the hot bitumen through recirculation piping. The most important item is that the minimum temperature should be about 170 to 175° C. Anything significantly less than this will extend mixing time. For typical (5-10%) substitution concentrations, 2-4 hours of mixing after addition is completed should be sufficient. For master batch concentrations (over 10% mineral bitumen) recirculation overnight is preferred.

Packing of Gilsonite natural asphalt lump and powder form micronized

Gilsonite in lump form like rock packed in 500~1000kg jumbo bag

Gilsonite 200 mesh packed in 500~1000kg jumbo bag

Gilsonite  300 mesh packed in 500~1000kg jumbo bag

Gilsonite  30-40 mesh packed in 500~1000kg jumbo bag

Gilsonite  100 mesh packed in 500~1000kg jumbo bag

Gilsonite  300 mesh packed in 25kg pp bag

Gilsonite  200 mesh packed 25kg multi paper bag

Gilsonite  200 mesh packed 50lbs multi paper bag

Gilsonite  30-40 mesh packed pp bag on pallet

Bulk on vessel

Specification of Gilsonite 

TEST METHOD

RESULT

TEST

NO

ASTM-D3174

5

ASH CONTENT,WT%

1

ASTM-D3173

1%

MOISTURE CONTENT,WT%

2

ASTM-D3175

63

VOLATILE MATTER,WT%

3

ASTM-D4

80

SOLUBILITY IS CS2,WT%

5

ASTM-D3289

1.11

SPECIFIC GRAVITY @25 C

6

ASTM-D3279

79

NORMAL HEPTHAN INSOLUBLES,WT%

7

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Black

COLOR IS MASS

8

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Black

COLOR IN STREAK OR POWDER

9

ASTM-D36

185

SOFTENING POINT,C

10

ASTM-D5

0

PENETRATION @25C

11

ELEMENT ANALYSIS

ASTM-D5291

84

CARBON,WT%

1

ASTM-D5291

7.1

HYDROGEN,WT%

2

ASTM-D5291

3.67

NITROGEN,WT%

3

ASTM-D5291

3.1

OXYGEN,WT%

4

LECO(S)ANALYZER

2

SULPHURE,WT%

5

Our approvals

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