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Cutback Bitumen ( Liquid Bitumen ) is Bitumen that is dissolved in a solvent . Typical solvents include Naptha, gasoline and kerosene, white spirit etc. The type of solvent controls the curing time while the amount determines the viscosity of the Cutback Bitumen.

The advantage Cutbacks have over Emulsions is a much higher residual Bitumen percent, typically over 80% compares with over 40-65% for Bitumen emulsions. The result is more Bitumen left on the roadway after curing, for the same volume of binder applied.

Application
Cutback bitumen’s suitable for primer sealing can also be used in the manufacture ofpre-mix asphalt, which is used in patch repairs.Cutback bitumen’s are used extensively in sprayed sealingapplications, particularly in cooler weather where theyprovide improved initial stone retention due to their

Price of Product (USD) : 503

Product Origin : Merco W.L.L Bahrain

Key Specifications / Special Features :

Cutback Classification

Cutbacks are divided into two classifications, Rapid-Curing (RC) and Medium-Curing (MC) depending on the solvent used. They are further defined by a number which indicates the minimum kinematic viscosity (fluidity) of the cutback.

Grades & Properties

Grade Curing Speed Viscosity Penetration of Residue
MC 30 Medium 30-60 120- 150
MC 70 Medium 70-140 120- 150
MC 250 Medium 250- 500 120- 150
MC 800 Medium 800- 1600 120- 150
MC 3000 Medium 3000- 6000 120- 150
RC 70 Rapid 70-140 80- 120
RC 250 Rapid 250-500 80- 120
RC 800 Rapid 800- 1600 80- 120
RC 3000 Rapid 3000- 6000 80- 120


Minimum Order size and packgaing detail

Palletizing is required for Cutback Bitumen & Emulsions -200kg drums shall be secured as 4 drums per pallet.

Information on basic physical and chemical properties

a) AppearanceLight yellow formed solid
b) OdourFaint but characteristic rotten egg
c) Odour Threshold0.47ppb hydrogen sulphide
d) pHNot applicable
e) Melting point/freezing point118-120°C
f) Initial boiling point and boiling range-444.7°C
g) Flash point168-207°C (molten sulfur)
h) Evaporation rateNo data available.
i) Flammability (solid, gas)Combustible solid
j) Upper/lower flammability or explosive limitsUpper explosion limit 35g/m3 % sulfur dust in air Lower explosion limit 1400g/m3 % sulfur dust in air
k) Vapour pressureNot applicable
l) Vapour densityNot applicable
m) Relative density1.92-2.07
n) Water solubilityInsoluble in water
o) Partition coefficient: (n- octanol/water)No data available
p) Auto-ignition temperature 248-161°C (molten sulfur), 190°C (sulfur dust cloud)
q) Decomposition temperatureNo data available
r) Viscosity 8 mm2/s at 140°C (molten sulfur)
s) Explosive properties None NONE
t) Oxidizing properties None NONE


Price of Product (USD) : 67

Product Origin : Merco W.L.L Bahrain

Bitumen emulsion is a mixture of fine droplets of bitumen and water. But as the bitumen is a petroleum product it doesn’t mix with water and as it is sticky in nature, it doesn’t easily gets disintegrated into fine droplets. To overcome this problem an emulsifier is used. Emulsifier can be defined as a surface-active agent. Emulsifier keeps the bitumen in its fine droplet state by disallowing it to mix with other droplets. As the droplets are very fine they suspend in water.

Therefore, bitumen emulsion is a dispersed liquid consisting of three products, i.e. water, bitumen and emulsion.

Bitumen emulsion is a mixture of fine droplets of bitumen and water. But as the bitumen is a petroleum product it doesn’t mix with water and as it is sticky in nature, it doesn’t easily gets disintegrated into fine droplets. To overcome this problem an emulsifier is used. Emulsifier can be defined as a surface-active agent. Emulsifier keeps the bitumen in its fine droplet state by disallowing it to mix with other droplets. As the droplets are very fine they suspend in water.

Uses
Cationic emulsions may be used at ambient temperatures with aggregates, which need not be completely dry. Emulsions are less hazardous to use and can be applied in a wider range of conditions. Advantages
a) Cationic emulsions may be used at ambient temperatures with aggregates, which need not be completely dry.
b) Lower costs are incurred due to a considerable saving on fuel for heating purposes.

c) Operating at lower temperatures for cold mixing gives a greater margin of safety, even though these emulsions may contain fluxing oil.
d) Not only may cold mix be stockpiled for long periods, but it may also be packaged in small containers and stored. This facilitates the treatment of very small areas quickly, cleanly and economically. Disadvantages
A regular water supply is required and this can be a great problem in very hot countries, where water can be in very short supply.


Price of Product (USD) : 432

Product Origin : Merco W.L.L Bahrain

Key Specifications / Special Features :

Type Viscosity  @25°C Penetration & Solubility Residue
Tack Coat K1- 40 25 Max 60- 200 & (97.5) 38%
Rapid Setting RS-1K 20-50 60- 200 & (97.5) 50%
Rapid Setting K1-60 -NA & (97.5) 57%
Rapid Setting CRS-160- 200 & (97.5) 60%
Rapid Setting CRS-2-60- 200 & (97.5) 65%
Rapid Setting K1-70NA & (97.5) 67%
Medium Setting K2-NA & (97.5)57%
Medium Settng CMS 2-60- 200 & (97.5) 65%
Slow Setting K3 20- 100 60- 200 & (97.5) 56%
Slow Setting CSS-1 20- 100 60- 200 & (97.5) 57%


Minimum Order size and packgaing detail

16.00(=/-3%) Metric tons per 20 Foot Container. 200 kgs(+/-3kgs) in one drum.Total no of drums in 1 container 80

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