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Bitumen 35/50

Bitumen 35/50 is a premium-grade paving bitumen widely used in various construction and industrial applications due to its exceptional properties and versatile performance. Classified as a penetration-grade bitumen, it has a penetration range of 35 to 50 dmm (tenths of a millimeter), making it a highly durable and semi-hard material ideal for heavy-duty asphalt pavements and road construction projects. This grade of bitumen exhibits excellent binding and adhesive qualities, ensuring a strong and stable mix when combined with aggregates. It is especially suited for regions with high traffic loads or where extreme climatic conditions demand superior resistance to deformation and cracking. Bitumen 35/50 also demonstrates excellent water-resistant and weatherproofing properties, which contribute to the longevity of road surfaces by preventing water infiltration and reducing the risk of structural damage. Beyond road construction, it is used in industrial applications such as roofing, waterproofing, and insulation, where its thermal stability and flexibility at different temperatures are highly valued. Its high softening point and low penetration rate make it a reliable choice for projects requiring durable and long-lasting performance. Produced and refined through advanced processes to meet stringent international standards, Bitumen 35/50 is an indispensable material for infrastructure development and a trusted solution for engineers and builders worldwide.

Bitumen 85/100
Characteristics Unit Specification Test Method
Penetration @ 25 °C 0.1 mm 60-70 ASTM D-5
Specific gravity @ 25 °C gr/cm3 1.01-1.060 ASTM D-70
Softening Point °C 46-56 ASTM D-36
Ductility @ 25 °C Cm 100 Min ASTM D-113
Loss on heating % wt 0.2 Max ASTM D-6
Drop in penetration after heating % 20 Max ASTM D-6 & D-5
Flash Point °C 250 Min ASTM D-92
Solubility in CS2 % wt 99.0 Min ASTM D-4
Organic matter insoluble in CS2 % wt 0.2 Max ASTM D-4
Viscosity @ 60 °C p 2000±400 ASTM D-2171
Spot test – Negative *A.A.S.H.O.T.102
Different bitumen penetration Grades
Characteristics Unit 30/40 50/70 100/120 160/220 200/300 Test Method
Specific gravity @ 25 °C gr/cm3 1.01-1.06 1.01-1.06 1.01-1.04 1.01-1.06 1.01±0.05 ASTM D-70
Penetration @ 25 °C 0.1 mm 30-40 50-70 100-120 160-220 200-300 ASTM D-5
Softening Point (R &B) °C 55-63 46-54 42-49 35-43 34-41 ASTM D-36
Softening Point (R &B) °C 55-63 46-54 42-49 35-43 34-41 ASTM D-36
Ductility @ 25 °C Cm 100 100 100 100 100 ASTM D-113
Loss on heating, Max % wt 0.2 0.2 0.2 0.2 1.3 ASTM D-6
Drop in Penetration after heating, Max % 20 20 20 20 - ASTM D-6 & D-5
Flash Point. Min °C 250 230 250 220 177 ASTM D-92
Solubility in CS2 % wt 99.5 99 99.5 99 99 ASTM D-4
Spot test - Negative Negative Negative Negative Negative *A.A.S.H.O.T.102
Oxidized Bitumen
Characteristics Unit 85/25 95/25 90/15 9115/15 Test Method
Penetration @ 25°C, 100 gm, 5 Seconds 0.1 mm 20/30 25/30 10/20 10/20 ASTM D-5
Specific gravity @25°C gr/cm³ 1.01/1.05 1.01/1.05 1.01/1.05 1.01/1.05 ASTM D-70
Softening Point (R&B) °C 80/90 90/100 85/95 110/120 ASTM D-36
Loss on heating, Max % wt 0.2 0.2 0.2 Max 0.2 0.2
Flash Point (Cleveland Open Cup), Min °C 260 260 225 260 ASTM D 92
Performance Grades Bitumen (PG)
High Temperature Performance Low Temperature Performance
PG 46 -46, -40, -34
PG 52 -46, -40, -34, -28, -22, -16, -10
PG 58 -40, -34, -28, -22, -16, -10
PG 64 -40, -34, -28, -22, -16, -10
PG 70 -40, -34, -28, -22, -16, -10
PG 76 -34, -28, -22, -16, -10
PG 82 -34, -28, -22, -16, -10
Viscosity Grades Bitumen (VG)
Characteristics Unit VG 40 VG 30 VG 20 VG 10 Test Method
Absolute Viscosity @ 60°C, Poises °C Min. 2200 Min. 2400 Min. 1600 Min. 800 IS 1206 (Part 2)
Kinematic Viscosity @ 135°C cSt Min. 400 Min. 350 Min. 300 Min. 250 IS 1206 (Part 3)
Softening Point (R&B) °C Min. 50 Min. 47 Min. 45 Min. 40 IS 1205
Flash Point (Cleveland Open Cup) °C Min. 220 Min. 220 Min. 220 Min. 220 IS 1209
Solubility in trichloroethylene % Min. 99 Min. 99 Min. 99 Min. 99 IS 1206
Penetration @ 25°C (100 grams, 5 seconds) 0.1 mm 40-60 50-70 60-80 80-100 IS 1203
Test on residue from thin film oven tests/RTFOT
(i) Viscosity ratio @ 60°C °C Max. 4.0 Max. 4.0 Max. 4.0 Max. 4.0 IS 1206 (Part 2)
(ii) Ductility @ 25°C (Thin film oven test) Cm Min. 25 Min. 40 Min. 50 Min. 75 IS 1208
Specification Gravity @ 27/27 °C Min. 0.99 Min. 0.99 Min. 0.99 Min. 0.99 IS 1202
Conforms to BIS (IS 73:2006) Specifications
Dhaduk Petrochemicals Cutback Bitumen Grades Slow Curing (SC)
Characteristics Unit SC70 SC250 SC800 SC3000 Test Method
Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 70 140 250 500 800 1600 3000 6000 ASTM D-2170
Flash Point °C 66 - 79 - 93 - 107 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 40 - 60 - 70 - 80 - ASTM D-5
Distillate, volume percent of total distillate to 360°C °C 10 30 4 20 2 12 - 5 ASTM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99 - 99 - 99 - 99 - ASTM D-2042
Water, Max %VOL - 0.5 - 0.5 - 0.5 - 0.5 ASTM D-95
Cutback Bitumen Grades Medium Curing (MC)
Characteristics Unit Test Method
MC30 MC70 MC250 MC800 MC3000
Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 30 60 70 140 250 500 800 1600 3000 6000 ASTM D-2170
Flash Point, Min °C 38 - 38 - 66 - 66 - 66 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 120 250 120 250 120 250 120 250 120 250 ASTM D-5
Distillate Test: Distillate, volume percent of total distillate to 360 °C ASTM D-402
To 225 °C °C - 35 - 25 - 20 - - - -
To 260 °C °C 30 75 10 70 5 55 - 40 - 15
To 316 °C °C 75 95 65 93 60 90 45 85 15 75
Residue from distillation to 360 °C, Min %VOL 50 - 55 - 67 - 75 - 80 - STM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99.0 - 99.0 - 99.0 - 99.0 - 99.0 - ASTM D-4
Water, Max %VOL - 0.2 - 0.2 - 0.2 - 0.2 - 0.2 ASTM D-95
Cut back Bitumen Grades Rapid Curing (RC)
Characteristics Unit Specification Test Method
RC 30 RC 70 RC 250 RC 800 RC 3000
Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 30 60 70 140 250 300 800 1600 3000 6000 ASTM D-2170
Flash Point °C - - - - 27 - 27 - 27 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 80 120 80 120 80 120 80 120 80 120 ASTM D-5
Residue from distillation to 360 °C, Min ASTM D-402
To 225 °C °C 55 - 50 - 35 - 15 - - -
To 260 °C °C 75 - 70 - 60 - 45 - 25 -
To 316 °C °C 90 - 85 - 80 - 75 - 70 -
Residue from distillation to 360 °C, Min %VOL 50 - 55 - 65 - 75 - 80 - ASTM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99 - 99 - 99 - 99 - 99 - ASTM D-2042
Water, Max %VOL - 0.2 - 0.2 - 0.2 - 0.2 - 0.2 ASTM D-95
Cut back Bitumen Grades Rapid Curing (RC)
Dhaduk Petrochemicals Bitumen Emulsion Specification of Cationic Bitumen Emulsions
Quick Setting Rapid Setting Medium Setting Slow Setting
CQS 1h CRS 1 CRS 2 CMS 2 CMS 2h CSS 1 CSS 1h
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Viscosity, Say bolt Furol @ 25°C SFs 20 100 - - - - - - - - 20 100 20 100
Viscosity, Say bolt Furol @ 25°C SFs - - 20 100 100 400 50 450 50 450 - - - -
Storage Stability test, 24-h, % A - 1 - 1 - 1 - 1 - 1 - 1 - 1
Demulsibility, 35 mL, 0.8 % Dioctyl sodium - - 40 - 40 - - - - - - - - -
Particle charge test Positive Positive Positive Positive
Sieve test, % A - 0.1 - 0.1 - 0.1 - 0.1 - 0.1 - 0.1 - 0.1
Cement Mixing test, % - N/A - - - - - - - - 2 - - 2
Coating ability and water resistance:
Coating, dry aggregate - - - - - - good - good - - - - -
Coating, after spraying - - - - - - fair - fair - - - - -
Coating, wet aggregate - - - - - - fair - fair - - - - -
Coating, after spraying - - - - - - fair - fair - - - - -
Oil Distillate, by volume of emulsion, % - - - 3 - 3 - 12 - 12 - - - -
Residue % 57 - 60 - 65 - 65 - 65 - 57 - 57 -
Tests on residue from distillation test:
Penetration @ 25°C, 100 grams, 5 Second 40 30 100 250 100 250 100 250 40 90 100 250 40 90
Ductility, 25°C 5 Cm/Min, Cm 40 - 40 - 40 - 40 - 40 - 40 - 40 -
Solubility in trichloroethylene, % 97.5 - 97.5 - 97.5 - 97.5 - 97.5 - 97.5 - 97.5 -
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