Shell GTL Asphalt Additives

Title = Shell GTL Saraphalt Product Introduction Video Transcript

Duration = 03:08 Minutes

Description:

{Learn how Shell GTL Saraphalt improved asphalt performance with lower emissions and energy consumption}

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Shell GTL Saraphalt

Performance Additives for Asphalt Mixes

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Disclaimer:

The data shown is according to industry standard and Shell proprietary tests. They are compared to typical asphalt binders and based on standard test methods.

Actual effects and benefits may vary according to asphalt formulation, equipment type, conditions, and measurement uncertainty.

No guarantees or warranties provided.

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Fast, upbeat music

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{Illustration showing process of laying tarmac on a new road}

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{Close up image outside the Shell MDS (Malaysia) Sendrian Berhad building. Image of GTL plant.}

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Shell pioneered the Fischer-Tropsch Gas-To-Liquids (GTL) technology in its first commercial GTL plant of its kind in Bintulu, Malaysia, achieving commercial GTL production in 1993.

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What is the process behind it?

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{Animated process of the three stages}

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Stage 1: Gasification

Methane (Natural Gas)

Oxygen (From Air)

Hydrogen – Syngas

Carbon Monoxide

Stage 2: Synthesis

Fischer-Tropsch Syn Crude + Water

Stage 3: Hydro-cracking & Separation

Hydro cracking

Separation

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{Image of workers smoothing tarmac}

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Shell GTL Saraphalt

A versatile additive polymerized from natural gas via Fischer-Tropsch synthesis, suitable for high quality warm mix asphalt applications.

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{Image of road roller smoothing tarmac. Four icons; Road roller, Road, Hammer and NTPEP tested.}

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Shell GTL Saraphalt

Better workability

Improved stability

Higher durability

Tested for application on highway and bridge construction

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{Birds eye view of windy road going through a forest. Two icons; Low CO2 and worker}

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Shell GTL Saraphalt

Lower CO2 emissions and energy consumption

Improved working conditions with extended paving season

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{Birds eye view of motorway surrounded by a forest}

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Industry comparison

Results have shown that with the addition of 2% Shell GTL Saraphalt to base asphalt binders, improvements from standard bitumen can be seen in certain criteria and are comparable with alternative additives.

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{Image of digger loading stones into the back of a truck. Graph showing reduction in temperate}

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Improved pumpability, mixability and workability of asphalts

Reduces viscosity of asphalt binders especially at 135°C, the typical production or construction temperature.

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{Close up image or a motorway. Two graphs sowing Softening Point and Penetration Rolling Thin Film Oven Testing, RTFOT (dmm)}

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Higher resistance to permanent deformation

Lower penetration and improved Softening Point by more than 30%.

Softening Point (°C)

Standard Bitumen = 48.5

Standard Bitumen with Shell GTL Saraphalt = 64.5

Standard Bitumen with alternative additives = 61.5

Penetration Rolling Thin Film Oven Testing, RTFOT (dmm)

Standard Bitumen = 64

Standard Bitumen with Shell GTL Saraphalt = 43

Standard Bitumen with alternative additives = 48

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{Close up image of Road roller. Two graphs; High Temperature Performance Grade (PG), Unaged Material (°C)}

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Increased maximum pavement temperature and rutting resistance

Broadening Performance Grade (PG) range by increasing useful temperature interval of asphalt up to +13°C additional of maximum pavement temperature.

High Temperature Performance Grade (PG), Unaged Material (°C)

Standard Bitumen = 59.8

Standard Bitumen with Shell GTL Saraphalt = 73.3

Standard Bitumen with alternative additives = 70.8

Rutting Depth (mm)

Standard Bitumen = 5.84

Standard Bitumen with Shell GTL Saraphalt = 2.81

Standard Bitumen with alternative additives = 4.33

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{Image of puddle of fuel on pavement. Graph showing Fuel Resistance (wt%)}

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Better fuel resistance

No significant weight changes in Fuel Resistance test, improving asphalt resistance against damage on fuel contact.

Fuel Resistance (wt%)

Standard Bitumen = 1.37

Standard Bitumen with Shell GTL Saraphalt = 0.00

Standard Bitumen with alternative additives = 2.00

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{Up close image of crack in the road. Graph of G-R aging index}

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Higher resistance to oxidation aging

Supported by the G-R (Glover-Rowe) parameter that considers both binder stiffness and embrittlement, indicating cracking potential at intermediate temperature,

G-R aging index

Standard Bitumen with Shell GTL Saraphalt = 47.2

Standard Bitumen with alternative additives = 262

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{Image of straight road surrounded by the forest}

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Improved fatigue resistance

Improved base asphalt binder’s fatigue resistance at both 2.5% and 5.0% strain levels.

Pressure Again Vessel (PAV) Long-term Aging

Standard Bitumen with Shell GTL Saraphalt = 99,143 & 10,026

Standard Bitumen with alternative additives = 48,284 & 5,428

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{Close up of red vehicle driving through a puddle}

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Enhances tensile strength ration (TSR)

Exceeds minimum requirements of ASTMD4867, showing better strength and adherence at different cracking or fatigue temperatures due to higher resistance and less susceptible to moisture.

Tensile Strength Ratio, TSR (%)

Standard Bitumen = 94

Standard Bitumen with Shell GTL Saraphalt = 97

Standard Bitumen with alternative additives = 84

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{Illustration of workers finishing laying the new road}

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Shell GTL Saraphalt