VSS ASPHALT (BITUMEN) TECHNOLOGIES


Back to VSS Asphalt (Bitumen) Technologies Main Page

This is a graphics-heavy page. Thank you for your patience as it loads.

• VSS Asphalt Technologies are the International arm of Basic Resources INC
• The company has been in business over 80 years
• Contractors
• Manufacturers of emulsions
• Suppliers of Raw materials
• Manufacturers of Equipment
• Chemists
• Engineers
• Consultants

• Equipment
• Know how
• Technology transfer and training
• Raw Materials- Specialty Chemicals
• Technical Support and Service
• Research and Development

• Slurry and Microsurfacing
• Chip sealing
• Hot Mix
• Asphalt rubber and polymer asphalt

• Number one on West Coast
• 4 plants
• Experts in manufacture, transportation and application.

• Slurry/Microsurfacing
• Emulsion Plants
• Polymer asphalt Plants
• Asphalt Rubber Blenders and application Equipment
• Injection patchers
• Full Layout and Turnkey

• Power
• Capacity
• Production Rate
• Technology

• Continuous OR Batch Run.
• Can be used for BIG jobs
• Can be used for small jobs
• Powerful
• Maneuverable
• 1 tonne plus per minute
• 2 man operation

• Modified Sprayers for AR applications and specialty emulsions
• High Output
• Chip spreaders

• Tanks
• Hot Oil Heaters
• Load Out
• Drumming
• Pumps

• Technology
• Experience
• Application
• Raw materials

• Weight Hoppers
• Heater Blender
• Reaction Vessels
• Asphalt Storage
• Complete systems for 20 and 65 T.p.h of binder

• Eastern USA- Cold climate
• Canada : British Colombia/Alberta- very Cold Climate
• Western USA- Cold and Hot
• Asia- Hot Humid
• Portugal – Cold and Hot

• Roofing
• Patching
• Sealing
• Slurry/Micro
• Stabilization
• Chip Seal
• Tack Coats
• Primes
• Rejuvenation
• All applications

• SBS
• SEBS
• EVA
• EMA
• Crumb Rubber

• Adhesion additives
• Bitumen modifiers
• Extender oils
• Emulsion modifiers

• Full Technical Support
• Mix Design
• Lab equipment
• Raw Material assessment and specification
• Formulation and product Design
• Additives

• Asphalt Chemistry and Refining Technology
• Emulsion Chemistry<
• Emulsifier Chemistry
• Aggregate Chemistry
• Mix Design Slurry and Microsurfacing
• Plant Design
• Mix Design Hot mix- conventional SHRP
• Refinery Project Engineering
• Pavement Design

• Seminars- workshops
• All Asphalt products
• Pavement Design
• On site trouble shooting
• Technology Transfer<
• Applications and technology training

• Preventive Maintenance (Proactive)
• Corrective Maintenance (Reactive)

• An Emulsion that contains polymer, rejuvenating oil and bitumen
• Sprayed onto cracked surfaces and choked with sand or cinders
• Penetrates and softens hardened bitumen
• Can be used in cold conditions

• Binder is sprayed and scrubbed into the pavement with a broom or squeegee
• Either hot asphalt Rubber binder or emulsion rejuvenating binder may be used
• The surface is spread with sand, cinders or aggregate and rolled

Slurry Surfacing

• Slurry Seal
• Microsurfacing
• Colored Slurry

• Slurry surfacing is a mixture of graded aggregates, a polymer modified emulsion and additives
• It is applied using a special paver mounted on a truck or self propelled
  Components are metered into a pugmill, mixed and spread on the surface
• Slurry is 1-1.5 stone thick and is used as a surface, Microsurfacing is high stability so may be spread in multi-layers and provides a hard wearing surface or rut filler.
• Slurry seal cures to traffic in 1-3 hrs, Microsurfacing break and cure to traffic ability in 15-45 minutes

• Poor Surface Preparation
• Poor materials selection
• Incomplete design
• Failing to design for climate
• Poor application technique and materials handling

• Seals minor cracks
• Seals sound but oxidized pavements
• Restores surface texture and skid resistance
• Corrects raveling
• Reduces noise
• Allows overlays where weight restrictions apply
• Improves ride and profile

aged pavement	raveling pavement
skid resistance on PCC	smooth low noise, water proof

• Restores surface profile
• Fills ruts
• Can be applied at night
• Suitable for low or very high traffic
• Suitable for all temperature ranges

Cohesion	Abrasion
Compatibility	Deformation and bleeding resistance

• USA Govt/ISSA study on new methods for greater predictability of performance
• 4 year study
• Principal Investigators : Jim Moulthrup, Glynn Holleran
• Using all International sources and climates

• Special mixes
• Rolling
• Used for poor weather to promote coalescence and strength
• Used in Airports
• Gives an even surface
• Seals poor aggregates

• Formulation
• Equipment
• Design and Application
• Performance

• Blend Of Bitumen
• Ground tyre Rubber
• Compatibilising Oils
• Additives
• A True Polymer Modified Bitumen

• Mix Of SBR
• Natural Rubber
• SBS
• Oils
• Carbon Black
• Antioxidants

No Extender oil 200C 1 hr

Extender Oil 3%

• Crack Sealers
• Special Patching materials
• Chip Seals as SAM and SAMI
• Hot Mix overlays up to 50% thinner than conventional BUT also solving cracking especially as Gap and open graded mixes
• On PCC or Asphalt

• Application rate 1.5-1.8 times conventional binder
• Highly Durable
• Bridge cracks
• Life times 15 years and higher

Crack Relief Seal 5 years

• Highly flexible
• Can be applied at 50% of the thickness of conventional hot mix
• Will bridge cracks
• Can be GG and OG for for drainage and flexibility

Mix Design and Construction

• Higher mix temperature
• 20% - 40% higher binder content
• Higher compaction temperature
• No Rubber Tired finish rolling
• Sand Spread

• Even but cracked pavements
• AR chip Seal with overlay of slurry surfacing or HMA
• Called Asphalt Rubber Cape Seals or 2 layer systems
• Life 8 years plus

Above snow line

High Desert/Snow area

• For extreme cracking cases with uneven surfaces
• Lifetimes 10 years and upwards

• AR is used in Scrub seals
• For a long lasting crack relief

• Higher Rubber % equals better fatigue and crack resistance
• Rubber is cheaper
• Blend on site preferred for AR
• Higher Viscosity = higher durability and higher binder application.

• High Bitumen Content
• Can be Polymer Modified
• VSS HBCE® emulsions are high performance they cure faster and adhere to almost all stone types
• Works to 4C pavement
• Improved stone retention

   

• Equipment
• Materials
• Technology
• Full technology Transfer and Training

• Renewal of base by full depth reclamation with emulsion or foamed bitumen
• Increases Load Bearing in Base
• Reuses the bitumen and aggregate
• Slurry Surfacing, chip seal or HMA seals and protects the surface
• Lasts 7-8 years between applications. Base should last 20 years plus

• Low Emissions Of Hydrocarbons and Dust
• Energy Saving
• Lower Cost Mix Plants
• Easier Transport and Storage
• No Aging In manufacture
• Can use polymers and and hydraulic binders

• Light Duty Roads
• Seals and prevents dust
• Bitumen soil stabilization and or a prime
• Depending on traffic and drainage can last many years

• Geotextile will improve drainage
• Geotextile will retard cracks for a short time
• Geotextile will allow seals over subgrades directly

• VSS Styraflex ERA®
• Can be used in Scrub Seals
• Can be used as a rejuvenation Seal
• Can be used as fog Seal

• Poor quality bitumen may be upgraded by use of additives
• Additives to improve emulsability
• Additives to improve adhesion
• Roadchem® AS5, AS6, AS7, Roadchem 701 will improve emulsability

Coating 40% after boiling test

Coating 100% after boiling Test

• VSS AW Patch ® can be used to patch under all conditions
• Snow
• Rain
• Wet Potholes
• VSS can supply binder concentrate for making mix locally

• Special Emulsions for Priming granular pavements- Emulprime®
• Specialty tack Coat for UT Asphalt