Product Details


Sealer/Binder Emulsion

GSB-88® is ASI's flagship product. This environmentally-friendly and versatile emulsion enhances, seals, and extends the life of asphalt at a low cost per square yard. Formulated in 1988, it is applied on pavements ranging from high-speed state highways to parking lots, city streets, county roads, and more than 500 military & civil airport runways - from Alaska to Florida and Maine to California. Our Modified Sealer Binder is a unique, naturally-occurring asphalt ore found in Utah that lasts longer and requires less refining than traditional petroleum oils.


GSB-88® is the only product in the asphalt industry to undergo rigorous independent third-party environmental testing. After an intensive 2011 Life Cycle Assessment by the Institute for Environmental Research & Education (IERE), GSB-88® earned an Environmental Product Declaration (EPD) attesting to the significant environmental benefits of its use in preserving pavement. GSB-88® has also been honored with IERE, Earthsure, and GreenCircle® Certifications, recognizing that one application approx. every five years can significantly extend the life of asphalt and help reduce global warming, acidification, ecotoxicity, eutrophication and smog by nearly 50% when compared to reconstruction.

No Retrofitting RequiredNo Retrofitting Required

GSB-88® is easily applied using standard asphalt distributors and spray equipment. It cures in just a few hours, and is odorless, non-toxic, and non-carcinogenic, so you can preserve your investment and get back to business quickly.

GreenCircle-MarkGreen Circle Certified

By using GSB-88® your project will show great concern for our environment. Reapplication of GSB-88® approximately every five years can double the life of pavement, in turn reducing the environmental impacts by eliminating the need to resurface. Green Circle Certified explained more under the Environmental tab.

Product Description:

GSB-88® Emulsified Sealer/Binder is a chemically engineered asphalt preservation product comprised of a cationic emulsion with our Modified Sealer Binder, rejuvenators and specially selected plasticizers. This chemical colloid stabilized emulsion has been specifically formulated for sealing asphalt parking lots, city streets, roads, highways, airport aprons, taxiways, and runways. GSB-88® provides a durable yet flexible seal coat, while special plasticizers and oils penetrate the service binders. The result is an emulsified sealer/binder that restores vital components to asphalt which are lost during the aging and oxidation process, providing a long wearing anti-oxidative seal. GSB-88® also helps to rebind the surface and thereby mitigate raveling issues. It dries to an absolute black color, which beautifies the pavement surface and provides tangible cosmetic benefit. Furthermore, GSB-88® has achieved Green Circle Certification®, which compares the lifespan of a standard asphalt road without GSB-88® treatments and a road with GSB-88® treatments. (Reference:  Environmental Product Declaration)


GSB-88® is available in either a concentrate or ready to use form. The concentrate form allows large shipments via tank truck, ISO container, and flextank or railroad tank car. The concentrate form must be diluted with hot water prior to application.

Specifications for GSB-88® Concentrate are as follows:

Saybolt Viscosity at 77°F (25°C) ASTM D-244 - - - - 20 to 100 seconds
Residue by Distillation, or Evaporation - - - - 57% min.
Sieve test ASTM D-244 (one tenths of one %) - - - - 0.1%
5 day Settlement test ASTM D-244 - - - - 5.0% max.
Particle charge (1) ASTM D-244 - - - - Positive

Specifications for GSB-88® Ready-to-Apply


Saybolt Viscosity at 77°F (25°C) ASTM D-244 - - - - 10 to 50 sec.
Residue by Distillation, or Evaporation - - - - 28.5  minimum
Pumping Stability test (2) - - - - Pass


Saybolt Viscosity at 77°F (25°C) ASTM D-244 - - - - 10 to 50 sec.
Residue by Distillation, or Evaporation - - - - 37.5  minimum
Pumping Stability test (2) - - - - Pass

Tests on Residue from Distillation, or Evaporation

Viscosity astm 275°F (135°C) ASTM D-4402 - - - - 1750 cts max.
Solubility in 1,1,1 trichloroethylene ASTM D-2042 - - - - 97.5% min.
Penetration ASTM D-5 - - - - 50 dmm max.
Asphaltenes ASTM D-2007 - - - - 15% min.
Saturates ASTM D-2007 - - - - 15% max.
Polar Compounds ASTM D-2007 - - - - 25% min.
Aromatics ASTM D-2007 - - - - 15% min.
Modified Sealer Binder Content - - - - 20% min

(1) pH may be used in lieu of the particle charge test which is sometimes inconclusive in slow setting, bituminous emulsions.
(2) Pumping stability is tested by pumping 1 pint, (475 ml) of GSB-88® diluted 1 part concentrate to 1 part water, at 77°F (25°C), through a 1/4inch gear pump operating 1750 rpm for 10 minutes with no significant separation or coagulation.

Storage and Handling Instructions

GSB-88® is to be stored in vertical storage tanks and shall be handled like any standard asphalt emulsion. The storage tank should be equipped with a slow revolution mechanical agitator. Hot water heating coils, electrical coils, or electrical heaters are required in colder climates to prevent the emulsion from freezing. Positive displacement gear pumps should be used to transfer and apply GSB-88® materials. Storage and handling temperature are 50°F (10°C) to 160°F (71oC). GSB-88® should be protected from freezing, or whenever outside temperature drops below 40°F (4°C) for prolonged time periods.

Application Instructions

Equipment: GSB-88® is to be applied with standard bituminous distributors. The equipment must be in good working order, and contain no contaminants or dilutents in the tank. Spreader bar tips must be clean, free of burrs, and adjusted for regulated flow. Any type of tip or pressure source is suitable that will maintain predetermined flow rates and constant pressure during the application process. The equipment should be tested under pressure for leaks and to insure it is in working order before use. No special mixing equipment is necessary since GSB-88® concentrate may be easily diluted with water in the spreader tank.

Dilution: GSB-88® concentrate must be diluted with water. Water for mixing shall be potable, with a maximum hardness of 90ppm calcium and 15ppm magnesium, and deleterious iron, sulfates, and phosphates maximum 7ppm, and less than 1ppm of organic byproducts.  Ideally water shall be softened.  Water shall be minimum 140F prior to adding to emulsion and shall be within 10F of emulsion temperature.  Emulsion shall be 140F to 180F prior to adding water. Always add the water to the concentrate emulsion, never add concentrate emulsion to the water. Two dilution rates are recommended as follows:

• 1 part GSB-88® to 1 part water for most applications is recommended.

• 2 parts GSB-88® to 1 part water for use on hills where run off may be of concern, or on very rough surface texture pavements.

Polymer Addition:The polymer shall be a vinyl acrylic polymer approved for use by Asphalt Systems Inc.  Consult Asphalt System's Technical Representative for specific details.

Rate of spread is normally determined by the texture, porosity, and age of the asphalt pavement to be sealed. Application rate can vary from 0.08 to 0.15 gallons per square yard (0.36 to 0.68 Liters to Square Meter). For 2:1 dilution, 0.08 to 0.12 gallons per square yard (0.36 to 0.54 Liters to square meter) is recommended. For 1: 1 dilution, 0.10 to 0.15 gallons per square yard (0.46 to 0.68 Liter to square meter) is recommended. Exceeding recommended application rates is not recommended without consulting Asphalt System's Technical Representative.

Cure Time: Expected cure times with proper applications should generally range from 2-4 hours depending upon local climatic conditions (humidity, surface temperature, daytime/ nighttime application, spread rates and dilution, etc). Sheltered or shady areas may require longer cure times.

Application Precautions

GSB-88® is not to be applied to wet or damp pavement surfaces. Do not apply during rainy or damp weather, or when rain is anticipated within 8 hours after application is completed. Pavement surface temperatures should be 50°F (10°C) and rising before application of GSB-88® is applied. At least three hours of daylight should remain after completion of the application. The Emulsion temperature for application should be 130oF, but not exceed 160oF.  GSB-88® should not be applied on extremely windy days.

Caution should be taken when applying GSB-88® over existing coal tar treatments, as curing time and traffic readiness could be compromised, consult with Asphalt System's Technical Representative

Preparation of Pavement Surfaces: Repair and patch all major pavement defects. All cracks, other than hairline cracks, should be filled with suitable bituminous crack filler. Scrape all oil spots to remove excess oil and dirt. Just before applying GSB-88® clean the asphalt surface of all loose dust, dirt, and other debris.

Sanding: If needed, sanding should be done at the same time GSB-88® is applied to maintain adequate surface friction. A hard, highly fractured sand should be used. Because there are regional differences in sand characteristics, a knowledgeable local pavement maintenance engineer should be consulted to insure that the appropriate amount and type of sand is chosen to regain any lost skid resistance. Sanding is best done by mounting a sand slinger on the applicator and applying approximately 0.10 to 0.5 pounds of sand per square yard to achieve needed friction results. Consult Asphalt System's Technical Representative for specific details.

Striping: Striping should be done in two phases, the first phase is to be a 30% stripe after the GSB-88® has had sufficient time to cure. Final Striping should be done 30 days after the final application. 

Maintenance: Under normal traffic conditions a single application of GSB-88® when properly applied, should not require reapplication for 3 to 5 years. Thereafter, additional applications of GSB-88® can be reapplied to extend the life of the pavement indefinitely. 

Health and Safety: Consult the Safety Data Sheet (SDS) for GSB-88® fire and explosion data, health hazard data, first aid procedures, reactivity data, spill or leak procedures, waste disposal and use of personal protective equipment. Additional copies of the Safety Data Sheet (SDS) can be obtained by calling ASI at 801-972-6433


Trade Name: GSB-88®

Synonyms: Asphalt Emulsion, GSB-88®, Asphalt Sealer, Fog Seal, Cationic Bitumic Emulsion

Uses and uses advised against:  USE-Asphalt Sealer, fog seal.

Manufactured b: Asphalt Systems Inc... 2775 w 1500 s, Salt lake City, UT  84104 , Phone (801)972-2757

Chemical Emergency: Spill, Leak, Fire, Exposure, or Acccident Call Chemtrec Day or night, Within USA and Canada 800-824-9300 CCN1842 or 703-537-3887 (collect calls accepted)


GHS Classification(s)

  • Carcinogenicity: Category 2
  • Serious Eye Damage / Eye irritation: Category 2b
  • Aquatic Toxicity (chronic): Category 3
  • Skin Corrosion / Irritation: Category3

Label Elements

  • Signal Word: Warning
  • Pictogram: 

Hazard Statement (s)

  • Causes Mild Skin Irritation
  • Causes Eye irritation
  • Suspected of Causing Cancer
  • Harmful to Aquatic Life with long lasting effects.

Prevention Statement (s)

  • Do not handle until all safety precautions have been read and understood.
  • Do not get in eyes, on skin, or on clothing
  • Wash Thoroughly after handling.
  • Avoid release to the environment
  • Use personal protective equipment as required.

Response Statement (s)

  • IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • IF exposed or concerned: Get medical advice / attention.
  • IF eye irritation persists: Get medical advice / attention.

Storage Statement (s)

  • Store in a well-ventilated place.
  • Store locked up.

Disposal Statement (s)

  • Dispose of contents / container in accordance with relevant

Other Hazards

  • Avoid direct contact with heated material above 90oC (190 F) Once cured, the inert solid material is considered non-hazardous. Please see package labelling or manufacturer’s literature for more detail on usage, handling, storage and disposal under different applications.

Hazardous Materials Identification System (HMIS)

Health Flammability  Reactivity Basis
1 0 0 0


COMP Name (s) CAS Registry # CONC(%) Class: GHS Risk
Bitumen 8052-42-4  EC: 232-490-9  35 - 40 N/A N/A
Modified Sealer Binder 12002-43-6   EC:601-660-8  12 - 20 N/A N/A
Aromatic Oil Contact Manufacturer  Carc. 2 H351 Carc. R40
Water 7732-185 EC: 231-791-2 38-40 N/A N/A
Emulsifier Contact Manufacture N/A N/A

Caution: there maybe the possibility of volatile vapors developing under extreme heat conditions.


Eye Contact: If contact with hot material occurs, flush gently with cold running water. Adhered material should only be removed under the medical direction. Seek immediate medical advice.

Skin Contact: If contact with hot material occurs, drench area immediately with cold water, do not attempt to remove material adhered to skin. Seek immediate medical attention.

Inhalation: If inhaled, remove from contaminated area. To protect rescuer, use a Type A (organic vapor) respirator or an air-line respirator (in poorly ventilated areas). Apply artificial respiration if not breathing.

Ingestion: For advice, contact a Poison Information center or a doctor (at once). If swallowed,do not induce vomiting.  Do not give anything to drink unless directed by a physician. Never give anything by mouth to a person who is not fully conscious. If significant amounts are swallowed or irritation or discomfort occurs, seek medical attention immediately.

First aid Facilities: Eye Wash facilities and safety shower are recommended.

Most important symptoms and effects, both acute and delayed

Avoid contact with hot material, as burns may result. Bitumen’s, occupational exposure to straight run bitumen and their emissions curing road paving, are classified as possibly carcinogenic to humans (IARC Group 2B) However, since this product is not intended to be heated above 90oC the carcinogenic potential is significantly reduced.

Immediate medical attention and special treatment needed.

Burns caused by bitumen require special medical treatment. Consultation with a burns specialist experienced in bitumen burns is advisable in the first instance.

Bitumen burns: If hot bitumen contacts the skin, flush immediately with water and make no attempt to remove it. Use wet, cold towels, if face, neck, shoulder, or back etc. are burnt. Cool burn areas for 30 minutes and seek immediate medical attention. Where bitumen completely circles a limb, it may have a tourniquet effect and should be split longitudinally as it cools.  If eye burns result flush with water for 15 minutes, pad and seek immediate medical attention.


NFPA Flammability classification: NFPA Class IIIB combustible material.
Flash Point 200oC (400oF) Minimum 
Lower Flammable Limit   N/A
Upper Flammable Limit N/A 
Auto-ignition Temperature N/A 

Extinguishing Media: In case of fire, use water fog, dry chemical or carbon dioxide extinguisher or spray. DO NOT USE water jet.

Special Hazards arising from the substance or mixture: Combustible. May evolve toxic gases (carbon/ sulphur/ nitrogen oxides, hydrogen sulphide, hydrocarbons) when heated to decomposition.

Advice for Firefighters: Evacuate area and contact emergency services. Toxic gases may be evolved in a fire situation. Remain upwind and notify those downwind of hazard. Wear full protective equipment including self-contained breathing apparatus (SCBA) when combating fire. Use water fog to cool intact container and nearby storage areas.

Hazchem code: None Allocated


Personal precautions, protective equipment and emergency procedures: Wear Personal Protective equipment (PPE) as detailed in section 8 of the SDS Clear area of all unprotected personnel. Ventilate area where possible. Allow material to cool. Contact emergency services where appropriate

Environmental Precautions: Contain material and prevent product from entering drains and waterways. Collect and seal in properly labelled containers for disposal. If contamination of sewers or waterways has occurred, contact local emergency services.

Methods of Cleaning up: contain spillage, then cover / absorb spill with non-combustible absorbent material (vermiculite, sand or similar) collect and place in suitable containers for disposal. Eliminate all ignition sources.

Reference to other sections: See Section 8 and 13 for exposure controls and disposal.


Precautions for safe handling: before use carefully read the product label. Use of safe work practices are recommended to avoid eye or skin contact and inhalation. Observe good personal hygiene, including washing hands before eating. Prohibit eating, drinking and smoking in contaminated areas.

Conditions for safe storage, including any incompatibilities: Store in well-ventilated area removed from ignition sources, oxidizing agents and foodstuffs. Keep storage vessels closed when not in use. Take precautionary measures against static electricity discharges. 

Specific end use (s): not applicable.


Control Parameters: Exposure Standards

ppm mg/m ppm,mg/m
Bitumen Fume SWA (AUS) ---- 5 ----

Biological Limes: No biological limits values have been entered for this product

Exposure controls: Engineering controls; Avoid inhalation by working upwind where possible. Use in well ventilated areas.   Maintain vapor /fume levels below the recommended exposure standards. Maintain fume levels below the recommended exposure standard.

PPE: Personal protective equipment (PPE) should meet national recommended standards. Check with PPE suppliers.

Eye / Face: Wear a face-shield or splash proof goggles when handling hot material. Wear safety glasses when handling cold material

Hands: Wear heat resistant leather or insulated gloves when handling hot material. Wear chemical resistant gloves (i.e. Nitrile) when handling cold material.

Body: Avoid contact with skin and clothing. Wear impervious coveralls and heat resistant boots when handling hot material. When the risk of skin exposure is high, an impervious chemical suit may be required.

Respiratory: Where an inhalation risk exists in enclosed or partly enclosed environments (i.e. underground parking, large tanks, tunnels etc.) wear a type-A class P1  (organic gases /vapors  and particulate) respirator, dependent on a site specific risk assessment.


Information on basic physical and chemical properties.

Appearance: Brown liquid (in Use):  Black semi-solid thermoplastic material (when cured) 
Odor: Bitumen like odor
Flammability: Class C2 Combustible
Flash Point: >200 C (400 F)
Boiling Point: 100 C (212 F)
Melting Point: N/A
Evaporation Rate: N/A
PH: 2-7
Vapor Density (air = 1): N/A
Specific Gravity: 1.014
Solubility: Insoluble
Vapor Pressure:  N/A
Upper explosion limit: N/A
Lower explosion limit: N/A
Partition coefficient: N/A
Auto ignition temperature: N/A
Decomposition temperature: N/A
Viscosity: N/A
Explosive properties: N/A
Oxidizing properties: N/A
Odor threshold: N/A
Max Temp in use: ambient to 90oC  (195 F)


Reactivity:  Carefully review all information provided in section 10.

Chemical Stability: Stable under recommended conditions of storage.

Possibility of hazardous reactions: Polymerization is not expected to occur.

Conditions to avoid:  Keep away from extreme heat, strong acids, and strong oxidizing conditions.

Incompatible materials: incompatible with oxidizing agents (eg. Hypochlorite)

Hazardous Decomposition Products: May evolve toxic gases (carbon / sulphur/ nitrogen sulphide, hydrocarbons) when heated to decomposition.


Toxicity Data: Asphalt

Acute Toxicity: No known data is available for this product. Based on available data, the classification criteria are not met. Inhalation may cause headache, nausea and respiratory tract irritation. Once cured, the inert solid material is considered non-hazardous.

Skin: Contact with hot material can result in skin burns. Exposure to asphalt fumes (in the unlikely event of heating above 150oC (300 F) may cause dermatitis and photosensitizations. Once cured, the inert semi solid material is considered non-hazardous.

Eye: Contact with hot material can result in eye burns. . Exposure to asphalt fumes may cause irritation, redness, or pain. Once cured, the inert semi solid material is considered non-hazardous.

Sensitization: This product is not known to be a skin or respiratory sensitizer.

Mutagenicity: Insufficient data available to classify as a mutagen.

Carcinogenicity: Bitumen’s, occupational exposure to straight-run bitumen’s and their emissions during road paving, are classified as possibly carcinogenic to humans (IARC group 2B) it is strongly suggested that temperature plays an important role in determining the degree of exposure and also the carcinogenic potential of bitumen emissions. Therefore, since this product is not intended to be heated above 90oC (195 F) the carcinogenic potential is significantly reduced.

Reproductive: Insufficient data available to classify as a reproductive toxin.

STOT- Single: Not classified as causing organ effects from single exposure. However, inhalation of bitumen Exposure fumes may cause headache, nausea and respiratory tract irritation. This material may release trace quantities of hydrogen sulphide within storage facilities.

STOT –repeated: Not classified as causing organ effects from repeated exposure.

Exposure Aspiration: This product is not expected to present an aspiration hazard.


Toxicity: When set, the bulk of the bitumen dispersed in asphalt is fairly inert, and should not present an environmental hazard under normal conditions.

Persistence and degradability: Can be expected to biodegrade slowly

Bioaccumalative potential: This product is not expected to bioaccumulate through food chains in the environment.

Mobility in soil: Emulsifies in water. Spillages are unlikely to penetrate soil.

Other Adverse effects: Avoid uncured emulsion run off into storm water drainage system.


Waste treatment Methods

Waste disposal: For small amounts dispose of to an approved landfill site. Contact the manufacturer for additional information if larger amounts are involved. Prevent contamination of drains and waterways as aquatic life may be threatened and environmental damage may result.

Legislation: Dispose of in accordance with relevant local legislation.


Not classified as a danderous good by the criteria of the ADG code, IMDG or IATA.

UN # None Allocated None Allocated None Allocated
Proper Shipping Name None Allocated None Allocated None Allocated
TRANS Hazard Class None Allocated None Allocated None Allocated
Packing Group None Allocated None Allocated None Allocated

Environmental Hazards: No Information provided

Special Precautions for User Hazchem Code: None Allocated


Safety, health and environmental regulations/legislation specific for the substance or mixture.

Poison schedule: A poison schedule number has not been allocated to this product using the criteria in the Standard for the uniform Scheduling of Medicines and Poisons (SUSMP)

Classification: Safe work Australia criteria is based on the Globally Harmonized System (GHS) of Classification and Labelling chemicals. The classification and phrases listed below are based on the approved criteria for classifying hazardous substances (NOHSC: 1008 (2004))

Hazard Codes : Carc.  Carcinogen 
N Dangerous for the Environment
Risk Phrases: R40 Limited evidence of a carcinogenic effect.
R52/53  May cause long-term adverse effects in aquatic environment.
Safety Phrases: S36/37 Wear suitable protective clothing and gloves.

Inventory listing (s): AUSTRALIA: AICS (Australia inventory of chemical substances). All components are listed on AICS, or are exempt.


Additional Information 

Personal protective equipment guidelines: The recommendation for protective equipment contain within this report is provided as a guide only. Factors such as method of application, working environment, quantity used, product concentration and the availability of engineering controls should be considered before final selection of personal protective equipment is mad.

Health effects from exposure:  it should be noted that the effects from exposure to this product will depend on several factors including: frequency and duration of use; quantity used; effectiveness of control measures; protective equipment used and method of application. Given that it is impractical to prepare a report which would encompass all possible scenarios, it is anticipated that users will assess the risk and apply control methods where appropriate.

Environmental Product Declaration For GSB-88®, Asphalt Systems, Inc

Product Information:

GSB-88® is an emulsified Modified Sealer Binder pavement sealer and rejuvenator. The product rebinds the surface aggregate while sealing and rejuvenating the surface binder, providing a cosmetically enhancing finish. It has been used extensively in both early stage pavement preservation, as well as reactive late stage applications for badly raveled and deteriorated roads, parking areas, and airfield runways and taxiways. It extends the life of asphalt pavements by an average of five years. It is applied with standard asphalt emulsion application equipment, generally asphalt distributors. In some cases it may be advisable to broadcast a very light application of sand over the still wet GSB-88®.

The analysis shown here was performed in accordance with the Earthsure Environmental Product Declaration Program, using the product category rule for pavement preservation products. The analysis is based on a life cycle assessment of GSB-88®, using data collected from November 2009 to November 2010. Environmental Product Declarations from other sources using different Product Category Rules may not be comparable to this one.

Measurement Certification


The Life Cycle Environment Impact of preserving one square meter of pavement for one year using GSB-88®


More Information on GSB-88®


Product Owner Certification



The analyses presented here were performed with all due care, but the user should realize that they represent the average results measured under standardized conditions and the actual environmental performance will vary depending on the particular application, the climate, the traffic type and intensity and other factors beyond the control of Asphalt Systems, Inc. The results shown here pertain only to the referenced product category rule. They should not be compared directly to results using a different product category rule.

GreenCircle-MarkGreenCircle Certification Explained

GSB-88®has just been awarded the first GreenCircle Certificate for asphalt emulsion in the world. When compared to a standard asphalt road without GSB-88® and a road with GSB-88® the road with GSB-88® will REDUCE Global Warming 49%, REDUCE Acidification 49%, REDUCE Eutophication 49%, REDUCE Ecotoxicity 46%, and REDUCE Smog 49%.

Please see below for definitions on the various impact categories listed on the GreenCircle certificate. If you have any questions or need clarification about these, please contact your ASI salesman or the main office.

Global Warming:

The "Global Warming" potential (GWP) associated with the manufacture of a product is also known as its "carbon footprint", and is measured in kilograms of carbon dioxide equivalents (kg CO2e). Carbon dioxide and other gasses are considered primary factors in climate change, and increased attention is now focused on controlling CO2 emissions worldwide as these gasses can trap heat close to the Earth. Environmental scientists have concluded that climate change is affecting plant and animal ecosystems, and could have many other negative consequences to human society.


Acidification is a more regional rather than global impact affecting fresh water and forests as well as human health when high concentrations of SO2 are attained. Acidification is a result of processes that contribute to increased acidity of water and soil systems. Acid rain is an example of acidification.


Eutrophication is the fertilization of surface waters by nutrients that were previously scarce. When a previously scarce or limiting nutrient is added to a water body, it leads to the overabundance of aquatic photosynthetic plant life. An example of this are algae blooms. This may lead to the water body becoming hypoxic (oxygen deficient), eventually causing the death of fish and other aquatic life, creating dead zones.


Many chemicals, when released into the environment, can cause damage to individual species and to the overall health of an ecosystem. Ecotoxicity measures the potential damage to the ecosystem that would result from releasing that chemical into the environment.


Earthsure is an environmental product declaration program, the first in the Americas, and the only one provided by an environmental non-profit. An environmental product declaration is like a nutrition label for the environment. It discloses key environmental impacts of a product based on the science of life cycle assessment.

GSB-88® is an emulsified Modified Sealer Binder, pavement sealer and rejuvenator. GSB-88® is one of the most environmentally sound pavement preservation products on the market. It has a 22 year history of performance that has been well-documented by its continued and ever-expanding use nationwide. It has been thoroughly used and tested by groups such as the FAA, the United States Navy, and the Army Corp. of Engineers. The product has been used extensively in both early stage pavement preservation, as well as reactive late stage applications for badly raveled and deteriorated pavements. It has been successfully used as a construction seal for new pavements, to mend construction related problems, and it is the ideal product to fend off the aging process that starts immediately after construction is completed. GSB-88® is the best of both worlds. It offers both the introduction and reintroduction of light fractions, as well as the superior binding, coating, and protection that only GSB products can offer.

Support Information:

EPA Report

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Sustainability and Life Cycle Assessment
An overview of Asphalt Systems, Inc.® (ASI), The Institute For Environmental Research (IERE), Life Cycle Assessment on GSB-88®, and Sustainability in pavement preservation and beyond.

image Both the Institute for Environmental Research and Education (IERE) and the Green Circle Certified organization have served as third party reviewers of our product. Only GSB-88® is allowed to display the Earthsure Label of the IERE and the Green Circle in our marketing. Download the Complete Earthsure Life Cycle Assessment of GSB-88® here.