sealcoating options refined tar/ asphalt emulsion blended sealcoatings

Sealcoating OptionsSealcoating Options

REFINED TAR/ ASPHALT REFINED TAR/ ASPHALT EMULSIONEMULSION

Blended SealcoatingsBlended Sealcoatings

TOPIC TOPIC

Introduction.Introduction. How are they made?How are they made? Characteristics.Characteristics. Advantages/ Disadvantages.Advantages/ Disadvantages. Guideline-Mixing, Application.Guideline-Mixing, Application. How to get the best performance.How to get the best performance.

Presented byPresented by

Girish DubeyGirish DubeyPresident, STAR, Inc.President, STAR, Inc.

NPE, FEB 1, 2008, NASVILLE, TNNPE, FEB 1, 2008, NASVILLE, TN


REFINED TAR/ ASPHALT EMULSIONREFINED TAR/ ASPHALT EMULSION


INTRODUCTIONINTRODUCTION

Blended sealcoatings are Blended sealcoatings are mixtures of refined Tar (RTPE) & mixtures of refined Tar (RTPE) &

Asphalt Emulsion (AE) based Asphalt Emulsion (AE) based sealers. sealers.

They are supplied as Blends They are supplied as Blends by sealcoating manufacturerby sealcoating manufacturer..




The blends are made either by;The blends are made either by;

1. Mixing finished sealers (RTPE+AE), 1. Mixing finished sealers (RTPE+AE), OrOr

2. Mixing HOT Refined Tar & Asphalt 2. Mixing HOT Refined Tar & Asphalt during the manufacturing process. during the manufacturing process.

Method 1 is commonly used.Method 1 is commonly used.




INTRODUCTIONINTRODUCTION

IN WHAT RATIOS?IN WHAT RATIOS?Confidential-Some ManufacturerConfidential-Some Manufacturer

Most Manufacturers tell their customers.Most Manufacturers tell their customers.

Could be in the Ratio of Could be in the Ratio of REFINED TAR/ ASPHALT EMULSIONREFINED TAR/ ASPHALT EMULSION

80/2080/2070/3070/3050/5050/5030/7030/7020/8020/80????????

Manufacturers decide what works best, Manufacturers decide what works best, In their region.In their region.




SPECIFICATIONSSPECIFICATIONS (ASTM, FED., FAA..)(ASTM, FED., FAA..)

NONE NONE

Do Do NotNot Supply a Blended Product Supply a Blended Product if the job demands compliance if the job demands compliance

to a specification. to a specification.

Please NotePlease Note

A. Refined tar (CTPE) sealers meet ASTM 5727-00, A. Refined tar (CTPE) sealers meet ASTM 5727-00, FAA P-625, 627,628, etc.FAA P-625, 627,628, etc.

B.B. Asphalt SEALERS- No specification designed. Asphalt SEALERS- No specification designed. ASTM Specification is pending.ASTM Specification is pending.




INDUSTRY CONSENSUSINDUSTRY CONSENSUS

Blends were developed in response to refined Blends were developed in response to refined tar shortages as well as escalating prices, in tar shortages as well as escalating prices, in the last 4-5 years.the last 4-5 years.

Asphalt emulsion is used as an extender for Asphalt emulsion is used as an extender for refined tar sealers. refined tar sealers.

Properties are a hybrid of both refined tar and Properties are a hybrid of both refined tar and asphalt emulsions.asphalt emulsions.

In the blends, properties of the larger In the blends, properties of the larger component dominates the overall performance. component dominates the overall performance.

Do not treat the blends in the same manner as Do not treat the blends in the same manner as 100% Refined Tar Sealers.100% Refined Tar Sealers.




INDUSTRY CONSENSUSINDUSTRY CONSENSUS

ADVANTAGESADVANTAGESOF THE BLENDSOF THE BLENDS

1.1. Extends the availabilityExtends the availability of refined tar of refined tar sealers.sealers.

2.2. Improve the performanceImprove the performance of Asphalt of Asphalt Emulsion sealers, especially color fade Emulsion sealers, especially color fade resistance, resistance to chemicals.resistance, resistance to chemicals.

3.3. Reduces the odor and burningReduces the odor and burning (sensation) of refine tar sealers.(sensation) of refine tar sealers.

4.4. Cost reduction-Cost reduction- May be ???May be ???

5.5. Application-Application- Identical to Refined Tar Identical to Refined Tar Sealers. No special material preparation or Sealers. No special material preparation or equipment is neededequipment is needed..



Blended SealcoatingsBlended Sealcoatings INDUSTRY CONSENSUSINDUSTRY CONSENSUS

DISADVANTAGESDISADVANTAGESOF THE BLENDSOF THE BLENDS

Performance Performance not as goodnot as good as of refined tar sealersas of refined tar sealers. .

Reduced resistance to oils, fats, Reduced resistance to oils, fats, petrochemicals, etc. petrochemicals, etc.

Does not last as long.Does not last as long. Limitations with mix designs.Limitations with mix designs.

a. a. WaterWater, max. 25% for blends with 50% , max. 25% for blends with 50% or more of asphalt emulsion in the or more of asphalt emulsion in the

blend.blend.b. b. SandSand- Highly recommended.- Highly recommended.c. c. Two coats- Two coats- Will yield better longevity.Will yield better longevity.

Higher ambient and cure temperaturesHigher ambient and cure temperatures than than CTPECTPE.. Min. 50 deg. F, because asphalt softens Min. 50 deg. F, because asphalt softens and melts at much higher temperature than refined and melts at much higher temperature than refined tar. Refined tar sealers may be applied as low as tar. Refined tar sealers may be applied as low as

40 Deg. F40 Deg. F




INDUSTRY CONSENSUSINDUSTRY CONSENSUSPerformance declinesPerformance declines with with

Increasing proportion of asphalt Increasing proportion of asphalt sealer in the blend.sealer in the blend.

What defines Performance?What defines Performance?

Overall Longevity of the coating.Overall Longevity of the coating.Fade Resistance- Shall stay dark slate Fade Resistance- Shall stay dark slate in color.in color.

Resist attack by oil, grease, Resist attack by oil, grease, petrochemicals, etc.petrochemicals, etc.

Resist attack by oil, grease, Resist attack by oil, grease, petrochemicals, etc.petrochemicals, etc.




MIX DESIGNSMIX DESIGNSBased upon our experienceBased upon our experience

1. Blends 1. Blends rich in refined tarrich in refined tar sealer sealer portion; (More than 60%)portion; (More than 60%)

BlendBlend 100 gal.100 gal.

WaterWater 30-35% max30-35% max

Sand/AggregateSand/Aggregate 200-300 lb.200-300 lb.

Additive (Optional)Additive (Optional) 1-2 1-2 gals.gals.




MIX DESIGNSMIX DESIGNSBased upon our experienceBased upon our experience

2. Blends 2. Blends rich in Asphaltrich in Asphalt Emulsion portion; Emulsion portion; (More than (More than 60%)60%)

Blend, Blend, (CTPE/AE)(CTPE/AE) 100 gal.100 gal.

WaterWater 20-25% 20-25% maxmax

Sand/AggregateSand/Aggregate 300-500 300-500 lb.lb.

Additive (Optional)Additive (Optional) 1-1-

2 gals2 gals..




APPLICATION RATESAPPLICATION RATESRecommendationsRecommendations

1.1. Low to Medium Traffic Low to Medium Traffic Two (2) CoatsTwo (2) Coats

@ 0.25 gallon of the mix /sq. yard.@ 0.25 gallon of the mix /sq. yard.

2.2. High Traffic AreasHigh Traffic Areas

Three Three (3) Coats(3) Coats

@ 0.35 gallon of the mix /sq. yard.@ 0.35 gallon of the mix /sq. yard.



Blended SealcoatingsBlended Sealcoatings APPLICATION APPLICATION Do’s & Don'tsDo’s & Don'ts

Do:Do:1. Follow manufacturers detailed 1. Follow manufacturers detailed instructions.instructions.

2. Apply when ambient 2. Apply when ambient temperature is min 50 temperature is min 50 ° F and ° F and Humidity less than 80 (60% is Humidity less than 80 (60% is preferred).preferred).

3. Be aware that you are using a 3. Be aware that you are using a blended product, not 100% blended product, not 100% refined tar or asphalt-based refined tar or asphalt-based sealer. sealer.




APPLICATION APPLICATION

Do’s & Don'tsDo’s & Don'ts

Do Not:Do Not:1. Over-dilute.1. Over-dilute. Follow mix design Follow mix design

recommendations.recommendations.

2. Apply when rain is in the 2. Apply when rain is in the forecastforecast for 8 hrs. or on a foggy or humid for 8 hrs. or on a foggy or humid day.day.

3. Apply over gilsonite or chip 3. Apply over gilsonite or chip sealed surfacessealed surfaces..



Blended SealcoatingsBlended Sealcoatings SUMMARYSUMMARY

Blended SealersBlended Sealers are mixtures of refined are mixtures of refined tar and asphalt based sealer.tar and asphalt based sealer.

Developed in response to tar shortageDeveloped in response to tar shortage and escalating prices.and escalating prices.

Used primarily to extend refined tar Used primarily to extend refined tar sealers.sealers.

They have certain advantagesThey have certain advantages but but do not do not matchmatch refined tar sealer in overall refined tar sealer in overall performance and longevity.performance and longevity.

The application is similarThe application is similar to that of to that of identical to refined tar sealers, with the identical to refined tar sealers, with the following variations;following variations;

Mix designs- Dilution, Sand Loadings, Mix designs- Dilution, Sand Loadings, Ambient conditionsAmbient conditions Number of coats.Number of coats.

Follow manufacturers instructions.Follow manufacturers instructions.




QUESTIONS??QUESTIONS??HAVE A NICE 2008 HAVE A NICE 2008

SEALCOATING SEASONSEALCOATING SEASON

Want a copy of this presentation?Want a copy of this presentation?

Call Call STAR, INC.STAR, INC. @ @ 800-759-1912800-759-1912 or or

E-Mail E-Mail [email protected]@starseal.com

sealcoating options refined tar/ asphalt emulsion blended sealcoatings

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