What is PG 64 22 in asphalt?

Paving Asphalt

Asphalt

Asphalt most often refers to: Bitumen, also known as "liquid asphalt cement" or simply "asphalt", a viscous form of petroleum mainly used as a binder in asphalt concrete. Asphalt concrete, a mixture of bitumen with coarse and fine aggregates, used as a road surface.

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Asphalt - Wikipedia

PG 64-22 is a Performance Graded (PG) asphalt derived from specially selected crude oils via carefully controlled refining processes. The quality of ExxonMobil products is assured for every delivery. Products are manufactured according to global product integrity requirements.

What does PG 64 22 mean?

For example, in "PG 64-22," the "64" represents the maximum pavement temperature, in degrees Celsius, for which this binder can be used with low traffic levels. The second number, "-22," signifies the minimum temperature, in degrees Celsius, for which the binder can be used without the likelihood of failure.

What is the difference between PG 58 28 and PG 64 22?

◦ PG 58‐28 performs best in low use applications or in the foothills and higher elevations as it performs best in lower temperatures than PG 64‐22. ◦ PG 64‐22 will perform better in the Greater Denver market in higher use applications as it is moderately ”firmer” and less susceptible to shoving in our climate.

What does PG 76-22 mean?

For example, a PG 76-22 is likely to be a polymer modified binder since the sum is 98, while a PG 64-10 is likely to be an unmodified since the sum is 74. Polymer modified binders used in Caltrans projects will be noted with Polymer Modified (PM), such as PG 64-28PM, or PG 76-22PM.

What is PG 64 28?

Asphalt Cement, PG 64-28.

PG Binder Grading Explained

What is PG 67 22?

The most commonly used binder is a PG 67-22. The PG stands for performance grade and the two numbers (67 and –22) are the temperature ranges in degrees Celsius for which the binder meets specifications. Most other binders used in the state are derivatives of this type of binder.

What is PG 64 16?

The standard asphalt binders used in dense grade asphalts in California today are known by the following names: PG 64-10, PG 64-16 & PG 70-10. The numbers in these names correspond to temperatures in degrees Celsius. The numbers are a range at which the asphalt will maintain its' quality when laid down in pavement.

What is PG 70 10 asphalt?

Rating: Bitumen PG 70-10 is Performance Grade (PG) Bitumen is bitumen which is graded based on its performance at different temperatures. Performance Grade (PG) bitumen cement based on two factors: traffic and pavement temperature.

What does PG 58 28 mean?

The first number of the PG designation specifies the maximum design temperature; the second specifies the minimum design temperature. A PG 58-28, for example, meets the average 7-day maximum pavement design temperature of 58°C and the minimum design temperature of -28°C.

What is PG grading of bitumen?

Performance Grade (PG) bitumen is bitumen which is graded based on its performance at different temperatures. The Long-Term Pavement Performance(LTPP) has given certain algorithm to calculate the temperature of the pavement based on the temperature of the air above.

How do you choose PG grade asphalt?

Performance Grade Specification

The top several rows (all the rows above the “original binder” row) are used to designate the desired PG grade. For instance, if the average 7-day maximum pavement design temperature is greater than 52^oC but less than 58^oC then you should use the “< 58” column.

What is an asphalt binder?

The asphalt binder functions as an inexpensive (typically, $0.05/pound), waterproof, thermoplastic adhesive. In other words, it acts as the glue that holds the road together. In its most common form, asphalt binder is simply the residue from petroleum refining.

What is the grade of asphalt?

The larger the pene tration number the softer the asphalt. The Asphalt Institute specifies four penetration grades: 60-70, 85-100, 120-150, and 200-300. The 60-70 grade is usually used only in pavements where traffic is very heavy such as principle city streets and very heavily trafficked rural highways.

What are the different types of asphalt binders?

Typical asphalt binders used in the U.S. are AC-10, AC-20, AC-30, AR-4000 and AR-8000. Viscosity grading is a better grading system but it does not test low temperature asphalt binder rheology.

What is the high temperature PG grade of the asphalt binder?

An example of a PG binder grade is PG64-22. The binder should resist rutting to a pavement temperature of 64°C and cracking to a pavement temperature of -22°C.

What is rap in asphalt?

ORIGIN. Reclaimed asphalt pavement (RAP) is the term given to removed and/or reprocessed pavement materials containing asphalt and aggregates. These materials are generated when asphalt pavements are removed for reconstruction, resurfacing, or to obtain access to buried utilities.

What are the grades of bitumen binders?

Bitumen is classified by its viscosity at 60ºC and comprises three major grades, Class 170, Class 320 and Class 600.

What is the viscosity of asphalt binder?

Typical Values

Superpave testing is done at 275°F (135°C) and typical dynamic viscosity values for asphalt binders at this temperature are 0.2 to 2 Pa·s. The Asphalt Institute recommends using a value of about 0.28 Pa·s for compaction temperatures.

What is grade 40 asphalt?

Bitumen penetration grade 40/50 bitumen means the penetration value is in the range 40 to 50 at standard test conditions which commonly used as a Paving Grade. Bitumen is applicable for the production of hot mix asphalt for bases and pavements and for road construction.

What is 60 70 grade of asphalt?

Bitumen 60/70 is a standard Penetration Grade of Bitumen ASTM D946M, typically used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties particularly in road and airport constructions and other similar applications.

What is AC 20 asphalt?

AC-20XP is an SBS polymer modified, hot applied asphalt designed for use as a bituminous binder for chip seals. This product is supplied in bulk. Recommended Use.

What is asphalt used for?

What is asphalt made of? It is a binder mixed with an aggregate creating asphalt cement that binds the stone, sand, and gravel, resulting in the pavement for our roads and highways. A small percentage of asphalt is used in waterproofing, sealing, and insulation products.

What do the numbers in the PG binder grading system represent?

The standard notation for PG binder is PG XX-YY where XX is the average-seven day maximum pavement design temperature and YY is the minimum pavement design temperature.

Why is it important to have optimum binder content in asphalt concrete?

The optimum asphalt binder content as determined by mix design should be high enough to prevent excessive fatigue cracking. The use of an asphalt binder with a lower stiffness will increase a mixture's fatigue life by providing greater flexibility.

What is pg67?

The most commonly used binder is a PG 67-22. The PG stands for performance grade and the two numbers (67 and –22) are the temperature ranges in degrees Celsius for which the binder meets specifications. Most other binders used in the state are derivatives of this type of binder.