VG30 is classified through a viscosity-based grading system and should be selected according to the applicable project specification.

What Does VG30 Mean?

The letters VG stand for Viscosity Grade. In this grading system, bitumen is classified using viscosity-related requirements under defined test conditions, together with other properties specified by the applicable standard.

The number in VG30 identifies the grade within the viscosity grading system. It should not be interpreted in the same way as the numbers used in penetration grades such as 60/70 or 40/50.

How Is Viscosity Grade Bitumen Classified?

Viscosity grading evaluates the binder according to its resistance to flow under defined temperature and test conditions. This approach provides a different basis for classification than a system centered mainly on penetration consistency.

VG10, VG20, VG30 and VG40 are examples of viscosity grades. Each grade must meet the limits defined by the applicable standard for viscosity and the other required physical or safety-related properties.

What Are the Main Technical Properties of VG30 Bitumen?

VG30 is identified within a viscosity-based specification, but viscosity is not the only property considered when evaluating the product. Compliance normally requires several test results to fall within the limits defined by the applicable standard.

Depending on the governing specification, buyers may need to review viscosity, penetration, softening point, flash point, solubility, ductility or related properties, and changes after simulated aging.

Which Tests Are Used to Evaluate VG30 Bitumen?

Laboratory testing is used to verify whether a VG30 binder complies with the required viscosity-grade specification. The exact test program depends on the applicable standard, project requirements and contractual quality criteria.

For a broader explanation of commonly used laboratory tests, see Dejpa’s guide to bitumen quality control tests .

Where Is VG30 Bitumen Used?

VG30 bitumen can be used as an asphalt binder in road construction and paving applications where the project specification requires this viscosity grade.

Its suitability for a particular pavement depends on the asphalt mixture, climatic conditions, traffic loading, pavement structure and the technical requirements defined by the relevant road authority or project specification.

Is VG30 Suitable for Hot Climates?

VG30 may be specified in projects where the required viscosity-grade binder is suited to the expected pavement and service conditions. However, it should not be described as a universally suitable grade for every hot-climate project.

Pavement temperature, traffic loading, asphalt mixture design and the applicable standard must be considered together. Where the project uses a performance-based specification, a PG requirement may also need to be evaluated instead of selecting a binder only by viscosity grade.

Is VG30 Used for Heavy-Traffic Roads?

VG30 can be specified for road projects with significant traffic loading, but traffic intensity alone does not determine the correct binder grade.

Axle loads, vehicle speed, pavement temperature, asphalt mixture design, pavement structure and the governing specification should all be reviewed. In more demanding conditions, another viscosity grade, a Performance Grade binder or a modified binder may be required by the project.

How Does VG30 Compare with 60/70 Bitumen?

VG30 and 60/70 can both be used as paving binders, but they belong to different grading systems. VG30 is classified through viscosity-related requirements, while 60/70 is classified primarily by penetration range together with other specified properties.

Because the two grades are defined differently, they should not be treated as exact equivalents. A project specifying VG30 should be checked against the relevant viscosity-grade standard rather than assuming that 60/70 can be used as a direct substitute.

VG30 vs VG10 and VG40: What Is the Difference?

VG10, VG30 and VG40 are different viscosity grades. In general terms, the grade designation reflects different viscosity requirements, which means the binders are intended to meet different specification limits under the relevant standard.

The correct choice among these grades should be based on the project specification and service conditions rather than on the grade number alone.

How Should Buyers Choose Between VG10, VG30 and VG40?

The correct viscosity grade should be determined from the applicable road authority or project specification. Climate, pavement temperature, traffic intensity, asphalt mix design and pavement function should all be reviewed before the final grade is confirmed.

What Is the Difference Between VG30 and PG Bitumen?

VG30 and PG bitumen belong to different classification systems. VG30 is part of the viscosity grading system, while Performance Grade bitumen is classified through performance-related requirements linked to pavement temperatures and laboratory testing.

The two systems should not be converted through a simple one-to-one relationship. If a project specifies a PG binder, compliance must be demonstrated according to the required Performance Grade standard.

For more information, see Dejpa’s guide to PG bitumen .

Can 60/70 Bitumen Be Directly Converted to VG30?

A simple direct conversion should not be assumed. Penetration grading and viscosity grading classify binders using different primary criteria and specification limits.

Even if two products appear similar in some conventional properties, the supplied binder should comply with the grading system and limits stated in the project documents.

Why Is the Certificate of Analysis Important for VG30?

The product name alone is not enough to confirm compliance. A Certificate of Analysis helps the buyer compare measured test results with the technical limits required by the applicable standard or project specification.

Depending on the specification, the COA may include viscosity and other relevant quality-control results. Buyers should review the reported values, test methods and product identification rather than relying only on the VG30 designation.

For practical guidance, see Dejpa’s guide to reading a Bitumen Certificate of Analysis .

What Should Buyers Check Before Ordering VG30?

Before placing an order, buyers should confirm that VG30 is the grade required by the project and that the applicable specification, quality limits and supply conditions are clearly defined.

What Information Should Buyers Include in a VG30 RFQ?

A complete VG30 request for quotation should provide enough technical and commercial information for the supplier to understand the exact product requirement and prepare an accurate offer.

What Are Common Mistakes When Buying VG30 Bitumen?

Procurement problems often come from incomplete technical information or from treating different bitumen grading systems as direct equivalents.

Frequently Asked Questions About VG30 Bitumen

What does VG30 mean in bitumen?

VG stands for Viscosity Grade. VG30 is one of the grades within a viscosity-based classification system used for paving bitumen.

What is VG30 bitumen used for?

VG30 can be used as an asphalt binder in road construction and paving projects where the applicable specification requires this viscosity grade.

Is VG30 the same as 60/70 bitumen?

No. VG30 belongs to the viscosity grading system, while 60/70 belongs to the penetration grading system. They should not be treated as exact technical equivalents without checking the relevant specifications.

Can VG30 replace 60/70 bitumen?

Not automatically. If the project specifies 60/70, the binder should comply with the required penetration-grade specification. Any substitution with VG30 should be technically evaluated and approved according to the project requirements.

Is VG30 suitable for hot climates?

VG30 may be specified for projects in warm conditions, but climate alone does not determine the correct grade. Pavement temperature, traffic, asphalt mixture design and the applicable standard should also be considered.

Is VG30 suitable for heavy traffic?

It can be used where the project specification requires VG30, but heavy traffic should be evaluated together with axle loading, vehicle speed, pavement temperature, pavement structure and performance requirements.

What is the difference between VG30 and VG40?

VG30 and VG40 are different viscosity grades with different specification requirements. VG40 is a higher viscosity grade, but the appropriate choice depends on the project standard and service conditions.

What is the difference between VG30 and PG bitumen?

VG30 is classified through a viscosity grading system, while PG bitumen is classified according to performance-related requirements associated with pavement temperatures and laboratory testing.

What documents should buyers request for VG30 bitumen?

Depending on the project, buyers may request the relevant TDS, Certificate of Analysis, laboratory test results, inspection documentation and other technical documents required by the contract or specification.

Final Considerations

VG30 is a viscosity-grade paving binder used where the applicable specification requires this classification. Its technical identity should be evaluated according to the viscosity-grade standard rather than by assuming direct equivalence with penetration grades such as 60/70.

Selecting VG30 should involve more than choosing a familiar grade name. Climate, pavement temperature, traffic conditions, asphalt mixture design, project specifications and required quality-control results all contribute to the final binder requirement.

For procurement, buyers should confirm the applicable standard, review TDS and COA data against project limits, and clearly define quantity, packaging, destination, inspection and documentation requirements before placing an order.