VG 30 Bitumen: Properties, Uses and Applications in Road Construction

By Art Infrastructure Pvt. Ltd. | Bitumen Manufacturers & Suppliers

If you ask a highway contractor in India which bitumen grade shows up on most of his jobs, the answer is usually VG 30. It sits right in the middle of the paving grade range, strong enough for heavy traffic and still easy to work with in a normal hot mix plant.

In this blog we'll go through what VG 30 bitumen actually is, the properties that matter on site, how it differs from VG 10 and VG 40, and where it gets used. We'll also share a few practical points on storage and on choosing a supplier, based on what we see at Art Infrastructure every day, where VG 30 is one of our core paving grade products.

What is VG 30 bitumen?

VG 30 is a paving grade bitumen classified by viscosity under the Indian Standard IS 73:2013. The "VG" stands for viscosity grade, and the number 30 is a rough indicator of how thick the binder is at 60°C. A higher number means a stiffer binder.

Before this system came in, most Indian roads used penetration grades like 60/70 and 80/100. The viscosity grading replaced them because penetration alone doesn't tell you how the bitumen behaves in hot weather. Viscosity at 60°C, which is close to the surface temperature of a road in peak summer, gives a much better picture.

VG 30 comes from the vacuum distillation of crude oil. What's left at the bottom of the tower is processed, and sometimes blended, until it meets the grade requirements. It's a black, sticky, waterproof binder that holds stone aggregate together in a bituminous mix.

Key properties of VG 30

These are the values engineers look at first on a test certificate. The limits below are the ones listed in IS 73:2013 for the fresh (unaged) binder.

A few of these deserve a plain explanation. Viscosity at 60°C is the headline number, because it tells you how the binder will hold up when the pavement is baking in the sun. Ductility matters on the other end: a binder that is too brittle will crack as the road flexes and cools.

VG 30 also has good adhesion with most aggregates, and it is waterproof, which is a big part of why bituminous roads last. As always, the test certificate for your specific batch is what counts, so ask for it before the tanker is unloaded.

VG 30 vs VG 10 vs VG 40

The three grades are not rivals. Each one is picked for a climate and a traffic level, and the choice usually comes from the pavement design.

VG 10 is soft and works well in cold hills and on lightly loaded roads. If you need it, see our VG 10 paving grade bitumen.

VG 40 is the stiffest of the three and is chosen for expressways, runways and routes with a lot of commercial trucks. Details are on our VG 40 paving grade bitumen page.

VG 30 is the balanced one. It handles summer heat better than VG 10, and it is easier to compact than VG 40, which is why it became the default choice on most Indian highway projects.

Uses and applications in road construction

Most of the VG 30 that moves in India ends up in hot mix asphalt. It's the binder that coats the aggregate in the plant, and then it gets laid and rolled on the road. If you want to understand the difference between the binder and the finished mix, our short read on bitumen vs asphalt explains it well.

Here is where VG 30 typically goes in a pavement:

Beyond hot mix, VG 30 is also used for:

• National highways, state highways and major district roads
• City and urban roads with regular bus and truck movement
• Surface dressing and slurry seals
• Industrial yards, port roads and approach roads to airports and metro depots
• Maintenance and resurfacing work on existing roads

On some jobs VG 30 isn't enough on its own. Where the design calls for extra elasticity or rut resistance, engineers switch to Polymer Modified Bitumen (PMB) or Crumb Rubber Modified Bitumen (CRMB). For tack coats and surface treatments, bitumen emulsions such as Cationic Bitumen Emulsion SS1 and Micro Surfacing Emulsion do the job. If you buy the mix rather than the binder, have a look at our hot mix bitumen and asphalt bitumen pages.

Storage, handling and supply

VG 30 is a hot-handled material. It's stored and moved in heated, insulated tanks, and it gets pumped or delivered in bulk tankers rather than being poured from a can. A few habits save a lot of trouble on site:

• Keep the temperature steady. As a rough guide, storage and mixing sit in the 150 – 165°C range, but follow the mix design and the supplier's advice for your job.
• Don't overheat it. Holding bitumen too hot for too long ages it and hurts the final road.
• Keep water out. A wet tank or a wet pipe can make hot bitumen foam and spill.
• Check the paperwork. Every dispatch should come with a test report that matches the batch.

The logistics side matters just as much as the product. A tanker that arrives late can stop a paving crew for a whole shift. At Art Infrastructure we keep storage at Raigad in Maharashtra, Pipavav in Gujarat, New Mangalore in Karnataka and Haldia in West Bengal, so material can be dispatched from a point that's close to the project. We also run our own bitumen tanker fleet for timely delivery across India, and our plants are spread over Jharkhand, Odisha, Punjab, Bihar, Chhattisgarh and Madhya Pradesh.

How to choose a VG 30 supplier

Price is the first thing everyone compares, but it shouldn't be the only one. A cheap tanker of off-spec bitumen can cost you much more in rework later. Here's what we'd check before placing an order:

• Grade and standard. The material should meet IS 73:2013, and the supplier should be happy to show you that.
• Test reports. Ask for a recent report from a proper lab. You can see how we handle this on our certificates, laboratory and test report pages.
• Delivery capability. Can they deliver in bulk, on your schedule, to your plant or site?
• Track record. Look at the projects they've supplied. Our client list covers highway and infrastructure work across several states.
• Range of products. If your project later needs PMB, CRMB or emulsion, one supplier for everything makes life easier.

Art Infrastructure was formed in 2013, and our director, Mr. Rajesh Tiloda, a civil engineer, brings more than 20 years of experience in bitumen and its derivatives. You can read more about us. If your work is in Maharashtra, the Mumbai supply page and the Maharashtra supply page show how we serve the region, and contractors in the east can see the Jharkhand page.

Quick answers

Is VG 30 the same as 60/70 bitumen? No. 60/70 is the older penetration grade. VG 30 is graded by viscosity under IS 73:2013 and is used in its place on most Indian road projects. If you still need the older grade, we also supply 60/70 penetration grade bitumen.

Which is better, VG 30 or VG 40? Neither in general. VG 40 suits very heavy traffic and hot stretches, while VG 30 is the balanced choice for most highways and city roads. Your pavement design decides.

Can VG 30 be used in cold regions? It's mainly picked for hot and temperate climates. For colder areas, designers usually go for VG 10.

Is VG 30 bitumen the same as asphalt? No. Bitumen is the binder, and asphalt is the finished mix of bitumen and aggregate.

Final word

VG 30 earns its place because it's dependable. It resists rutting in summer, it's easy to handle in the plant, and it suits the kind of traffic that most Indian roads carry. The key is to buy it from a source that can show you test reports and deliver on time.

If you're planning a project and need VG 30 paving grade bitumen, send us your requirement through the contact page, call +91-9892113360, or write to artinfrastructure@gmail.com. You can also browse the rest of our product range or go back to the Art Infrastructure home page.