Our Clients

We serve:

  • Engineering firms
  • Public Works
  • Contractors
  • Suppliers
  • Legal Industry

Engineering Firms

Complete asphalt consulting

We have been testing asphalt for over 30 years. Our expertise includes:

  • Asphalt emulsions
  • Cutbacks
  • Asphalt cements

Our extensive experience with surface treatments and hot-mix evaluations includes over 30 years experience in volumetric analysis of hot-mix asphalt. Our laboratory is well equipped for running Marshall, Hveem and Superpave mix designs.

Another area of special emphasis is the technology of pavements seals which are used to prolong pavement life. We provide designs for:

  • Slurry seal
  • Micro surfacing
  • Chip seals

As we have a Hveem compactor, we can also run R-values on soils.

Public Works

Quality is Our Job One

Even the simplest asphalt mistake can turn costly. Our accurate, reliable and quick quality-control and quality-assurance testing services can help keep you from going down that road.

We have been testing asphalt for over 30 years. We test:

  • Asphalt emulsions
  • Cutbacks
  • Asphalt cements

Our extensive experience with surface treatments and hot-mix evaluations includes over 20 years experience in volumetric analysis of hot-mix asphalt.

Chip Seal Design

Many municipalities have discovered the benefits of chip seal resurfacing. Petroleum Sciences will help you develop an effective chip seal program – and monitor the results.

Education

Education is key to running a high-efficiency asphalt program. An engaging and knowledgeable seminar leader, Petroleum Sciences founder Bob Dunning knows quality-control statistics inside and out and can help your staff stay up on the latest developments in the field.

Forensics

When a project goes sour, it’s good to have Bob Dunning in your corner. He is:

  • An experienced chemist with a deep understanding of asphalt and related issues
  • Knowledgeable regarding courtroom procedures
  • A predictable and dependable witness

The majority of cases in which Mr. Dunning is involved settle before going to trial.

Contractors

Paving or Slurry Seal

Whether you specialize in paving or slurry seal, we’ll back you up with a full range of services:

  • Mix design
  • Problem solving
  • Forensics

Mix Designs

Paving

Our mix-design services include:

  • Marshall Design
  • Hveem Design
  • Superpave Design

Slurry Seal

We can help you with all your Slurry Seal and micro-surfacing design needs.

Problem Solving

The ability to solve field problems comes from years of experience and thorough knowledge of the materials used. In particular, with the use of statistical oriented specifications an in depth understanding of statistics is vital. We are able to fulfill that need.

Forensic

Mr. Dunning has had considerable experience in resolving legal problems. However we only accept projects as an expert in which he has a thorough and in depth knowledge of the subject. Most cases on which h he has been used as an expert have been settled after his deposition.

Suppliers

Accurate, next-day testing keeps your project on track

Testing

Call Petroleum Sciences when the job requires a quick turn-around and dead-accurate test results. We’ve been testing asphalt materials for over 30 years; we know how to do it right.

Research and Development Studies

A chemist and asphalt specialist of international standing, Bob Dunning knows how to analyze complex data and find in it practical solutions to real-world problems.

Forensics

Bob’s background qualifies him as an ideal expert witness. He:

  • Has the unique ability to communicate complicated information to a non-specialist audience
  • Understands courtroom procedures
  • Is a predictable and dependable witness

Bob’s expertise is one reason the majority of the cases in which he is involved settle before going to trial.

Legal Industry

Make sure your expert witness knows more than asphalt

To be effective, an expert witness must combine scientific rigor with an understanding of the legal process.

He must be able to isolate the evidence that’s buried in the numbers and use it to create compelling arguments that are strong enough to stand up to scrutiny.

He must be a good communicator, who understands human nature and can explain complex concepts to a lay audience.

He understands the intricacies of the legal system and keeps a cool head under pressure. He knows the importance the appropriate response in a complicated and contentious setting.

Bob Dunning brings the role of expert witness scientific rigor, an understanding of the legal process, and an appreciation of human nature. He is a predictable and dependable witness, and many legal teams have benefited from his participation.

The majority of cases in which he is involved settle before trial.

International asphalt specialists since 1974

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