About Us



Amir Ghavibazoo, PhD

Pavement Engineering & Asphalt Technology

Dr. Amir Ghavibazoo is the Senior Pavement Engineer at Twining, Inc. He directs and works on pavement design, highway design, engineering specifications, and consulting services. He joined Twining in 2014 after graduating with his Ph.D. in Civil and Environmental Engineering from North Dakota State University. He also holds a Master of Science Degree in Railways Engineering from the Iran University of Science and Technology in Tehran.  During his graduate study, Amir obtained great knowledge and expertise on Pavement Management Systems (MicroPaver), Pavement Evaluation and Pavement Rehabilitation Strategies. He is an expert in calculating Pavement Condition Index (PCI) through visual inspection following the United Stated Army Corps of Engineers’ methodology as well as conducting Life Cycle Cost Analysis (LCCA) rehabilitation strategies for pavements.

Amir has extensive practical experience in asphalt pavement engineering including pavement design, rehabilitation, preservation, pavement management, materials, and construction. His experience includes the characterization of rubberized asphalt binders and developing mix designs following Superpave specifications. Additionally, he has extensive experience with advanced performance testing of asphalt binder including Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR) and other asphalt binder quality control tests. He works closely with cities and government agencies to develop unique and specialized mix designs, pavement constructions inspections, and pavement design solutions. Amir also serves on several technical committees in California helping to develop new specifications and update existing ones. He worked on many projects over the years such as asphalt rubber projects, Superpave, investigations of pavement distress, and green technologies in pavement construction.

Skip to main content