The written certification exam is intended to test a technician’s knowledge about asphalt binder testing procedures and proper laboratory practices required to effectively conduct testing for the AASHTO M320 (PG) specification. Because no technician operates, or should operate, without access to standards and other laboratory documents, the examination will be open-book and open-note.
The written exam consists of 60 questions in a multiple choice format covering various knowledge areas. These knowledge areas are broken down into four parts:
The technician must score a minimum of 70% on each of the four sections and an 80% on the exam as a whole. For example, it is mathematically possible to fail the written exam with a score of 93% overall by scoring 60% on section three and answering all of the other questions on the exam correctly. This ensures a minimum comprehension in all areas of the course content.
Questions cover both procedural and conceptual elements. The procedural questions are intended to evaluate the technician’s knowledge of the published standards, while those covering concept gauge the technician’s ability to recognize suspect data. There are randomly selected questions from each knowledge area, designed to adequately cover certification topics. As such, the written examination has many different versions. The examination must be completed in two (2) hours.
|Laboratory Proficiency Exam|
The laboratory proficiency examination is a hands-on demonstration by the student that he/she can properly conduct the AASHTO M320 asphalt binder tests and use good laboratory practices. This portion of the exam is a one-on-one demonstration performed by the student for the certification examiner. The examiner evaluates the student’s performance of each lab procedure against a set of minimum performance criteria. The student must adequately demonstrate each procedure to pass.