Asphalt Lab Manual
LABORATORY MANUAL. Asphalt binder and ovens will be heated to temperatures of. Because the specific gravity of asphalt binders changes with.
The ductility test is measure of cohesiveness and elasticity of the bitumen. Bitumen is binder of pavement construction, which binds from ductility thin films around the aggregates. This serves as satisfactory binders in improving the physical interlocking the aggregates. The binder material that does not possess sufficient ductility would crack and thus provides previous pavement surface. Bitumen paving engineers would however want that both test (penetration and ductility test) requirements be satisfied in the fiend jobs. Penetration and ductility cannot be replaced each other.
Asphalt Lab Manager
The ductility is expressed as the distance in cm to which a standard briquette of bitumen can be stretched before the thread breaks. The test is conducted at 27 + 0.5°C and rate of pull of 50 + 2.5mm per minute. Pour the bitumen in the m old and take care not to disarrange the pieces of the m old. Pour the material in a thin stream back and forth from end to end of the mold until the mold is more than level full. Allow to cool in air at temp. 15 - 30°C for 35 min. Then, place it in the w ater bath at test temperature (25°C) for 35 min.
Remove the test specim ens from the water bath and imm ediately trim the excess material with the trimming tool to make the molds just level full. Place the trimmed specimen and mold in the water bath at the specified temperature (25°C) for 90 min. Then, remove the specimen from the pl ate, avoiding any bending of the specim en.
The Superpave PG asphalt binder system has received widespread acceptance. However, PG system test methods do not alone provide all the information need to most effectively perform these tests. Mcintosh mc 2125 service manual.
Asphalt Lab Manager
The Asphalt Institute is pleased to offer the 3rd Edition of MS-25, Asphalt Binder Testing, written as a single resource to supplement PG test methods and standardize best practices to interpret and follow AASHTO and ASTM standards. Drawing on practical laboratory expertise of AMRL, FHWA, Asphalt Institute and leading industry experts, MS-25 is the comprehensive link between standards and the technician - providing essential information needed to perform PG system tests. It also covers terminology, handling asphalt binders, temperature measurements and an introduction to the PG system. The information presented is current as of the most recent AASHTO manuals. This manual is an excellent reference tool for senior lab technicians and for training new technicians. MS-25 is also designed for technicians and laboratories seeking certification or accreditation.
Asphalt Testing Manual Pdf
This book is ideal for the classroom, as well as research faculty use, laboratory reference and as a companion to published standards.