คอนกรีตและวัสดุก่อสร้าง
เอกสารมาตรฐาน
สหรัฐอเมริกา
AASHTO
M 346-22
Materials for Ultrathin Bonded Wearing Course
2022
4
HM42-2022 part 1
This standard covers the requirements for polymer-modified emulsified asphalt, performance-graded asphalt binder, mineral aggregate, mineral filler, and additives used in an ultrathin bonded wearing course. An ultrathin bonded wearing course, usually 1/2 to 1 in. (12.5 to 25.4 mm) thick is placed on existing pavement surfaces using specially designed paving machines.