Hot-Mix Asphalt Sampling Techniques and Methods of Acceptance - State DOT's Practice

摘要: Hot-mix asphalt (HMA) sampling is a critical step in quality control and assurance (QC/QA) programs to ensure that the tested material representative of installed product. Samples HMA Illinois are currently taken from truck at plant. This method allows for quick turnaround time since QC laboratory usually located However, it may be difficult obtain sample most top pile on side closest platform. In addition, this does not account any additional absorption taking place during transportation placement. The concept moving location job site offers potential address weaknesses cited above. there number different approaches, each with advantages disadvantages. objective study was produce review successful methods practices used production installation. included visiting other states collecting sufficient data draw final recommendation optimum technique adopted Illinois. conclusion field visits behind paver being successfully conducted by many without difficulty. Based study, roadway procedure Michigan DOT recommended possible implementation addition technique, sealed bags Iowa used, if necessary, safely transport samples laboratory.