John Savastio Quality Control Manager Highway Materials, Inc.
[Pages:80]Contractor Quality Control
John Savastio Quality Control Manager Highway Materials, Inc.
Purpose and Learning Objectives
Contractor Quality Control
This session will explore the Contractor's responsibilities in controlling the quality of material, from the mix design procedure to pre-pave submittals to testing material during production.
The participants will learn:
? Tips in developing a mix design to maximize compaction and minimize
quality control issues ? Requirements in developing the Quality Control Plan (Section 100 of AC) ? Control Strip: differences between AC 150/5370-10G and 10H ? Required quality control testing in the lab ? Familiarization with ERLPM Appendix C Documentation ? Field Quality Control ? handling of road cores
We've Come A Long Way....
? Acceptance based on asphalt content / gradation, air voids
? Method based spec.
Investment in Staff, Labs and Equipment
Implementation of Quality Systems
? Testing frequencies ? Lines of communication ? Equipment maintenance ? Calibrations ? Proficiency programs
Contractor development of the JMF
? Meet Specified Properties
? Start by targeting mid-spec.
? Utilize resources effectively: "mutual fund" approach
? Maximize plant production and efficiency
Laboratory Design vs. Plant Production
? Design vs. production
? Capability of the Plant
? Gradation Variation
? Hot Bins ? Stockpile ? "Degradation" ? Volumetric Properties
JMF to Optimize Compaction
? Stability ? Correct Amount of Asphalt ? Substantial Roller Effort ? Effect of Natural SandRounded Particles
? Workability ? Low / High #200 ? Excess Coarse Aggregate
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