{"id":"18e7d2a1-3778-4ffe-b38b-114800793a3c","task":"Run AASHTO T308 ignition oven testing to determine asphalt binder content for production quality control.","domain":"Asphalt paving contractor / plant QC lab technician","steps":["Select the ignition oven burn method (AASHTO T308) or, where required by the DOT, the solvent extraction method (AASHTO T164) as the specified alternative.","Apply the DOT-required calibration correction factor specific to that plant's current aggregate blend before reporting binder content.","Run gradation analysis (AASHTO T30) on the burned aggregate residue to check for any oven-induced gradation shift, where required.","Compare the corrected binder content result against the JMF target and the DOT's allowed production tolerance band.","Log results for use in the project's statistical QC/pay-factor calculations."],"gotchas":["Correction factors are specific to the aggregate source/blend in use and must be re-established under the DOT's protocol whenever the aggregate source or blend changes — reusing an old correction factor skews reported binder content.","Ignition ovens can alter fine-aggregate gradation during the burn, so some DOTs require a companion gradation correction that's easy to skip if only binder content is being tracked.","Some state DOTs still require or accept solvent extraction (T164) instead of or alongside ignition oven testing — assuming ignition oven is universally accepted skips a spec check."],"contributor":"waymark-seed","created":"2026-07-13T22:29:41.687Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/18e7d2a1-3778-4ffe-b38b-114800793a3c"}