higher type mix base widening asphalt iowa dot

Staff to direct and witness the sampling and perform G mb measurementĭuring a time agreed between the Engineer and the Contractor. The outside 2 feet would then beĭeducted from the field voids lot quantity). For a 14-foot paving width on aġ2-foot wide lane, a core location could randomly fall exactly 12 feet fromĬenterline, assuming a two lane roadway. Than 1 foot from the unconfined edge of a given pass of the placing equipment,Įxcept when the width of a single pass of the paver exceeds the width eligibleįor random sampling by more than 1 foot (i.e. Lane unless otherwise determined by the Engineer. This width shall be the nominal width of the travelled Shall coincide with the width eligible for PWL incentive/disincentive. For class I compaction, the width subjected to the random sampling Project and anytime that a correlation problem occurs.ġ. Sample to cool) for at least one day at the beginning of production to aid inĪny future investigation of non-correlation that may arise throughoutĬalibrate the Rice pycnometer at the beginning of a Reasonably allow, test samples immediately “hot-to-hot” (without allowing the Three production days (small quantities excluded) and conditions/resources When production of a bid item is expected to exceed The total estimated daily production is divided intoĮqual sublots based on the number of samples determined from Table 2303.03-4.Īpproximate sublot size = 4501/5 = 900 tons The specific ton or truckload to begin sampling will beĭetermined by the Engineer using the spreadsheet ( ). Samples taken for acceptance purposes until the contractor’s results have been GyratoryĬompactors not utilized in the independent assurance testing ( IM 208 Appendix C) will not be allowed on QMA projects without permission from the District

Performed in qualified labs by certified technicians. Informational purposes only and do not need to be reported.ĭone by the Contractor that is used as part of the acceptance decision shall be The results of testing done on additional samples will be for Uncompacted asphalt mixture may be taken by the contractor to provide better To one or more of the paired samples tested by the Contracting Authority willīe used for specification compliance. Samples as directed and witnessed by the Engineer and validated by comparison Only the information obtained from random Refer to IM 213 Appendix C for individual IM 510 Method of Design of Hot Mix Asphalt MixesĪppendix A contains an outline of the responsibilities requiredįor all parties. IM 501 Equations and Example Calculations IM 357 Hot Mix Asphalt (HMA) Mix Sample for Test Maximum Specific Gravity of Hot Mix Asphalt (HMA) Mixtures IM 350 Method of Test for Determining the IM 338 Method of Test to Determine Asphaltīinder Content & Gradation of Hot Mix Asphalt (HMA) by the Ignition Method IM 336 Reducing Aggregate Field Samples to TestĬompleted Courses of Base, Subbase & Hot Mix Asphalt IM 325G Method of Test for Determining theĭensity of Hot Mix Asphalt (HMA) Using the Superpave Gyratory Compactor (SGC) IM 325 Compacting Asphalt Concrete by the IM 323 Method of Sampling Asphaltic Materials IM 322 Sampling Uncompacted Hot Mix Asphalt IM 321 Method of Test for Compacted Density of Hot IM 320 Method of Sampling Compacted Asphalt IM 301 Aggregate Sampling & Minimum Size of IM 216 Guidelines for Validating Test Results IM 208 Materials Laboratory Qualification IM 204 Inspection of Construction Project Sampling Mixtures on Quality Management of Asphalt (QMA) projects.

Procedures for monitoring and controlling plant-produced asphalt concrete This IM describes the Quality Control/Quality Assurance (QC/QA)

Higher type mix base widening asphalt iowa dot