for designing HMA mixes using the recommended mix design method. This volume of the report, Volume III, includes the proposed changes/additions to the Item P-401 guide specification for the design of HMA mixes using the Superpave gyratory compactor. Sections from Item P-401 that do not contain recommended changes are not included in this document.
6. Page P-401-27, Hot Mix Asphalt (HMA) Pavements, add the following to the end of paragraph 401-8.1: “Item P-401-8.2 10” Bituminous Surface Course - per ton” PLANS 7.The new pavement section detail in Attachment ‘C’ is added to the contract documents. 8. Replace Sheet G-100 with Attachment ‘D’. standard thickness assuming 4 in HMA as wearing course + 5 in HMA (P-401) as stabilized base course + 6 in high quality granular base (P-209) as shown in Figure 2. The final thickness for the base layer was defined for each case of analysis (Aircraft mix, number of load repetition and subgrade CBR). Table 2 List of Evaluated Cases performance of HMA mixtures The objectives of this study were: 1. Conduct HMA mix design using recommended dosage rate and different mixing methods 2. Assess the laboratory performance testing on different types of fiber-reinforced HMA and identify the impact of fiber type. 9 ‐Airfield HMA Specifications 7 ‐‐‐‐FAA P‐401 ‐‐‐‐TrTrii ‐service UFGS 32 12 15.1315.13 ‐Generally Mandated if Federal Funds Used ‐Language Must Apply Across the Country ‐Represent ““HighHigh Wire Act” of Asphalt Paving In Both P 401 and UFGS 3232 12 15.1315.13
Hot-Mix Asphalt (HMA) 101 Description: Understanding the basics of hot-mix asphalt – its composition and the importance of proper transporting, placement and compaction – is a vital necessity for anyone involved in the construction or inspection of asphalt pavements.
In 2019, an airfield improvement project was completed to rehabilitate the existing asphalt surface of Runway 5/23. The project consisted of pavement milling to achieve minor surface grade correction, and overlaying the runway surface with two inches of P-401 HMA pavement. for designing HMA mixes using the recommended mix design method. This volume of the report, Volume III, includes the proposed changes/additions to the Item P-401 guide specification for the design of HMA mixes using the Superpave gyratory compactor. Sections from Item P-401 that do not contain recommended changes are not included in this document.
P-401-1 5/09 ITEM P-401 PLANT HOT MIX ASPHALT PAVEMENT (This Section may be replaced with Special A 16 by designer) DESCRIPTION. 401-1.1 This item shall consist of a surface course composed of mineral aggregate and asphalt cement mixed in a central mixing plant and placed on a prepared course according to these Specifications and shall
“Full depth blacktop included 8 inches of base course done in two lifts using 16,200 tons of P-401 HMA, and 4 compacted inches of surface course done in two lifts of 2 inches each. “For 400 feet, there was a transition from full depth rehabilitation to just a surface course,” Stayer continued. Jul 21, 2014 · AC 150/5370-10G: Part 5 – Flexible Flexible Surface Courses Item P-401 Hot Mix Asphalt (HMA) Pavements & Item P-403 Hot Mix Asphalt (HMA) Pavements (Base, Leveling or Surface Course) P401 & P-403 Hot Mix Asphalt Lift Thickness Guidance – 1.20.2016 (AC 150/5370-10G white paper) Hot Mix Asphalt (HMA) Percent Within Limits (PWL) and Single Test Acceptance (STA) Worksheets Instructions to Use PWL Program Important, please read the above instructions before saving and opening your worksheet. Airfield HMA mixes must meet U.S. Federal Aviation Administration (FAA) requirements of the P-401 specification as part of the grant requirements between the FAA and the airport. Many airfield dimensions, such as runway and taxiway widths, are based on aircraft wingspan. Overview Hot mix asphalt (HMA) pavement refers to the bound layers of a flexible pavement structure. Asphalt pavement material is a precisely engineered product composed of about 95 percent stone, sand, and gravel by weight, and about 5 percent asphalt cement, a petroleum product. Asphalt cement acts as the glue to hold the pavement together. Our HMA is mixed at our asphalt production in HMA (P-401) as s tabilized base course + 6 in high quality. granular base (P-209) as s hown in Figure 2. The final thickness. for the base layer was defined for each case of analysis Behavior of P-401 HMA Surface in Accelerated Pavement Testing at High Temperatures and Tire Pressures Navneet Garg , Ph.D. , M.ASCE ; Hasan Kazmee , A.M.ASCE ; and Russell Knieriem Download