Hot Mix Asphalt – Martin Companies

3 ASPHALT PAVEMENT HMA is a state of the art mix design system which replaced the old standard Marshall method of mix design. There are four important HMA parameters which the owner must specify in order to ensure the proper design. 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from mud or other foreign matter before placing the new HMA pavement. This may include patching, leveling, wedging, and cleaning. The surface is Jan 20, 2016 · In the note to engineer below Table 3 Aggregate – HMA Pavements, it states “The Engineer is only to specify Gradation 3 for leveling course, airfield shoulders, and roadways.” When choosing which gradation to use we recommend keeping minimum lift thickness to 4 x nMAS. However this is a recommendation, not a requirement. P-401 HMA Surface Course. Airport pavement design of HMA surface courses is outlined within the Advisory Circular AC 150/5370-10E Part V. The mix consisted of a #7 stone, #8 stone, #9 stone, #10 screenings, and bag house dust. Also, the asphalt binder was a PG 64-22. Mar 20, 2020 · thickness requirements, if a thicker surface layer or overlay is called for, then a HMA layer of a predetermined thickness should be placed prior to placing the RHMA surface course. The minimum thickness for RHMA-G is 0.10 foot. RHMA layer should only be placed over a HMA or concrete surface course and not on an aggregate base. Do Crushed HMA for use as Subbase : 127 pcf — — Base Course . 145 pcf 155 pcf : 150 pcf . Intermediate Course 147 pcf 155 pcf 150 pcf Surface Course 147 pcf 160 pcf 155 pcf . The following densities should be used for estimating quantities of granular material. Table 2: Granular Material Densities . Material English. Granular Subbase . 135 pcf

Hot Mix Asphalts 101 - New Jersey

Anchor: #i1013593 Section 3: Flexible Base Selection Anchor: #i1013598 3.1 Introduction. The base course in a pavement structure serves multiple functions, but the primary function is to supply foundational support and capacity to the pavement structure; to provide a stable course to minimize flexural tensile stresses in surface layers; and to dissipate stresses induced by traffic loading to Course Schedule. Each Hot Mix Asphalt Testing course will begin at 1:00 pm on Day 1 unless otherwise stated, with check-in and registration from 12:30 pm to 1:00 pm. Classroom and laboratory instruction will be provided on Day 1 and Day 2. The polymerized HMA Surface Course, IL 9.5 FG, Mix "D", N90 summary of quantities on page 3 is 1067 TN. The paving schedule on page 6 shows the quantity is 1067 SY. It appears that the 1067 SY quantity is correct which would mean the 1067 TN quantity would be considerably less. Jun 27, 2017 · Do not place HMA plant mix on any wet surface or when the surface temperature is less than specified in Table XXX, Temperature and Seasonal Requirements, or when weather conditions will prevent proper handling or finishing of the HMA mixtures. Is the minimum surface temperature being observed based on the course thickness in Table XXX(applies

Binder Course means a hot mix asphalt (HMA) course between a surface course and either a base course or stabilized base course, an existing pavement, or another HMA binder course. CCIL means the Canadian Council of Independent Laboratories. Designated Large Sieve (DLS) means the sieve size specifically designated for each mix type for

This base course is then paved over with an HMA surface course. Full depth reclamation (FDR). FDR is a form of CIPR in which the entire pavement structure is pulverized and recycled. Typically some form of BST or HMA overlay is placed on top of the recycled material. PAVEMENT DESIGN INFORMATION 4. Top course shall be placed between April 15 and October 31. When placing Top Course HMA outside the seasonal limitations one is to provide a limited warranty against defects in such work. Performance of the warranty shall work in accordance with Materials Procedure (MP) 402-01, Warranty Requirements for Hot Mix Asphalt (HMA) Top Course. 5. Surface King Tack & Prime Coat Applications With Asphalt The purpose of tack coat is to ensure bond between the existing pavement surface and a new pavement surface. A loss of bond between HMA layers can cause crescent-shaped slippage cracks or debonding to occur, leading to reduced pavement life. Prior to tack application the surface should be clean, dry and free from loose material. Hot Mix Asphalt 1 - Generic Reviews - Construction