HMA Mix Characteristics Let’s start with the basics – A layer of HMA pavement has 3 components: 1) Aggregate 2) Asphalt Binder 3) Air Typical % By Mass: 94 - 96 4 - 6 0 Typical % By Volume: 81 - 85 11 - …
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. Pavement Manual: Hot-Mix Asphalt Pavement Mixtures A variation on traditional hot-mix asphalt is warm-mix asphalt (WMA). WMA technologies are processes or additives to HMA that allow mixture production and placement to occur at temperatures (30-100ºF) lower than conventional HMA without sacrificing performance. Pavement Interactive - Pavement Interactive
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.
NEW YORK STATE DEPARTMENT OF TRANSPORTATION … pavement cores are required under other HMA specifications. Random sampling is a process of selection which neither intentionally nor inadvertently favors any particular sample. This section also describes the proper method for preparing the pavement cores samples for security and transportation.
CHAPTER 630 FLEXIBLE PAVEMENT HMA
The HMA pavement shall be constructed in courses as shown on the plans and as directed on the prepared or existing base in accordance with these specifications and in close conformity with the lines, grades, compacted thickness and typical cross section as shown 16 Different Type Of Pavement Cracks And How To Repair Alligator (Fatigue) Cracking. Description: A series of interconnected cracks caused by fatigue failure … Chapter Fifty-four PAVEMENT DESIGN design procedures for hot-mix asphalt (HMA) overlay of rubblized PCC pavements, and design procedures for composite pavements. A flowchart is presented in Chapter 54 (Figure 54-1.A) that will assist in determining the appropriate structural pavement design methodology, pavement type, and design criteria. In