Asphalt & Pavement Service | McConnell & Associates
Asphalt Testing - HMA Lab Supply specializes in laboratory equipment and supplies for the asphalt and aggregate testing industry and has been in operation for over 20 years. 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. Hot-mix asphalt concrete (commonly abbreviated as HMA) This is produced by heating the asphalt binder to decrease its viscosity, and drying the aggregate to remove moisture from it prior to mixing. Mixing is generally performed with the aggregate at about 300 °F (roughly 150 °C) for virgin asphalt and 330 °F (166 °C) for polymer modified Hot mix asphalt is known by many different names such as hot mix, asphalt concrete (AC or ACP), asphalt, blacktop or bitumen. For clarity, this Guide makes a conscious effort to consistently refer to this material as HMA. HMA is distinguished by its design and production methods (as described in this Guide) and includes Chicagoland paving contractors now have a choice for all of their hot mix asphalt (HMA) needs. MAT Asphalt LLC is a new facility in the Central Manufacturing District at 4010 S. Damen Avenue in Chicago. We’re deeply involved in the community and operate a state-of-the-art environmentally conscious plant.
asphalt binder and HMA. 3. It improves resistance to fracture growth (i.e., it improves fracture toughness) at low temperatures. 4. It favorably alters oxidation kinetics and interacts with products of oxidation to reduce their deleterious effects. 5. It alters the plastic properties of clay fines to improve moisture stability and durability.
About Hot Mix Asphalt Construction Every year, the State of California invests millions of dollars in construction of hot mixed asphalt (HMA), previously known as Asphalt Concrete (AC), pavement. Producing high quality HMA pavement requires a good partnership between Caltrans, the plant producing the HMA material and the contractor placing the HMA. Hot Mix Asphalt (HMA) is a combination of aggregate and asphalt binder mixed at an elevated temperature to form a hard, strong pavement construction material. HMA allows mixes to be designed in the laboratory at four different levels (50, 75, 100, and 125 gyrations) simulating four different 20-year traffic levels in the field.
HOT MIX ASPHALT PAVEMENT DESIGN GUIDE
11.1 Hot Mix Asphalt Plants - US EPA 11.1 Hot Mix Asphalt Plants 11.1.1 General1-3,23, 392-394 Hot mix asphalt (HMA) paving materials are a mixture of size-graded, high quality aggregate (which can include reclaimed asphalt pavement [RAP]), and liquid asphalt cement, which is heated and mixed in measured quantities to produce HMA. Aggregate and RAP (if used) constitute over 92 percent Volumetrics in Asphalt Mixtures HMA designed for moderate to heavy traffic may not pass the VFA requirement with asphalt content of a mix is highly dependent on aggregate characteristics such as gradation and absorptiveness. Aggregate gradation is directly related to optimum asphalt content. The finer the mix gradation, the larger the total surface area of the Chapter 4: Construction Details, Section 39: Asphalt