PDF 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
PDF 3 Asphalt Mixture Plant Operations - Kide Fm
HOT MIX ASPHALT PLANT OPERATIONS An asphalt mixture plant is an assembly of mechanical and electronic equipment where aggregates, recycled materials or other additives are blended, heated, dried and mixed with binder to produce asphalt mixture meeting specified requirements. The plant may be stationary (located at a
PDF Walker Aggregates Inc. Asphalt Plant Operations
Asphalt Plant Operations Walker Aggregates Inc. Hot Mix Asphalt A hot mix asphalt plant is basically a large mixing device that mixes different sizes of aggregate with asphalt cement. The process: Arrival • When a dump truck arrives at the plant, its box is sprayed with biodegradable citric-based degreaser so the asphalt doesn't stick to ...
PDF Hot Mix Asphalt Production - University of Memphis
Typical Batch Plant (Taken from The Asphalt Institute Manual ES-1, Second Edition) 1. Cold Bins 2. Cold Feed Gate 3. Cold Elevator 4. Dryer 5. Dust Collector 6. Exhaust Stack 7. Hot Elevator 8. Screening Unit 9. Hot Bins 10. Weigh Box 11. Pugmill 12. Mineral Filler 13. Hot AC Storage 14. Weigh Bucket Major Batch Plant Components
PDF Hot-Mix Asphalt Plant Operations
typical batch plant is depicted in Figure 5-1; the major plant components are shown in Figure 5-2. The batch plant tower consists of a hot elevator, a screen deck, hot bins, a weigh hopper, an asphalt cement weigh bucket, and a pugmill. The flow of materials in a batch tower is illustrated in Figure 5-3. The aggregate used in the mix is removed ...
PDF Asphalt and the production process. - alexandriava.gov
before mixing with asphalt cement. Step 4 : Emission Control System Bag House Collectors filter fine sand and dust particles from the exhaust air. Step 5 : Storage Silo Holds hot mix asphalt (HMA) until its time to load onto trucks for paving jobs. There are some 3,600 hot mix asphalt plants in the U.S.
PDF Chapter 8 Asphalt Plant Supervisor and Operations
Chapter 8 Asphalt Plant Supervisor and Operations ... Table 8-1 — Suggested asphalt temperature ranges. ... 3.0.0 TYPES of ASPHALT PLANTS, OPERATIONS, and
PDF Section 401 Asphalt Mixing Plant Requirements
SECTION 401 ASPHALT MIXING PLANT REQUIREMENTS . 401.01 DESCRIPTION. Provide and maintain a plant and all equipment necessary to produce and test asphalt mixtures. 401.02 EQUIPMENT. 401.02.01 All Asphalt Mixing Plants. Ensure that all asphalt mixing plants are inspected and approved by the Department before initial use and a minimum of once
PDF OMT Asphalt Plant Inspection Checklist
OMT Plant Inspection Checklist Revised February 2012 Page 2 6. Are all pipe links and fittings steamed, oil jacketed, or otherwise properly insulated to prevent heat loss? _____ 7. Is storage tank capacity such as to ensure continuous operation of the plant and uniform temperature of the asphalt cement when it is mixed with the aggregate?
PDF The Environmental Impact of Asphalt Plants
peacefully with asphalt plants. These facilities are in urban, suburban, and rural areas, and most of them are known as good neighbors who are engaged with their community and dedicated to sustainable operations. However, there is a lot of misleading and often daunting information about asphalt plants and asphalt products.