StoneMatrix Asphalt StoneMatrix Asphalt (SMA), also called stone mastic asphalt, was developed in Germany in the 1960s to provide heavily trafficked roads with a durable, rutresistant wearing course using a gapgraded aggregate structure and a modified asphalt binder at elevated asphalt contents.
At one time it was thought that a prime coat was an essential element of good pavement construction. However, in recent years some engineers have eliminated the use of a prime, especially when asphalt layer(s) (surface and/or base) is 4 inches or more in thickness.
Hot mix asphalt is a proportioned mixture of dried aggregate and liquid asphaltic concrete cement used as roadway paving material. Aggregate is a graded mixture of crushed stone, sand and recycled asphalt paving. Liquid asphaltic concrete cement is a mixture of hundreds of organic compounds that remain after crude oil refining. There more than 150 asphalt plants in North Carolina with DAQ Air ...
Aggregate Storage HMA is a mixture of aggregate (crushed stone, gravel, and sand), and asphalt binder. Aggregates are usually stored in stockpiles as shown. Stockpiles may be covered to prevent rain from soaking the aggregate or aggregates may be stored in large silos or bunkers.
Towertype asphalt mixing plants 11 Soil mixing plant DS 50B and its modifications 12 Relocatable fastmountable plants 14 Components/basic parts of asphalt mixing plants 15 Modernization of bitumen equipment for asphalt mixing plant 25 Spare parts for asphalt mixing plants 27 Assembly and startadjusting of asphalt mixing plants 28
obtaining a mixture meeting the specification requirements and ensuring the best possible construction at a minimum cost to the State. VDOT employs a quality assurance program to ensure that quality asphalt concrete mixture s ( – hot mix asphalt [HMA], warm mix asphalt [WMA] and stone matrix asphalt [SMA]) are
Asphalt materials include Performance Graded (PG) Asphalt Binders, Asphalt Emulsions, Cutback Asphalt, Utility Asphalt,and Asphalt used for coating corrugated metal pipe. Hot mix asphaltused for INDOT specified pavements requires PG binders to be used for the asphalt material. This manual uses the term "binder" when referring to this material.
SP/SM10:140905 SPECIFICATION FOR DENSE GRADED AND STONE MASTIC ASPHALTS Page 3 of 30 1 General Scope This specification covers dense graded and stone mastic asphalt for roads and related applications. The areas covered by this specification include: a) Asphalt materials b) Asphalt mix design requirements
Standard Construction Specifications Division 40 – Asphalt Surfacing Revised 11/08 STANDARD CONSTRUCTION SPECIFICATIONS FOR ASPHALT SURFACING DIVISION 40 SECTION GENERAL Article Scope of Work The Work covered by these Specifications consists of providing all plant, labor, equipment
and asphalt concrete shall consist of crushed stone, crushed slag, or crushed gravel and fine aggregate, slag or stone screenings or a combination thereof combined with asphalt cement. NOTE: At the discretion of the Engineer, an intermediate mix may be designated as either a …
Jan 14, 2019· This hot mix asphalt is designed only with crushed stone and a few grains of sand in the mix. There are two major classifications of this type of mix: Opengraded friction course Air voids minimum requirement are 15%, and no maximum air void percentage is specified .
Asphalt plant is specifically designed to manufacture asphalt for road construction. It comes in mobile and stationary versions to fit varied needs of producers. All the plant equipment are carefully developed to ensure consistency in mix quality, and all processes including feeding, heating, drying, screening and mixing are seamlessly ...
Stone Matrix Asphalt is a gapgraded asphalt designed to maximize structural durability by providing stoneonstone contact and a stronger, modified asphalt binder. Whereas traditional asphalt pavements rely primarily on binder strength to resist deformation, the combination of stone contact along with increased binder strength present in SMA ...
MISCELLANEOUS HOT MIX ASPHALT (HMA) PATCHING MATERIALS SCOPE: This specification covers the requirements for Miscellaneous Hot Mix Asphalt (HMA) patching materials. The requirements of Section 401 Plant Production and Section 402 – Hot Mix Asphalt (HMA) Pavements shall apply except as modified below.
HOT MIX ASPHALT SECTION 401 PLANT PRODUCTION 4011 DESCRIPTION. The contractor is responsible for Quality Control (QC). QC is defined as all activities required to produce HMA that meets all specification requirements. The contractor will incorporate a Quality Control system for all plant production of hot mix asphalt (HMA) and assume
The ia Department of Transportation (VDOT) is firmly committed to the formation of a partnering relationship with the Contractor, all subcontractors, suppliers, FHWA representatives; where appropriate, other federal agencies, local government officials, utilities representatives, law
Anchor: i1013899 Section 6: HotMix Asphalt Pavement Mixtures Anchor: i1013905 General. Hotmix asphalt (HMA) is a generic term that includes many different types of mixtures of aggregate and asphalt cement (binder) produced at elevated temperatures (generally between 300350ºF) in an asphalt plant.
Hot mix asphalt may be referred to by several names. In different sections of the state it may also be referred to as bituminous concrete,hot plant mix,asphalt concrete, blacktop or Superpave. Hot mix asphalt is composed of aggregate bound together into a solid mass by asphalt …
Since 1974, asphalt producers and paving contractors have come to rely on ADM’s highquality portable and stationary plants and components. Our familyowned business provides a full range of asphalt plants that meet the unique requirements of each customer. Whether you’re a
“Batch plants, in their time, were the state of the art, very functional, and met the needs of most asphalt producers.” Batch plants, used at the turn of the century, were simple in design. A oneton batch plant (60 tons per hour [tph]) was the typical size. The quality of the mix generated by these plants met the specifications of the day.
Road Standards and Paving Standards ASTM's road and paving standards provide the specifications and test methods pertinent to the material, physical, mechanical, performance, and application requirements of road surfaces and pavements.
9 Design the asphalt plant mix with coarse and fine aggregate that meet Section 1005, 10 except as noted herein. Size, uniformly grade and combine the aggregate fractions in ... 25 Use coarse aggregate consisting of crushed stone, crushed gravel, a mixture of ... 5 A. Requirements apply to the design aggregate blend.
Astec leads the way with attractive, stationary asphalt plants that offer clean, troublefree operation. Stationary Batch Plants. The batch plant is ideal for metropolitan areas requiring a large number of different mixes. Instead of a continuous mixer, these facilities use a batch tower. Bins in the top section of the tower hold dried ...
ALDOT32483 . REQUIREMENTS FOR PLANTS PRODUCING ASPHALT PAVEMENT ... Scope . This procedure outlines the requirements for plants producing pavement asphalt mixtures for Department projects. All plants shall meet or exceed the following requirements, in addition to the requirements of AASHTO M 156. ... hours for Stone Matrix Asphalt ...
PERFORMANCE OF STONE MATRIX ASPHALT PAVING MIXTURES (SMA) MIXTURES IN THE UNITED STATES By Brown Rajib B. Mallick John E. Haddock John Bukowski January 1997. PERFORMANCE OF STONE MATRIX ASPHALT (SMA) MIXTURES IN THE UNITED STATES By Brown Director National Center for Asphalt Technology ... recommended Los Angeles abrasion requirement ...
SECTION 401 ¾ ASPHALT PLANT REQUIREMENTS DESCRIPTION. Provide and maintain a plant and all equipment necessary to produce and test asphalt mixtures. EQUIPMENT. 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 annually ...
and reclaimed asphalt pavement (RAP) reclaimed asphalt pavement. The materials used in the manufacture of APM shall meet the following requirements. A. Aggregates. Aggregates shall be of uniform quality, clean, hard, durable particles of crushed stone, crushed gravel, natural gravel or crushed slag free from clay balls, vegetable matter, or other
The asphalt plants or asphalt mixing plant is one plant that is used for mixing the dry warm aggregate, padding and Asphalt for homogeneous mixture at the required temperature. And it is widely used to the construction of highway, city road and parking lot.
After the AC is pumped and blended with aggregates (stone, sand, and fines) it is manufactured into Asphalt Paving Material (APM). The onsite storage silos containing APM have been explicitly exempted from SPCC requirements. All HotOil Mix (HMA) tanks and containers are exempt.
Asphaltic Concrete Plant Technician at the plant or jobsite who is capable of designing asphaltic concrete mixes, conducting any test or analysis necessary to put the plant into operation and producing a mixture meeting specifications. Daily plant operations shall not begin unless the Certified Asphaltic Concrete Plant Technician is at the plant.