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Mar 08, 2016· The slag processor may also be required to satisfy moisture content criteria (, limit the amount of moisture in the steel slag aggregate prior to shipment to a hot mix asphalt plant) and to adopt material handling (processing and stockpiling) practices similar to those used in the conventional aggregates industry to avoid potential segregation.
Jun 15, 2009· Steel slag used in paving mixes should be limited to replace either the fine or coarse aggregate fraction, but not both, since hot mix asphalt containing steel slag is susceptible to high void space and bulking problems due to the angular shape of steel slag aggregate.
Hot mix asphalt (HMA) is a merger of 95% stone, sand, or gravel bound together by asphalt cement. Steel slag is a byproduct of the steel making process. The use of Steel slag in HMA can have a large economical, environmental, and engineering impact in pavement construction.
hot mix asphalt and portland cement concrete. The intent is to avoid using highly porous, absorptive aggregates because extra water and cement or asphalt is needed to make a good mix. However, some aggregates, such as blast furnace slag, may be used despite their high absorptive capacity
Since a considerable amount of steel slag is produced in the southwestern part of Pennsylvania around Pittsburgh, where natural fine aggregate sources are limited, an evaluation was undertaken to determine the feasibility of using "cured" steel slag fine aggregate in hotmix asphalt .
Nov 13, 2012· The past decade has seen the increased and successful use of reclaimed asphalt pavement (RAP), warm mix asphalt (WMA), reclaimed asphalt shingles (RAS), and ferrous; iron and steel slag (slag).
Asphalt. Hot Mix Asphalt. Portland Cement Lehigh Portland Cement Lehigh Masonry Cement Lehigh Portland Lime Cement Portland Cement Clinker. Cement Kiln Dust. Blended Other Cement. Slag Cement Type IP. Type IS. Ready Mix Concrete. Ready Mix .
Since a considerable amount of steel slag is produced in the southwestern part of Pennsylvania around Pittsburgh, where natural fine aggregate sources are limited, an evaluation was undertaken to determine the feasibility of using "cured" steel slag fine aggregate in hotmix asphalt (HMA) mixtures.
mixtures during the 2018 construction season, including recycled tire rubber, blast furnace slag, steel slag, and cellulose fibers. The estimated total production of asphalt with WMA technologies during the 2018 construction season was million tons more than half of which
of steel slag in hot mix asphalt concrete (HMAC). his report covers the construction and fiveyear performance of a pavement constructed with 30% steel slag. Asphalt concrete can be produced and the pavement constructed readily in Oregon when crushed steel slag is used as a portion of the aggregate.
Iron production''s waste materials include significant quantities of blast furnace slag (BFS) which could potentially be used as a substitute for natural aggregates in hot mix asphalt (HMA) used in highway projects. Although many of properties of slag are interesting, its porosity and absorption rate would lead to greater consumption of asphalt.
Asi et al. studied the effect of the steel slag aggregate on performance characteristics of hot mix asphalt. They conducted indirect tensile strength test, resilient modulus, rutting resistance, fatigue life, and creep modulus tests and also it was reported that mixtures containing up to 75% steel slag .
2. The asphalt content is based on the total weight of the mix. When using slag aggregates in the mix, the asphalt content shall be increased accordingly, a minimum of 25 percent for an all slag mix. 3. .
Significant amounts of blast furnace slag (BFS) are generated daily as byproduct from iron and steel industries. This waste material usually has interesting physical properties and mineralogical and chemical composition, which can be useful as granular aggregate in the production of hot mix asphalt .
We process the steel slag, which is a byproduct from making steel, crushing and screening it to make aggregate chips and sand for asphalt. Much of the slag begins life as lime which is sold to SSAB by Linwood Mining for the purification of the steel. Approximately 80% of our product is produced to go into SMA (Stone Mastic Asphalt) hot mix asphalt.
One of the main applications of the recycled steel slag is aggregate for asphalt pavement. ... B. Sengoz, Evaluation of steel slag coarse aggregate in hot mix asphalt . concrete, J. Hazard. Mater ...
steel slag in hot mix asphalt concrete In September 1994, steel slag test and control sections were constructed in Oregon to evaluate the use of steel slag in hot mix asphalt concrete (HMAC). This report covers the construction and fiveyear performance of a pavement constructed with 30% steel slag.
The 2016 trial project included a onemile trial section of hotmix asphalt pavement constructed using steel slag aggregate as a replacement for 20 percent of the coarse aggregate in the HMA. The trial section was part of a project that improved five miles of SR 203 by grinding out the existing pavement and replacing it with new pavement.
Steel slag can be processed into a coarse or fine aggregate material for use in dense and opengraded hot mix asphalt concrete pavements, (1,2,3) and in cold mix or surface treatment applications. (4) Proper processing of steel slag and special qualitycontrol procedures are extremely important in selecting steel slag for use in asphalt paving ...
For this project the entire two inch thick hot mix asphalt (HMA) surface was planed to a depth of 11/2 inches and replaced with two inches of Trinidad Lake Asphalt / steel slag modified HMA. The job mix formula, which called for asphalt cement of % ±% of the total mixture by
Hot mix asphalt (HMA) is a merger of 95% stone, sand, or gravel bound together by asphalt cement. Steel slag is a byproduct of the steel making process. The use of Steel slag in HMA can have a large economical, environmental, and engineering impact in pavement construction. Introduction of steel slag as aggregates reduces
Hotmix asphalt that contains nickel slag aggregate—Laboratory evaluation of use in highway construction. Journal of the Transportation Research Board, 2 (2208), 1–8. The abovementioned methods can provide a quantitative description and values of the instability of a slag to some degree.
Steel slag aggregates use in hot mix asphalt concrete. Final report prepared for the Steelmaking Slag Technical Committee, Toronto, Ont. John Emery Geotechnical Engineering Limited (JEGEL).
Steel Slag Asphalt Concrete INTRODUCTION Steel slag can be processed into a coarse or fine aggregate material for use in dense and opengraded hot mix asphalt concrete pavements, (1,2,3) and in cold mix or surface treatment applications. (4) Proper processing of steel slag and special qualitycontrol procedures are extremely important in selecting steel slag for use in asphalt paving mixes.
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