[Google Scholar]) specifies a maximum free lime content of 7 and 4% in steel slag aggregates when used in unbound applications and hot mix bituminous pavements, respectively. Maximum free lime content in steel slag aggregates for use in cement bound layers is not specified.
Use of steel slag aggregate in asphalt concrete mixes. Canadian Journal of Civil Engineering, 34 (8), 902–911.10.1139/l07-025 [Google Scholar ] ASTM International.
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 five-year performance of a pavement constructed with 30% steel slag.
The use of steel slag as an aggregate is considered a standard practice in many jurisdictions, with applications that include its use in granular base, embankments, engineered fill, highway shoulders, and hot mix asphalt pavement.
Steel slag use in paving mixes should be limited to replacement of either the fine or coarse aggregate fraction, but not both, because hot mix asphalt containing 100 percent steel slag is susceptible to high void space and bulking problems due to the angular shape of steel slag aggregate.
The ASP#9 Steel Furnace Slag should be blended into the hot mix asphalt mixture along with other coarse and fine aggregates, asphalt cement and any other special additives in the proportions detailed in the mix design.
gaining adoption, particularly for hot-mix asphalt (HMA). HMA materials can be milled off the road surface and recycled. Reclaimed asphalt pavement (RAP) consists of ... als, especially those including recycled steel slag aggregates that could be used as pavement base mate - rials in Illinois (1). Additional objectives were to
used in concrete mixes, asphalt concrete (AC) mixes, and soil stabilization. Steel slag can be processed into coarse or fine aggregate material for use in dense-graded and open-graded hot-mix
In this study, steel slag was used as an aggregate replacement in conventional dense graded asphalt mixes (ACW14 and ACB28). Steel slag was selected due to its characteristics, which are almost similar to conventional aggregates, and the fact that it is easily obtainable as a by-product of the steel industry.
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 hot-mix asphalt (HMA) mixtures.
little use of such mixes in Canada, the use of steel slag in asphalt mixes has come of age in Southern Ontario with several suppliers of steel slag aggregate (Red-D-Mix, Steetley, Levy, IMS 2 ) and applicable Ontario Ministry of Transportation and
This research was intended to study the effectiveness of using steel slag aggregate (SSA) in improving the engineering properties of locally produced asphalt concrete (AC) mixes. The research started by evaluating the toxicity and chemical and physical properties of the steel slag.
Steel slag aggregate (SSA) is a byproduct of the production of steel in an electric arc furnace. The high iron oxide content of the aggregate results in an aggregate that is very hard and very dense (SSA is 20-30% heavier than naturally occurring aggregates such as basalt and granite).
Illinois has used steel slag only in HMA surface mixes for years and never has allowed steel slag or RAP con- taining steel slag in any other layer of the pavement
use in hot-mix asphalt if the volume expansion of the slag is controlled. Performance-based testing of steel slag aggregate, particularly volume stability, is recommended as a measure of the aggregate …
Use of steel slag aggregate in asphalt concrete mixes. ... steel slag aggregate, asphalt concrete, ... on the basic properties of hot mix asphalt made with different grades of bitumen (60/70 and ...
The foundry sand (Fig. 2) has been used as fine aggregates in hot mix asphalts, to replace the thin part of the conventional aggregates. Results of previous works showed that replacing the natural aggregate by foundry sand in the proportion of 15% resulted in asphalt mixtures with a satisfactory mechanical performance [ 20 ].
Steel slag is a by-product of the steel industry and can be used potentially as aggregate in asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as substitute for natural ...
Steel slag is currently used as aggregate in hot mix asphalt surface applications, but there is a need for some additional work to determine the feasibility of utilizing this industrial by-product more wisely as a replacement for both fine and coarse aggregates in
Evaluation of Steel Slag Fine Aggregate in Hot-Mix Asphalt Mixtures PRITHVI S. KANDHAL AND GARY L. HOFFMAN ity of the steel slag. Steel slag that was used as structure backﬁll behind bridge abutments and wing walls on a DOT project expanded
MATERIAL SPECIFICATION FOR AGGREGATES - HOT MIX ASPHALT . TABLE OF CONTENTS . 1003.01 SCOPE . ... LS-312 Fractionation of Unextracted Reclaimed Asphalt Pavement (RAP) and Hot Mix Aggregates for ... Steel slag, air-cooled blast furnace slag, nickel slag and copper slag in HMA. RAP shall not be used containing steel slag aggregate, RST containing ...
Asphalt concrete pavement, or hot mix asphalt (HMA) pavement as it is more commonly called, refers to the bound layers of a flexible pavement structure. For most applications, asphalt concrete is placed as HMA, which is a mixture of coarse and fine aggregate, and asphalt binder.
Use steel slag with an Uncompacted Void Content of the Fine Aggregate "U" Value, determined by test method KT-50, of more than 42.00 and the Coarse Aggregate Angularity greater than the …
We utilize slag, a product of steelmaking, in versatile construction material for environmentally beneficial use. Applications include road construction, asphalt, ready-mix concrete, cement, railways ballast, mining, filtration and agriculture.
Steel slag is a by-product of the steel industry and can be used potentially as aggregate in asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as substitute for natural aggregates in the production of hot mix asphalt (HMA) for road construction.
Absorption requirements are of concern only regarding aggregates used in hot mix asphalt and portland cement concrete. The intent is to avoid using highly porous, absorptive aggregates because extra water and cement or ... Steel furnace slag, both fine and coarse 3.2 Gravel Coarse Aggregates There is a specific requirement for gravel coarse ...
Research on the use of steel slag aggregate in PCC has been carried out in Spain, Germany, Canada, Italy, India, and Saudi Arabia. Despite some limited field applications, virtually all research has been done in the laboratory. ... steel slag for use as a base material or as hot-mix asphalt aggregate is its high interparticle friction. However ...
ORIGIN OF AGGREGATES The three main sources of mineral aggregates in Indiana, gravel and natural sand, crushed stone, and slag, all have different origins. ... southern Illinois, a sedimentary rock type, is permitted for use in hot mix asphalt surface courses. ... furnace slag, steel slag, or wet bottom boiler slag.
1. Introduction. In China, more than 90% expressways are constructed with hot-mix asphalt mixtures (HMA) (Chen et al., 2016, MOT, 2015).The increase of road construction imposes considerable pressure on raw building materials, especially on natural aggregates.
Pelletized blast furnace slag has been used as lightweight aggregate and for cement It is extensively used in granular base, hot mix asphalt, Portland cement "Interim Policy: Use of Blast Furnace and Steel Slag," State of Ohio ACBFS is readily processed …
slag is used as a portion of the aggregate. If the unit cost of steel slag modified mixes is the same as ... the use of steel slag in hot mix asphalt concrete (HMAC). Steel slag, a by-product of the steel-making process, is readily available in the Portland Metropolitan area. If unused, the slag
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.