A research carried out in the usa by hunt and boyle 2000 described that in 1994, steel slag test and control sections were constructed in oregon to evaluate the use of steel slag in hot mix asphalt concrete hmac. Steel slag is a byproduct of molten iron processing, and different types of steel slag are formed depending on a specific type or grade of steel and the furnace used during steel production. The incorporation of steel slag in flexible pavement construction improves its efficiency, serviceability and durability. Commonly murrum soil has been used for construction of all. The resources of this material are limited, and availability of this material at the project site is less thus it is required to bring this material from their source like stone query to the project site, this lead to increase the cost of the. Steel slag aggregates are already being used as aggregates in asphalt paving road mixes due to their mechanical strength, stiffness, porosity, wear resistance and water absorption capacity 8, 11. Use of steel slag aggregate in pavements report november. Use of steel slags in automobile road construction. Evaluation of steel slag and crushed limestone mixtures as. Evaluation of the use of steel slag in concrete trid. To achieve this goal in concrete pavement, various substitutes were found to be replaced with natural aggregates of concrete. Use of heavyduty equipment with insulated beds, multiple axles carrying heavier loads, and automatic. Steel slag, a byproduct of the steel industry, has been used in road construction in south yorkshire and its environs for the past 60 years. Use of steel slag as a new material for roads iopscience.
Use of steel slag aggregate in pavements report november 2015. Since 1993, steel slag aggregates have been used commercially in the region for road surfacing 3. If you continue browsing the site, you agree to the use of cookies on this website. The use of steel slag aggregate in concrete by replacing natural aggregate is a most promising concept 4. Use of steel slag in construction of flexible pavements the vast measure of industrial squanders as expanded step by step and transfer turns into an intense issue. The term flexible pavement, used throughout this manual, includes pavement construction composed of bituminous material and aggregate mixtures or various combinations of layers of these mixtures on layers of aggregate base or subbase. Standard specification for urban infrastructure works 47 edition 1, revision 02 oct 2010. The semirigid pavement has a higher composite modulus than a true flexible pavement and begins to resemble the rigid structure in terms of how the traffic loads are distributed over the subgrade.
Use of plastic waste in the construction of flexible pavement is gaining importance because of the several reasons. Steel slag aggregate of 030mm granulation was used, to which sand of. Should it be necessary to use the pavements at an earlier age, consideration should be given to the use of a design flexural strength at the earlier age or to the use of high early strength cement, whichever is more mix proportion or pavement thickness may have to economical. The initial applications of steel slag asphalt took place in late 1960s when the united states and canada. The evaluate effect of addition of steel slag with various percentages to. Pdf steel slag as a road construction material researchgate. Introduction to rigid pavement design ced engineering. Method and process is to be developed to utilize processed steel slag aggregate in bituminous granular layers of flexible pavement were provide to road and steel industries.
It is necessary to utilize the steel slag waste affectively with technical development in each field. This investigation aims to use cs as construction material in bituminous road construction. This study aims at reducing the cost of construction of flexible pavements. In this study the use of iron slag which is a blast furnace slag is a by pro duct of iron manufacturing industry is utilized in the construction o f different layers of pavement. Because of the high disposal cost as a waste material and the overall positive features of steel slag, it has been declared a useful construction material, not. Paul guyer is a registered civil engineer, mechanical engineer, fire protection engineer, and architect with over 35 years experience in the design of buildings and related. Use of steel slag and aggregate for pavement subbase. In his project, strength characteristics of clayey soil with steel slag has been studied. As the united states and the rest of the world continue to grow, so. Transportation the evolution of hauling equipment has been dramatic in recent years. It would appear that the optimum uses for iron blast furnace slag are in cements and base stabilization processes that take advantage of the energy invested in the suitably vitrified slag granulated or pelletized, rather than bulk aggregate applications.
Successively, it is recycled as an aggregate for the construction of roads, soil stabilization, and base and for the surfacing of flexible pavement. Sdbc are the wearing courses of flexible pavement construction. The research covers the construction and fiveyear performance of a pavement constructed with 30% steel slag. Aug 08, 2016 construction of flexible pavement in short. Director, csircentral road research institute, delhi in simple terms, a flexible pavement can be defined as a pavement layer comprising of a mixture of aggregates and bitumen, heated and mixed properly and then laid and compacted on a bed of granular layer.
Introduction to flexible pavement design ced engineering. The fundamental difference between a flexible, semirigid, and rigid pavement is the load distribution over the subgrade. Feasibility of expanding the use of steel slag as a concrete. The stateoftheart example of steel slag usage as an aggregate in concrete pavement is a situation in belgium where slag from stainless steel production is used as an aggregate in rollercompacted concrete pavement construction of a rural road with very light traffic 18. In the construction project such as highway project for the construction of pavement lot of raw material like soil, aggregate, sand, etc. Sustainability has become an important aspect of developed countries throughout the world. Journal of environmental engineering and landscape management, 2007, vol.
Despite this, a large amount of steel slag generated from steel industries is disposed of in stockpiles to date. Pdf steel slag as a road construction material moetaz. Use of steel slag in construction of flexible pavements. The resources of this material are limited, and availability of. Nearly onethird or onehalf of the total cost of construction, so careful consideration should be taken in design of pavement.
Steel slag ingredient for concrete pavement open access. Reuse of steel slag as an aggregate to asphaltic road pavement. In india, no mix design procedure is available till date for open graded mixes like bm, which has a tendency to. The most dominant recycling materials that are in practice at present include plastic wastes, scrap tires, foundry sand, bottom and fly ashes, oil sand, marble dust, recycled concrete. Steel slag material description user guidelines for waste. Use of waste plastic in construction of flexible pavement. The high iron oxide content of the aggregate results in an aggregate that is very hard and very dense ssa is 2030% heavier than naturally occurring aggregates such as basalt and granite.
Technology to reduce the free lime content in steel slag aggregate to prevent volumetric change in aggregate was defined. Jun 03, 2017 use of steel slag in construction of flexible pavements the vast measure of industrial squanders as expanded step by step and transfer turns into an intense issue. In 2006, steel slag generation was estimated to be in 1015 million metric ton mt. Ca4prs construction alternatives for pavement rehabilitation strategies, portland cement concrete pcc pavement panel. Bitumen, is a black sticky substance obtained from natural asphalt. Rapid pavement construction tools, materials and methods. Steel slag utilization in asphalt mixes mf 1861 page 5 expansion tests there is a large amount of steel slag used for applications such as bases, and many old steel slag heaps or fills are being built on, or used for construction purposes.
Applications include use of slag for erosion control, mineral filter applications, bank reinforcement, and construction of dikes, reefs and sea walls. The increasing demand for road construction led researchers to search for an economical and ecological pavement design. Characteristics and uses of steel slag in building construction. Steel slag is a byproduct obtained from steel industry. Use of copper slag as construction material in bituminous. Because of the high disposal cost as a waste material and the overall positive features of steel slag, it has been declared a useful construction material, not an industrial waste by most of the developed countries. As the united states and the rest of the world continue to grow. Local highway engineers have anecdotal evidence of. Steel slag has been utilized worldwide in waterway construction. It is critical that these steel slags be checked for potential expansion, since. Prior to its use as a construction aggregate material, steel slag must be crushed and screened to meet the. Many researchers have investigated the use of steel slag as an aggregate in the design of asphalt concrete for the road construction. Characteristics and uses of steel slag in building construction, 2016.
Flexible pavements csir central road research institute. The semirigid pavement has a higher composite modulus than a true flexible pavement and begins to resemble the rigid structure in terms of how. Use of steel slag in bituminous road construction irjet. This study also shows that the use of steel slag in hma reduces the optimum bitumen content, thus making the flexible pavement construction more economical and ecofriendly. Use of steel slag in construction of flexible pavement. M40 cement concrete mix with a minimum flexural strength of 45 kgcm2 is recommended by the irc for use in the ccpavements of highways with heavy to very heavy traffic loads. Steel slag aggregate ssa is a byproduct of the production of steel in an electric arc furnace.
Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is generated as a residue during the production of steel. Khabiri2007,preventive maintenance of flexible pavement and mechanical properties of steel slag asphalt. It is important to use the steel slag squander affectively with specialized advancement in each field. The state of theart example of steel slag usage as an aggregate in concrete pavement is a situation in belgium where slag from stainless steel production is used as an aggregate in rollercompacted concrete pavement construction of a rural road with very light traffic 18.
Steel slag, concrete, road pavement, compressive strength, ductility, abrasion introduction slags are the industrial byproducts of the steel production process. This article aims to present an ove rview of the applications of steel slag in the paveme nt industry, covering the regulations in different parts of the world that. Flexible pavement construction and rehabilitation 3 measurement, more durable and efficient mixer components and liners, and more sophisticated timing devices. Pavement design is the major component in the road construction. Steel slag aggregate for hotmix asphalt, chip seals and stone mastic. Journal of environmental engineering and landscape.
Such as used industrial material like steel slag in construction of road pavement. Pdf use of steel waste for the application in urban paving. Slag ballast for railroad applications is singled out. The feasibility of utilizing of steel slag and local soil in construction of flexible pavement with variation of percentage in soil. Electric arc furnace steel slag produced from the ferrous smelting process in the. Depending on the production method, slag accounts for 7. 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. Use of steel slag in rigid pavement pandey international. Steel slag as a road construction material hainin jurnal. Slag ballast for railroad applications is singled out for first preference over any other type of ballast. Introduction the iron and steel slag that is generated as a.