The use of steel slag in asphaltic mixture
TL;DR: In this article, steel slag from a Turkish company has been used in asphaltic mixtures as an aggregate in this research, and it was used in three levels of asphalt pavement as a bitumen base, binder and wearing layer.
Abstract: Steel slag is a residue produced by refining iron to steel in open-hearth, basic oxygen and electric arc furnaces. It is liquid cooled from its molten state and has high density. The possibilities for the recycling of steel slag differ from country to country, depending on the chemical composition of the slags, steel making process, the national and local environmental regulations. Was first, normal to recycle 30% of the steel slag production internally in the steel works to the sinter and BOF plants. Nowadays, recycling slag by means of the sinter plant has declined because of the higher quality demands on steel production. Steel slags have several applications in the foreign countries. These are as a sub-base material for road construction, civil and marine engineering and agricultural use. Steel slag from a Turkish company has been used in asphaltic mixtures as an aggregate in this research. Steel slag was used in three levels of asphalt pavement as a bitumen base, binder and wearing layer. Physical properties of steel slag satisfied the requirements for using in asphaltic mixture.
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TL;DR: It was observed thatSteel slag used as a coarse aggregate improved the mechanical properties of asphalt mixtures and volume resistivity values demonstrated that the electrical conductivity of steel slag mixtures were better than that of limestone mixtures.
405 citations
TL;DR: In this paper, the effectiveness of steel slag as a substitute for virgin aggregates on mechanical properties of cold mix recycling asphalt pavement was evaluated, and the results showed that the use of slag can enhance Marshall stability, resilient modulus, tensile strength, resistance to moisture damage and resistance to permanent deformation of CIR mixes.
104 citations
Cites background from "The use of steel slag in asphaltic ..."
...conducted a research to investigate the feasibility of utilization of steel slag in three levels of asphalt pavement as a bitumen base, binder and wearing course [11]....
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TL;DR: In this article, the feasibility of reusing steel slag as a mineral filler in an asphalt mixture was discussed and the effect of SSF on the rheological properties of asphalt mortar was investigated via dynamic shear rheometer (DSR) and bending beam rheometers (BBR) tests.
64 citations
TL;DR: In this article, the long-term performance of warm mix asphalt containing electric arc furnace steel slag was investigated, and the ratio between the results of longterm and short-term aging of these tests was presented as an aging index.
53 citations
TL;DR: In this article, modified pull-off tests were implemented to investigate the bonding characteristics of bitumen and basic oxygen furnace slag by Universal Test Machine, and the results are in accord with fracture energies.
25 citations
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TL;DR: In this paper, the results showed that mixes with slag in the coarse portion and limestone in the sand and filler portions modified with polymer had high resistance to rutting and fatigue failure.
Abstract: Construction in Saudi Arabia, emanating from rapid development, has caused massive depletion of scarce construction resources. Crushed limestone and sandstone aggregates used in bituminous mixes lack the desirable qualities for proper mix performance. On the other hand, large amounts of steel slag aggregates with good qualities are being produced and put to waste in Jubail, Saudi Arabia. Laboratory evaluation of mixes from steel slag aggregates was done by reconstituting mixes based on Ministry of Communications, Saudi Arabia, and Strategic Highway Research Program specifications. Steel slag and limestone aggregates were proportioned in the sand and filler portions. Treatment was done using portland cement, lime, polymer, and amine additives. The mix properties tested include resilient modulus, split tensile strength, stability, fatigue, and permanent deformation. Analysis of the results showed that mixes with slag in the coarse portion and limestone in the sand and filler portions modified with polymer had high resistance to rutting and fatigue failure.
68 citations
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01 Jan 1958
15 citations
"The use of steel slag in asphaltic ..." refers background in this paper
...The aggregate is usually crushed stone, gravel, steel slag and sand, used either in combination with one another or alone [2]....
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TL;DR: In this article, the authors compared steel slag from a Turkish company and other steel slags in the world, and discussed possible application areas of utilization. But the main objective of this research was to characterize steel slagg from a Turkey company and compare other steel sags in different countries.
Abstract: Steel slag is a waste material produced during the process of steel making. For many years, a large amount of steel slag has been deposited in slag storing yards, occupied farmland, silted rivers and polluted the environment. Many steel plants in the world have already taken up innovative waste recycling technologies with the ultimate objective of 100% recycling. The comprehensive utilization of steel slag is important for environmental protection and resource reuse in Turkey and abroad. It is clear that steel slag must meet appropriate performance specifications before being adopted for a particular application. The aim of the present research was to characterize steel slag from a Turkish company and compare to the steel slags from various countries. Application possibilities have been sought by comparing properties to the other steel slags. Introduction Resource recovery and reuse of waste materials have become very important within the past decade because of the increased number of environmental regulations that force minimizing waste disposal. Steel slag is a by-product of the steel industry. It is formed as the lime flux reacts with molten iron ore, scrap metal or other ingredients into the steel furnace at melting temperatures. Until current decade the main objective of the steel makers was the production of steel. Steel slag was treated as a by-product for disposal until the quantity of slag in the slag storing yards has reached to enormous amounts. Rising costs and decreasing capacity at landfills have forced the steel industry to change this view. Nowadays the effective utilization of waste steel slag became an important part of the steel manufacturing process [1]. The utilization of steel slag is important for environmental protection and resource reuse in Turkey and abroad. About 10% of steel slag is recycled through sinter plants in Turkey while it is sold and utilized in agriculture, material for roads, railways, aggregate for mixing with asphalt, civil engineering and raw material for the production of cement in the world [2]. Compositions of steel slag are highly variable even for the same plant and furnace. It has excellent skid resistance, high bulk density and a potential expansive nature because of the compounds such as free lime and magnesia. The main objective of this research is to characterize steel slag from a Turkish company and compare other steel slags in the world, finally discuss possible application areas of utilization.
5 citations