A specific aggregate or combination of aggregate is selected for its durability strength workability and ability to receive finishes And to go even further changes in the size weight moisture content and gradation of each aggregate can also alter the characteristics of the concrete What is grading and why is it important to concrete
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— Simultaneously adding iron tailings can compensate for the loss of strength caused by recycled aggregates and enhance performance The mechanical properties of recycled aggregate concrete with iron tailings and prepared concrete specimens with iron tailings sand content of 0% 25% 50% 75% and 100% were studied
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— The structures with the addition of 10% and 20% of iron ore tailings had about the same results as the structures of soil cement with no addition of iron ore tailings Moreover the use of iron
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In this research used iron filling as partial replacement fine aggregate at percent 5 10 and 15% by weight of fine aggregate and maintaining the ratio of water to cement at 40% and study observe Expand
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— The present study investigates the effects of utilizing dumped waste as a practical resource for making concrete In this regard waste marble powder used a filler material replacing a smaller constant portion of cement dumped iron ore tailings IOT were used as a partial replacement for fine aggregate in different proportions Since waste
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— Utilization of mine waste rocks and tailings in concrete as aggregates will help in sustainable and greener development The literature shows the potential use of iron ore tailings as a
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— Semantic Scholar extracted view of "Comparison on micromechanical properties of interfacial transition zone in concrete with iron ore tailings or crushed gravel as aggregate" by Weipeng Feng et al Mechanical properties and enhancement mechanism of iron ore tailings as aggregate for manufacturing ultra high performance geopolymer
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The iron ore tailings aggregate concrete exhibited a good compressive strength with an increment of % over plain or normal concrete This improved strength of IOT concrete may be due to the high content of iron oxide present in the IOT which has the ability to accelerate cement hydration as reported by [42] [39] studied the utilization
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— Experimental Study and Microscopic Analysis on Frost Resistance of Iron Ore Tailings Recycled Aggregate Concrete May 2022 Advances in Materials Science and Engineering 2022 9 1 16
— Reusing of iron ore tailings IOT particularly as recycled aggregate to prepare concrete plays an important role in reducing dependence on natural resources and solving the problem of waste accumulation In this paper the effects of IOT as aggregate on the flowability compressive strength of ultra high performance geopolymer concrete
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— Freeze thaw harm is the major factor that reduces the durability of hydraulic concrete buildings at high altitudes and in cold regions To solve the durability problem of hydraulic buildings in alpine regions the study prepared sixteen groups of concrete specimens with different replacement ratios of iron ore tailings and recycled
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— In the present paper the mechanical property of the interfacial transition zone between cement matrix and iron ore tailing as coarse aggregate was studied statistically by grid nanoindentation technique with the MLE deconvolution method optimized via the EM algorithm The following conclusion can be drawn 1
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— The Iron Ore Tailings IOT s a waste product with particle size range from 850μm 75μm obtained from Iron Ore Processing was utilized as fine aggregate to produce concrete
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the use of IOT increased the compressive strength of concrete either as sand or cement replacement but better performance was recorded for cement replacement Iron ore tailings were also used in other concrete applications For example Das et al [13] studied the use of IOT to develop cera
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the use of IOT increased the compressive strength of concrete either as sand or cement replacement but better performance was recorded for cement replacement Iron ore tailings were also used in other concrete applications For example Das et al [13] studied the use of IOT to develop cera
— Reusing of iron ore tailings IOT particularly as recycled aggregate to prepare concrete plays an important role in reducing dependence on natural resources and solving the problem of waste accumulation In this paper the effects of IOT as aggregate on the flowability compressive strength of ultra high performance geopolymer concrete
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— Using recycling iron ore tailings IOTs from industrial solid waste as concrete aggregates agrees with the sustainable development of the construction industry and carbon neutrality commitment
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— by complete replacing fine aggregate by Iron ore tailings and GGBS as partial substitute to cement at 10% 20% 30% and 40% The cubes were casted and their compressive strengths Table6 Compressive strength of concrete Iron ore tailings as sand 10% GGBS Sl no Age days Maximum Compressive strength Average KN MPa
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— Steel slag could be valuable for promoting a sustainable relationship between the concrete and steel industries C 2 S C 3 S C 4 AF and C 3 A in steel slags are typical mineral phases of Portland cement indicating the potential of steel slags to function as hydraulic materials Therefore one recycling option is to grind steel slags into a fine
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— Millions of tons of iron ore tailings IOT ; a by product of iron ore processing are disposed of every year in landfills quarries rivers oceans among others thereby posing environmental problems
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