One of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries This paper
·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
·It is observed from the test results that the iron ore tailings aggregate concrete exhibited a good mechanical strength compared to the control mix The compressive strength has increased with the
·It is also seen from the results that the compressive strength characteristics of iron ore slag dust aggregate concrete attain the required criteria set by various international standards and
·Table 1 depicts the mechanical and physical properties of cement Two sizes of dolomite were used; size 1 has a max size of 10 mm and 20 mm for size 2 The mechanical and physical properties of dolomite are given in Table 2 Natural sand was used as the fine aggregate with the physical properties shown in Table 2 Silica fume SF was
·The need for low cost raw materials is driven by the fact that iron ore tailings a prevalent kind of hazardous solid waste have created major environmental issues
·In addition a better understanding of the properties of new green concrete is needed to enable it to be designed for desirable performance and sustainability Therefore 100% IOTs and iron ore waste rock were used to replace natural sand aggregate and IOTs fly ash slag powders were used to prepare ternary system SCMs
·In the 70s river rocks were mainly used as aggregate in Japan Since then the ratio of aggregate taken from land and mountain has increased gradually in order to preserve the natural environments of rivers Recently the ratio of crushed stones is increasing [3] The ratio of limestone as aggregate in the concrete in 1974 was only %
·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
·the concrete tests used to measure aggregate properties and methods used to obtain test samples Normalweight as well as lightweight aggregates are discussed The measurement system used in this Bulletin is the Inter national System of Units or SI Units Accordingly readers
·of iron ore tailing concrete and bottom ash concrete III METHODOLOGY A Literature Review B Procurement of Materials Ordinary Portland Cement Coarse Aggregate Poabs Msand Iron Ore Tailing from Lakya Dam site Karnataka Ash from Hindustan News print Ltd Kottayam Super Plasticizer
·1 ACI Concrete Terminology A/F ratio — the molar or mass ratio of aluminum oxide Al 2O 3 to iron oxide Fe 2O 3 as in portland cement Abrams law — a rule stating that with given concrete materials and conditions of test the ratio of the amount of water to the amount of the cement in the mixture
·Iron ore tailings sample as shown in Fig 1 meet the particle size distribution requirements for fine aggregate by falling within the IS limits; it was used to produce cubes to ensure strength attainment The specific gravity of the sample procured from M/s Gogga Minerals and Chemicals Hospet was and water absorption was
·Ratios of 0% 15% 30% 50% and 100% are on the grade of concrete the compressive strength is improved when steel slag is used for low sand replacement ratios up to 30% When
·Iron ore tailings IOT are the by products of iron ore beneficiation and these tailings are disposed of in several tons annually in quarries landfills and tailings dams causing environmental issues Various researchers have attempted to study the properties of IOT and the use of them in concrete as a building material
·Keywords concrete making material; fine aggregate; iron ore tailings; microscopy of material; sustainability; waste material DOI /51720305 Date 3/1/2020 Abstract Iron ore tailings IOTs are common industrial solid waste products which are generated in enormous quantities during the production process of iron ore
The results show that the slump of concrete containing iron tailings is equal to concrete with river sand when the content of iron tailings is 60% With the increase of the content of iron tailings compressive strength of concrete shows a trend of decrease at same age; meanwhile drying shrinkage decreases and is less than the concrete prepared river sand
·For example iron ore tailings was used by many researches to substitute fine aggregate in concrete [19][20] [21] [22] the findings of these investigations showed that concrete formulated with
DOI / Corpus ID 238661051; Comparison on micromechanical properties of interfacial transition zone in concrete with iron ore tailings or crushed gravel as aggregate
·DOI / Corpus ID 136555827; Utilization of iron ore tailings as fine aggregate in ultra high performance concrete article{Zhao2014UtilizationOI title={Utilization of iron ore tailings as fine aggregate in ultra high performance concrete} author={Sujing Zhao and Junjiang Fan and Wei Sun}
·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 As the interfacial transition zone ITZ between IOTs and cement paste is significant to concrete performance but rarely studied the present work is
·It is entirely feasible to use garbage and byproducts as concrete aggregates Iron ore tailings were another concrete application The use of iron ore tailings in the manufacture of ceramic tiles was investigated and it was discovered that tiles containing up to 40% iron ore tailings had higher hardness and strength As the world