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fine aggregate in concrete mining

Alternative fine aggregates in production of sustainable concrete

It is found that crushed brick mortar (CB) fine aggregate have more dust and fine particles lesser than 75 μm than crushed concrete aggregates (Martinez et al., 2013; Aggarwal and Siddique, 2014).Westerholm M, Lagerblad B, Silfwerbrand J, Forssberg E (2008) Influence of fine aggregate characteristics on the rheological properties of mortars. Geomaterials as construction aggregates: a state-of-the-art

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Strength assessment of concrete with copper slag as fine

When fine aggregate is substituted for copper slag in a percentage range of 10% to 100%, the compressive strength of the cement composite gradually increases Recycled fine aggregate obtained from crushed waste concrete. Recycled concrete with variable content of recycled fine aggregate. Mechanical and durable Use of recycled fine aggregate in concretes with durable

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Recycling Mine Tailings for a Sustainable Future Built

Mine tailing as a replacement of fine aggregate in mortar and concrete has been studied widely, mainly due to its particle size and specific gravity. Borges et al. [ 22 In general, concrete includes coarse aggregate and fine aggregate, but tailings are merely used as partial or full replacements of fine aggregate, since their particles are fine with a Utilization of tailings in cement and concrete: A review De

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A sustainable solution to excessive river sand mining by

Excessive river-sand mining for use as fine aggregate in concrete is responsible for riverbed degradation, which causes a wide range of problems, including The compacting factor value for normal weight concrete varies from 0.8 to 0.92 [ 14 ]. With a rise in tailings content, the compacting factor declines. This may be Concrete Made with Iron Ore Tailings as a Fine Aggregate: A

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Alternative fine aggregates in production of sustainable concrete

This study investigates the effects of CDW as a fine aggregate replacement on the workability and mechanical performance of the mortar by using three types of The paper reviews the feasibility of a wide variety of industrial by-products such as bottom ash, waste foundry sand, copper slag, plastic waste, recycled rubber Feasibility assessment for partial replacement of fine aggregate

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Utilization of tailings in cement and concrete: A review De

The use of 10% tailings as fine aggregate in concrete had much the same water permeability compared to that of control K. Bailey, M. Bourham, Mechanical and radiation shielding properties of mortars with additive fine aggregate mine waste, Annals of Nuclear Energy 101 (2017) 600-606. 10.1016/j.anucene.2016.11.022 Search in GoogleThe increasing use of copper and its allied materials across many industries is ramping up copper mining activities in many countries, and proper management and disposal of huge volumes of copper mine tailings arising thereof is a huge challenge. Sungun mine is the biggest open-cast copper mine in the northwest of Iran. Use of copper mine tailing in concrete: strength

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Utilization of tailings in concrete products: A review

The MgO content of the tailings to be used as aggregate in concrete is required to be<3 % [56]. In addition, the Cl and SO 4 contents of the tailings have a significant effect on the concrete quality [44]. The tailings can be used as an inert filler to replace fine aggregates in concrete.Fine Aggregate Meaning. Fine aggregates are usually sand or crushed stone that are less than 9.55mm in diameter. Typically the most common size of aggregate used in construction is 20mm. A larger size, 40mm, is more common in mass concrete. Larger aggregate diameters reduce the quantity of cement and water needed.What Is Fine Aggregate Types of Fine Aggregates

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Use of recycled fine aggregate in concretes with durable

Section snippets Materials and mixtures. Blended Portland cement (type I (SM) ASTM or CEM II-M), river siliceous sand, and granitic crushed stone (nominal size 6–20 mm) were used to make the concretes.For recycled concretes, recycled fine aggregate (RFA) obtained from crushed waste concretes of different qualities, and made with Iron Ore Tailings as Partial Replacement for Fine Aggregate in Concrete Production Review August 2022 International Journal of Engineering and Management Research 12(4):64-71(PDF) Iron Ore Tailings as Partial Replacement for Fine Aggregate

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Comparative mechanical properties of conventional concrete

The materials consist of water, gravel, river sand, cement, and mining tailings. The replacement of the fine aggregate with the mining aggregates corresponds to 5%, 10%, 20%, 40%, and 100% of the total aggregate volume. It is required to consider the water-cement ratio, aggregate-cement ratio, grain size distribution, mix consistency, Furthermore, to obtain high strength concrete, waste marble in proportion of 40%, 50% and 60% by weight cement as fine aggregate were used as a filler material to fill the voids between concreteRETRACTED ARTICLE: Effects of waste glass and waste

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Cleaner production of concrete by using industrial by-products as fine

Excessive river sand mining for use as fine aggregate in concrete is accountable for the deterioration of the river bed. Furthermore, floods due to changes in the directions of river flow and effect on biological diversity are major threats caused by river sand mining. From 2010 to 2020, river sand usage in the Indian construction sectorIn this study, locally produced recycled fine aggregate from concrete demolition waste was investigated for potential replacement of sand in new concrete mixes. Tests for the waste material included visual examination, chemical composition, grain size distribution, specific gravity, and fineness modulus. Tests on the incorporated recycled Experimental Investigation of Recycled Fine Aggregate from

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Partial replacement of sand with marble waste and scoria for

The proportions of cement, water, and coarse aggregate were held constant in all the test mixes while the amount of scoria, marble, and fine aggregate was variable. A total of 90 (150 mm × 150 mm × 150 mm) concrete cubes and 9 specimens for each series of the mix were cast and tested for compressive strength test at 3, 7, and 28 When using mine refuse as fine aggregate, it is necessary to consider that adding it into the concrete composition reduces its placeability. It is shown in [ 22 ] that the maximum content of mine Free Full-Text Concretes Made of

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Recycling of industrial and agricultural wastes as

Aggregate mining disturbs the landscape of the area and blasting of rocks may disturb the surrounding rock hence its stability. Aggregate mining on unstable slopes and landslide-prone areas can trigger the situation. Elimination of literature, not in line with the scope of the study like those dealing with cement replacement and fineThe rapid rate of solid waste generation has led to a huge quantum of unattended wastes posing a major threat to the ecosystem. Over the years, concrete industry has acquired the credentials of being one of the largest consumers of some of the most vital natural resources.The cost of production of concrete has observed a sustained Feasibility assessment for partial replacement of fine aggregate

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Experimental Study on the Properties of Concrete Mixed with

As shown in Figure 3, the slumps and liquidity of concrete mixed with iron ore tailings decreased compared with that of normal concrete under the same condition (water, mixture ratio, admixture, etc.).This phenomenon arises because the particles of iron ore tailings are rough and occluded with coarse aggregate, so cohesion increases Ferronickel slag (FNS) is an industrial by-product of ferronickel alloy production at a high temperature which can be a promising potential to be used as fine aggregate to produce more sustainable concrete. In this study, the performance of concrete containing ferronickel slag sand and fly ash relating to alkali-silica reaction (ASR) and Performance of fly ash concrete with ferronickel slag fine aggregate

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The Potential Use of Waste Rock from Coal Mining for the

The effect of aggregate on elastic modulus was also studied using the testing equipment shown in Fig. 8 to evaluate the possibility of using aggregate from coal mining waste in producing concrete. The experimental results of the influence of aggregates on elastic modulus (E) at the ages of 7 and 28 days are given in Table 7 and shown in The use of marble wastes in concrete mixtures, causing air and water pollution, has been promoted in the academic and practical spheres of the construction industry. Although the effects of various forms (powder, fine, coarse and mixed) of this waste on the concrete compressive strength has been subject to a decent number of studies in Effects of Waste Powder, Fine and Coarse Marble Aggregates on Concrete

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Recycling Mine Tailings for a Sustainable Future Built

3.3 Fine Aggregate. With the increased demand and shortage of quality fine aggregate, the alternative sources for fine aggregates are being explored globally . Mine tailing as a replacement of fine aggregate in mortar and concrete has been studied widely, mainly due to its particle size and specific gravity.

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