Utilization of iron ore tailings as fine aggregate in ...
15-01-2014 · Iron ore tailings have the potential to be used as fine aggregate because they are relatively inert and the particle size of the tailings is significantly larger than that of cement. This stone investigated the use of iron ore tailings to replace natural sand as fine aggregate and studied the impact that various replacement levels had on the mechanical properties of UHPC.
Evaluation of iron ore tailings as replacement for …
01-09-2016 · They reported that the drying shrinkage of concrete for grade C30 and C60 concrete are lower than control specimen. Zhang et al. also investigated properties of concrete with iron ore tailings and manufactured sand as fine aggregate.
The Influences of Iron Ore Tailings as Fine …
The present study looks for the feasibility of preparing UHPC with iron ore tailings (IOT for short) as fine aggregate. To enhance outstanding high performances, some influences on UHPC mortars were investigated such as different kinds of sands, different mix ratio of sands, and different largest particle size of fine aggregate. The results show that IOT have negligible poorer aggregate ...
Evaluation of iron ore tailings as replacement for …
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.
Evaluation of iron ore tailings as replacement for …
01-09-2016 · Iron ore tailings are industrial solid wastes generated from mineral processing. The disposal of iron ore tailings leads to environmental threat and serious security because of their tiny particle size and large storage. In this paper, suspension magnetization roasting and magnetic separation technology were utilized to recover iron tailings.
Utilization of iron ore tailings as fine aggregate in ...
Iron ore tailings were used as aggregate at different replacement levels to make UHPC. • The tailings were characterized by techniques like SEM, XRD and nanoindentation. • The mechanical properties of UHPC mortars and UHPC were measured. • The pore structure and …
Evaluation of iron ore tailings as replacement for …
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. The major aim of this study is to evaluate IOT as replacement for river sand in concrete and compare with the result of conventional concrete.
Study on Utilization of Iron Ore Tailings as Fine ...
using iron ore tailings as fine aggregate. Determining the compressive strength of concrete using iron ore tailings as fine aggregate with different proportions of GGBS (Ground Granulated Blast Furnace Slag) i.e. 10, 20, 30&40 percentages. 2. MATERIALS AND METHODOLOGY
UTILIZATION OF IRON ORE TAILINGS AS REPLACEMENT TO FINE ...
Partial replacement of iron ore tailings with the conventional sand. Determining the strength properties of concrete for 3, 7, 28 and 56days. Development of fatigue model by log normal distribution and comparing with IRC. 2. LITERATURE REVIEW 2.1 General An attempt is made with Iron Ore Tailings as a partial replacement of fine aggregate in the ...
Mechanical properties and pore structure of …
The purpose of this study was to assess the performance of introducing polypropylene (PP) fibers into recycled aggregate concrete containing iron ore tailings (TRAC). Thus, we prepared four different concretes, including natural aggregate concrete (NAC), recycled aggregate concrete (RAC), TRAC and fiber-reinforced tailings recycled aggregate concrete (TRAC-PP) series.
iron ore tailings as fine aggregate
iron ore tailings as fine aggregate | Solution for ore mining iron ore tailings may be utilised for complete replacement for conventional aggregates in concrete. The iron ore tailings aggregates concrete exhibited a good mechanical strength and even in the case of compressive strength, there was an improvement of 11.56% over conventional aggregates concrete.
PREPARATIONS OF COMPOSITE CONCRETES USING IRON ORE ...
iron ore tailings. Their flex-compression ratio was 1/6 and 10 % higher than that of the control group that used sand as the fine aggregate. The crack resistance of the iron ore tailings concrete was studied at the same time, and the microstructure was observed with an SEM.
Utilisation of iron ore tailings as aggregates in concrete
Utilisation of iron ore tailings as aggregates in concrete Francis Atta Kuranchie 1*, Sanjay Kumar Shukla , Daryoush Habibi and Alireza Mohyeddin1 Abstract: Sustainable handling of iron ore tailings is of prime concern to all stakehold-ers who are into iron ore mining. This study seeks to add value to the tailings by utilis-
iron ore tailings as fine aggregate - hdmatador.nl
Read "Utilization of iron ore tailings as fine aggregate in ultra high performance concrete Construction and Building Materials" on DeepDyve the largest online . Effect on compressive and tensile strength of …
Utilization of iron ore tailings as fine aggregate in ...
Notable among the alternatives are to use iron ore tailing to manufacture bricks, ceramic tiles (Das et al. 2012), as fine aggregate in mortar, and coarse aggregate in concrete (Huang et al. 2013 ...
Tailings - Wikipedia
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from ore can be done two ways: placer mining, which uses water ...
USING IRON ORE TAILINGS AS PARTIAL …
using iron ore tailings as partial replacement of fine aggregate in asphalt concrete production. home engineering project topics and materials using iron ore tailings as partial replacement of fine aggregate in asphalt concrete production. project file details. original author (copyright owner): ezekiel adamu
Utilization of iron ore tailings as replacement to …
IJRET: International Journal of Research in Engineering and Technology. eISSN: 2319-1163 | pISSN: 2321-7308. UTILIZATION OF IRON ORE TAILINGS AS REPLACEMENT TO FINE AGGREGATES IN CEMENT CONCRETE ...
Effect on compressive and tensile strength of cement ...
The successful utilization of iron ore tailing (IOT) as fine aggregate would turn this waste material into valuable resources, reduction in the strain on supply of natural sand and economy in concrete production. 1.2 Objective Partial replacement of iron ore tailings with the conventional sand. Checking the workability of the concrete when fine ...
Properties of Sand Grout with Iron Ore Tailings as …
Innovative researches on properties of sand grout with iron ore tailings (IOT) as fine aggregate were conducted. The results show that exclusive ferrous mineral in the IOT is merrihueite beside quartz in both IOT and nature sand (NS). IOT have similar thermal stability with NS. Sand grout with IOT has higher compressive strengths resulted from existence of ferrous minerals and more complex ...