Utilization of iron ore tailings as fine aggregate in ...
Jan 15, 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.
Utilization of iron ore tailings as fine aggregate in ...
Highlights. 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 microstructure of the UHPC matrix were studied.
Evaluation of iron ore tailings as replacement for fine ...
Sep 01, 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. They reported that the drying shrinkage of mixed sand is less than river sand concrete and with increase in IOT the drying shrinkage of mixed sand decreases.
Characterization of Iron Ore Tailings as Fine Aggregate
Iron ore tailings (IOTs) are common industrial solid waste products which are generated in enormous quantities during the production process of iron ore. By visual observation, this material shows some similarity with natural sand (NS); it was therefore desired to characterize the IOTs to further ascertain their use in concrete.
The Influences of Iron Ore Tailings as Fine Aggregate on ...
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.
Study on Utilization of Iron Ore Tailings as Fine ...
Abstract -In this study, M20 grade of concrete was produced 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 were evaluated at 7, 14 and 28 days.
Evaluation of iron ore tailings as replacement for fine ...
Sep 01, 2016 · However, the lower activity of iron tailings has restricted their deep development and utilization. As a result, more iron tailings are used as fine aggregates in concrete [8] [9] [10] [11] or as...
UTILIZATION OF IRON ORE TAILINGS AS REPLACEMENT TO …
In the present study Iron Ore Tailings (IOT) procured from Kudremukh Lakya Dam site (KIOCL Ltd.) are used as partial replacement to fine aggregates at levels of 10, 20,30,40,50 percent and the basic material properties, strength parameters are studied. It is found that as the IOT percentage increases in the mix workability is reduced.
Effects of iron ore tailings on the compressive strength ...
In light of this, there is an urgent need for low-cost materials such as fine aggregate in UHPC production. Iron ore tailings (IOT) are mining waste obtained during the beneficiation process to concentrate iron ore , . The discharge capacity of tailings in China increases every year, accounting for more than 50% of the worlds tailings discharge.
(PDF) Recovery of Ultra-Fine Iron Ore from Iron Ore Tailings
Much research has been carried out on the resource utilization of iron tailings powder, including concrete fine aggregate, sewage treatment, filling material of composite material, recovered iron...
Utilization of iron ore tailings as fine aggregate in ...
In this paper, the possibility of using iron ore tailings to replace natural aggregate to prepare UHPC under two different curing regimes was investigated. It was found that 100% replacement of...
Characterization of Iron Ore Tailings as Fine Aggregate
The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...
Mechanical properties and pore structure of recycled ...
The testing results showed that the use of recycled coarse aggregate (RCA) led to the reduction of strength of concrete, but this strength loss can be compensated by …
Experimental Study on the Properties of Concrete Mixed ...
The iron ore tailings were collected from a copper-iron mine in Zibo city. The particles appear as fine gray granular, and the fineness modulus was within 1.9~2.3. Comparison of particle size between the collected iron ore tailings and natural sand from Wen River was shown in Figure 1. Figure 1
Effect on compressive and tensile strength of cement ...
Tailings are the materials left over, after the process of separating the valuable fraction from the worthless fraction of an iron ore. Iron ore tailings are the waste generated from iron ore industry after process. It is a very fine aggregate residue resulting from the extraction of iron from iron ore. 3 METHODOLOGY-
Utilization of iron ore tailings as replacement to fine ...
An attempt is made with Iron Ore Tailings as a partial replacement of fine aggregate in the concrete. The main aim of this section is to present an overview of research work carried out by various...
iron as a substite aggregate in concrete
Study on Utilization of Iron Ore Tailings as Fine. Aggregates and GGBS as Partial Substitute in Concrete Shwetha R A Assistant professor, Karnataka, India Abstract In this study, M20 grade of concrete was produced by complete replacing fine aggregate by Iron ore tailings, and GGBS as partial substitute to cement at 10%, 20%, 30% and 40%.
sea ore as fine aggregate in iron project
Suitability of iron ore tailings and quarry dust as fine aggregates for Suitability of iron ore tailings and quarry dust as fine aggregates for concrete and thereby to utilize the enormous quantities of wastes from Itakpe mines and the different levels of sand replacement by either iron ore tailings or .