Compressive strength of the mixtures containing iron filings varied between 28.21 to 40.44 MPa at 28 days, while flexural strength ranged from 4.51 to 6.51 MPa. The study highlighted the environmental benefits of reusing iron filings in concrete, although with a decrease in compressive and flexural strength.

In order to comprehensively utilize iron ore tailings (IOTs), the possibility of using IOTs as raw materials for the preparation of cementitious composites (IOTCCs) was investigated, and IOTCC was further applied to …

Using a molding pressure of 60 MPa, the brick achieved a compressive strength of 16.02 MPa and a flexural strength of 2.72 MPa. Elevating the molding pressure assisted in expelling air trapped within the pores, facilitating the infiltration of the alkali activator into the interior of the raw materials and enhancing the contact between particles.

In civil engineering, both rapid setting and delayed setting are needed for various application scenarios. In order to regulate the setting time of concrete, the iron ore tailings-blast furnace slag (IOT-BFS)-based geopolymers were synthesized with a broad range of setting time and a high compressive strength in this study. The factors of iron ore tailings content, alkali …

Ismail and Al-Hashmi conducted a sequence of experimental tests on the mechanical behavior of concrete made from abandoned iron ore tailings in Iraq, and the findings showed that it performed better than regular concrete and displayed greater compressive strength and flexural strength. Iron ore tailing (IOT) application as fine aggregate in ...

The uniaxial compressive strength of iron ore exhibits a linear increase with grade, ranging from 67.70 MPa at 28% grade to 105.09 MPa, 119.88 MPa, 136.13 MPa, and 156.87 …

At 20% replacement of aggregate (in concrete) with iron ore tailings, it was reported that the resultant concrete performed better in terms of compressive and tensile strength than for concretes with 0% iron ore replacement. 37 GSC Advanced Engineering and Technology, 2022, 03(02), 036–051 Alzaed, [14] examined the impact that iron filings ...

To study the role of glass powder and iron ore tailings combination in concrete, The properties such compressive strength, flexural strength, tensile strength and also durability parameters likely ...

Effect of iron ore tailings on the compressive strength exposed to thermal cycles at (a) 200 • C; (b) 400 • C; (c) ... tensile and flexural strength of 40.16 MPa, 2.8 MPa, and 4.18 MPa ...

The effects of the initial setting time, curing temperature, curing time and activator content on the unconfined compressive strength (UCS), water absorption and other durability properties of the ...

The ultrasonic velocities and compressive strength of frozen and thawed iron ore are strongly ... may therefore be expected to provide a good estimate of the strength of iron ore frozen and unfrozen. ... axial stress 1.38 MPa; confining stress 340 kPa. ~ " from - …

The uniaxial compressive strength of iron ore exhibits a linear increase with grade, ranging from 67.70 MPa at 28% grade to 105.09 MPa, 119.88 MPa, 136.13 MPa, and 156.87 MPa, respectively. The main differences in the mineralogical characteristics of the different iron ore grades are reflected in the chemical composition characteristics.

Iron (Fe) is a metal that has been known since ancient times. In fact, the Earth's crust is made up of 5% of iron, which is the second most abundant metal after aluminum.

Uniaxial compressive strength (UCS) is a key physical test relevant to iron ore crusher design and rock geomechanics for mining. Tests are typically performed on intact lengths of NQ, HQ, or PQ diamond drill core and record the maximum axial load sustained at the point of failure.

Wang et al. found that when the iron ore content was increased from 15% to 20%, the compressive strength of ferro coke decreased from 3.49 KN to 2.99 KN[12]. Zhang et al. demonstrated that when 15% of iron ore was added to coking coal, coke reactivity was increased from 42.5% to 81%, and the crushing strength was reduced from 89% to 79%[13].

The compressive strength of the concrete with iron ore tailings after freezing-thawing was approximately 90% that of the reference concrete; hence, the compressive strength of the tailing mixes after freezing-thawing had some degree of discount . When used in buildings with antifreeze requirements, the concrete needs to be combined with an air ...

The use of Iron Ore Tailings (IOT) as finer aggregates and/or fillers in geopolymer mortars is a possible alternative ... (compressive strength of 34.0 MPa), 7 days (compressive strength of 50.3 ...

Effect of Iron Ore Tailing on Compressive Strength of Manufactured Laterite Bricks and Its Reliability Estimate Yisa, G. L. 1 Akanbi, D. O. 1 Agbonkhese, O. Ahmed, M. K 1 Sani, J. E 2

The iron ore tailings–based cementitious composite with 0.02 wt.% graphene shows an extremely high flexural strength of 15.05 MPa at 3 days, which is 134.4% higher than that of the iron ore tailings–based cementitious composite without graphene.

The stabilization of CEBs with CCR increased the dry compressive strength (CS) from 1.1 MPa with 0% CCR to 4.3 MPa with 10% CCR and above; decreased the bulk density (ρb:1800–1475 kg/m3) and ...

Table 1. Typical values of uniaxial strength (in MPa) for nine common rock types (after Johnson and Degraff, 1988). Rock Tensile Strength (MPa) Compressive Strength (MPa) Limestone Sandstone Sandstone Sandstone Mudstone Limestone Limestone Ironstone Sandstone 18.00 ± 0.62 (20) 19.17 ± 0.21 (23) 23.10 ± 0.48 (19) 24.21 ± 0.83 (8) 35.17 ± 3. ...

The laboratory experiments reveal the uniaxial compressive strength value of collected ore sample 98.09 Mpa with elastic modules of 79.113 Mpa and 0.12 Poisson ratios in sample no. 18...

According the ISRM standard terminology the uniaxial compressive strength of studied samples of interested area is moderate (25-50 MPa), medium (50-100 MPa), and high …

From Fig. 3b, it can be seen that when cured at 80°C, the 28 d strength of K-80 and M-80 is 32.5and 33.6 MPa, the 270 d strength is 35.7 and 36.6 MPa, and the 360 d strength is 35.7 and 36.8 MPa, respectively. Regardless of the age, the strength of specimens mixed with magnetite ore is slightly higher than that of specimens without magnetite.

The average density of the iron ore samples was 4220 kg·m −3, the average compressive strength was 212.92 MPa, the average tensile strength was 19.49 MPa, the average elasticity modulus was 73.55 GPa, and the average Poisson's ratio was 0.27.

The attained compressive strength and split tensile strength for 15% iron ore tailings addition are 30% and 11% lesser respectively than the control mix, but higher than the design strength. The reduction of compressive strength and split tensile strength may be due to the very less concentration of SiO 2 and the low-grade iron ore tailings ...

Based on the results of the compressive strength and critical strain of the iron ore uniaxial compression test, the micromechanical parameters of iron ore were calculated using the proposed method, as listed in Table 9. To verify the precision of the method, a DEM simulation experiment was conducted using the calibrated results.

On this basis, the compressive strength values are set to 70 MPa, 95 MPa, and 120 MPa, the value of the shear stiffness per unit area is taken as 3 × 10 10 N/m 3 according to the literature [37]. The corresponding parameter values of the normal stiffness per unit area, shear stiffness per unit area, and critical shear stress are obtained using ...

Keywords—sand; iron ore tailing; compressive strength; flexural strength; reinforced concrete beam I. INTRODUCTION The increasing demand for heavy construction material like steel and iron has resulted in the establishment of many iron ore mining companies. Iron ore tailing is a waste generated from the iron ore industry (vide Figure 1).

Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application ...