Environmental impact, durability performance, and interfacial transition zone of iron ore tailings utilized as dam concrete aggregates

Lv, Xingdong; Lin, Yanwen; Chen, Xia; Shi, Yan; Liang, Renqiang; Wang, Rongkai; Peng, Ziling

doi:10.1016/j.jclepro.2021.126068

Cited by 48 publications

(13 citation statements)

References 29 publications

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“…The Size distribution curve of composite binder containing IOT was very close optimization curve. So, By Adding the IOT Packing density increased [10][11][12][13][14]. Water to binder ratio reduced means, it will give maximum strength.…”

Section: Introductionmentioning

confidence: 99%

Study on Properties of Concrete with Iron Ore Tailing and Glass Waste

Sushmitha

Dhanabal²

2021

J. Mod. Mater.

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The aim of this research is to test the characteristics of concrete by substitute fine aggregate with iron ore tailings and partial glass powder as in the place of cement. Concrete with waste products such as glass powder and iron ore tailings offer technical, economic and environmental advantages. In this experimental investigation, glass powder is replaced with cement by 10%, 20% and 30% and iron ore tailings with fine aggregates by 30% which is the optimum percentage. 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 water absorption investigation for M40 concrete is carried out with different percentages of glass powder by keeping the iron ore tailings percentage constant. At 30% glass powder substitution as cement and sand with IOT increases concrete effectiveness. The concrete with 10% glass powder & 30% iron ore tailings showed a higher strength compared to the conventional mix for 28 days. Concrete mix containing 10% GP and 30% IOT showed higher flexural strength of 5.05 MPa for 28 days. Splitting tensile strength value is also increasing i. e for 10% glass powder and 30% IOT, obtained splitting tensile strength was 4.48 MPa and modulus of elasticity value was has also increased. Water absorption experiment consequences results that water absorption decreases with an increase in GP percentage. The concrete workability tends to decrease when with glass powder content increase. Concrete containing 10% glass powder and 30% IOT showed maximum strength and it is considered as the optimum dosage.

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Section: Introductionmentioning

confidence: 99%

Study on Properties of Concrete with Iron Ore Tailing and Glass Waste

Sushmitha

Dhanabal²

2021

J. Mod. Mater.

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show abstract

“…The Size distribution curve of composite binder containing IOT was very close optimization curve. So By Adding the IOT Packing density increased (Han et al, 2020), (Wang et al, 2016), (Thomas et al, 2013), (Lv et al, 2021), (Zhang et al, 2020). Water to binder ratio reduced means, it will give maximum strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of Iron Ore Tailing and Glass Powder on Concrete Properties

Dhanabal

Sushmitha

2022

ric

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The aim of this research is to test the characteristics of concrete by substitute fine aggregate with iron ore tailings and partial glass powder as in the place of cement. Concrete with waste products such as glass powder and iron ore tailings offers technical, economic and environmental advantages. In this experimental investigation, glass powder is replaced with cement by 10%, 20% and 30% and iron ore tailings with fine aggregates by 30% which is the optimum percentage. 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 water absorption investigation for M40 concrete is carried out with different percentages of glass powder by keeping the iron ore tailings percentage constant. At 30% glass powder substitution as cement and sand with IOT increases concrete effectiveness. The concrete with 10% glass powder & 30% iron ore tailings showed a higher strength compared to the conventional mix for 28 days. Concrete mix containing 10% GP and 30% IOT showed higher flexural strength of 5.05 MPa for 28 days. Splitting tensile strength value is also increasing i. e for 10% glass powder and 30% IOT, obtained splitting tensile strength was 4.48 MPa and modulus of elasticity value was has also increased. Water absorption experiment consequences results that water absorption decreases with an increase in GP percentage. The concrete workability tends to decrease when with glass powder content increase. Concrete containing 10% glass powder and 30% IOT showed maximum strength and it is considered as the optimum dosage.

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“…It is more meaningful for practical engineering to add iron tailings powder directly into mortar or concrete. Generally, large-size iron tailings of 0.5~4.75 mm are used as concrete aggregate, Lv et al [6] employed iron ore tailing aggregates (IOTA) to replace normal aggregate (NA) in dam concrete. And chloride ion penetration, sulfate erosion and wear resistance tests showed that the IOTA concrete possess better ITZ and durability due to high strength and angle shape of IOTA.…”

Section: Introductionmentioning

confidence: 99%

Reutilizing Waste Iron Tailing Powders as Filler in Mortar to Realize Cement Reduction and Strength Enhancement

et al. 2022

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Recently, the massive accumulation of waste iron tailings powder (WITP) has resulted in significant environmental pollution. To solve this problem, this paper proposes an original mortar replacement (M) method to reuse waste solids and reduce cement consumption. In the experiment, the author employed an M method which replaces water, cement, and sand with WITP under constant water/cement and found that the strength development can be significantly improved. Specifically, a mortar with 20% WITP replacement can obtain a 30.95% improvement in strength development. To study the internal mechanism, we performed experiments such as thermogravimetric analysis (TGA), mercury intrusion porosimetry (MIP), and SEM. The results demonstrate that the nucleation effect and pozzolanic effect of WITP can help promote cement hydration, and MIP reveals that WITP can effectively optimize pore structure. In addition, 1 kg 20% WITP mortar reduced cement consumption by 20%, which saves 19.98% of the economic cost. Comprehensively, our approach achieves the effective utilization of WITP and provides a favorable reference for practical engineering.

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Environmental impact, durability performance, and interfacial transition zone of iron ore tailings utilized as dam concrete aggregates

Cited by 48 publications

References 29 publications

Study on Properties of Concrete with Iron Ore Tailing and Glass Waste

Study on Properties of Concrete with Iron Ore Tailing and Glass Waste

Effect of Iron Ore Tailing and Glass Powder on Concrete Properties

Reutilizing Waste Iron Tailing Powders as Filler in Mortar to Realize Cement Reduction and Strength Enhancement

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