Disintegration of concrete construction induced by acid mine drainage attack

Ekolu, Stephen O.; Diop, Souleymane; Azene, Firehiwot; Mkhize, N

doi:10.17159/2309-8775/2016/v58n1a4

Cited by 27 publications

(12 citation statements)

References 34 publications

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“…Various recent studies [1]- [3] have shown pervious concrete to be an effective medium for treatment of acid mine drainage (AMD). This material is made by mixing single-size coarse aggregate with Portland cement and water to produce highly porous concrete.…”

Section: A Pervious Concrete In Column Experimentsmentioning

confidence: 99%

Gravity-Fed Column Configuration for Acid Mine Drainage Experiment

Solomon¹,

Ekolu²,

Musonda³

2019

IJET

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The aim of this study was to develop a gravity feed column setup and to set the flow parameters based on experimentally measured flow rates and pressure drops. Prior to the present study the authors used a column setup in which acid mine drainage was pumped through pervious concrete filled columns, using electrical peristaltic fish pond pumps. The gravity feed setup in the present study was designed to overcome the need to rely on electrical power supply. The study describes the design setup of four gravity columns. The design requirements comprised determination of appropriate column sizes, pressure heads and hydraulic gradients required to produce a low flow rate of about 1 mL/min at outlets of the columns filled with pervious concrete media. Of special interest is the hydraulic gradient being responsible for continuous flow in each column. Following completion of the design setup , continuous flow rates of 0.60 to 0.80 mL/min were attained with a Reynolds number of about 4.0 in the columns filled with pervious concrete. Further research is in progress involving employment of the gravity-feed system for acid mine drainage treatment investigations.

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Section: A Pervious Concrete In Column Experimentsmentioning

confidence: 99%

Gravity-Fed Column Configuration for Acid Mine Drainage Experiment

Solomon¹,

Ekolu²,

Musonda³

2019

IJET

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“…The commonly used test procedure of assessment is to immerse concrete samples in an acid solution (known as the immersion method), which directly investigates the resistance of concrete to acid. Many researchers [48,51,[76][77][78][79][80][81][82] have used this method to evaluate the effectiveness of supplementary cementitious materials (SCMs) in improving the acid resistance of the concrete. However, there are many drawbacks regarding the immersion method.…”

Section: Cement-based Rehabilitation-materials Selection Based On the mentioning

confidence: 99%

The Sustainability of Concrete in Sewer Tunnel—A Narrative Review of Acid Corrosion in the City of Edmonton, Canada

Hu²,

Liu

2018

Sustainability

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This paper is intended to conduct a narrative review on the acid corrosion of sewer tunnel concrete in the City of Edmonton-an investigation on the MIC (microbially induced corrosion) mechanism and the potential control methods to improve the sustainability of concrete. Firstly, three categories of main influencing factors were identified for the rate of MIC: hydraulic parameters, environmental factors, and concrete mixture design. Secondly, it is found that the sewer tunnel design plays an essential role in the control of the MIC. Building on that, a review was conducted on eight municipal drainage design standards in consideration of the MIC, indicating a lack of design standards of the flow velocity and pipe material. Finally, an investigation was done for cement-based rehabilitating techniques and materials.

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“…Due to its distinctive bright colours, AMD alters the environmental aesthetic, causes habitat alteration and disruption of the nutrient cycle [10]. Moreover, due to its acidity, AMD induces corroding effects on infrastructure such as bridges and sculptures and contributes to the deterioration of roads around the impacted areas [11]. Additional impacts include the loss of biodiversity and decline of aquatic ecosystems [12].…”

Section: Introductionmentioning

confidence: 99%

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

Mapukata,

Mudzanani,

Maurice Chauke

et al. 2024

Hydrology - Current Research and Future Directions

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Although mining plays a vital role in the economic development of many countries, devastating environmental repercussions are associated with it. The extraction of mineral resources inevitably results in the generation of acid mine drainage (AMD), which entails intricate oxidation interactions that occur under ambient conditions in abandoned and active mines. The arbitrary release of AMD can lead to a series of long-term environmental problems, degradation of aquatic habitats and health complications. Over the years, extensive progress has been made in the prevention and treatment of AMD, with some processes even progressing as far as the commercialisation level. This chapter therefore discusses the process of AMD formation, preventative and control measures and AMD treatment options applicable to both operating and developed mines, as well as to researchers interested in environmental remediation and rehabilitation. Advances in mineral beneficiation and water reclamation strategies employed in the AMD treatment processes are highlighted to shed light on strides being made towards promoting a circular economy in mining industries. The featured work therefore demonstrates the global progress towards environmental protection and water resource management. The challenges and loopholes associated with the current AMD treatment methods are deliberated and possible future prospects in the field are proposed.

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Disintegration of concrete construction induced by acid mine drainage attack

Cited by 27 publications

References 34 publications

Gravity-Fed Column Configuration for Acid Mine Drainage Experiment

Gravity-Fed Column Configuration for Acid Mine Drainage Experiment

The Sustainability of Concrete in Sewer Tunnel—A Narrative Review of Acid Corrosion in the City of Edmonton, Canada

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

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