Reuse of coal mining waste to lengthen the service life of cementitious matrices

Caneda-Martínez, Laura; Sánchez, Javier; Medina, César; Rojas, M.I. Sánchez de; Torres, Julio; Frías, Moisés

doi:10.1016/j.cemconcomp.2019.03.007

Cited by 29 publications

(9 citation statements)

References 51 publications

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“…The suitability of CMWGs for a particular construction application can vary from one mine to another due to their diverse mineral contents. It was found in this review that CMWGs are good SCM candidates because they often contain large fractions of clay minerals that can be conditioned (and blended with other materials when necessary) to acquire pozzolanic properties, as has been demonstrated in many recent studies (e.g., Bich et al 2009;Frías et al 2012;Vigil de la Villa et al 2014;García Giménez et al 2016;Caneda-Martínez et al 2019;Rodríguez et al 2021). It was also concluded in this review that more research is needed to investigate the propensity for CMWGs to promote ASR (since this condition can take years to realise) and ACR (since the extent to which this reaction impacts durability is not sufficiently delineated from other processes).…”

Section: Discussionmentioning

confidence: 77%

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Nash

Galdo

et al. 2022

Journal of Cleaner Production

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Section: Discussionmentioning

confidence: 77%

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Nash

Galdo

et al. 2022

Journal of Cleaner Production

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“…Section loss ( P corr ) assuming uniform corrosion [ 24 , 25 ] ( Figure 10 ) was estimated using the following equation based on Faraday’s law:

where W Fe is the molecular weight of Fe, n the number of electrons transferred, F the Faraday constant, and ρ is iron density.…”

Section: Resultsmentioning

confidence: 99%

“…Section loss (P corr ) assuming uniform corrosion [24,25] (Figure 10) was estimated using the following equation based on Faraday's law:…”

Section: Corrosion-induced Section Lossmentioning

confidence: 99%

“…The table shows results obtained on mortar or concrete specimens [ 14 , 15 , 17 , 18 , 19 , 21 , 23 , 24 , 25 , 26 ] or in alkaline solution [ 16 , 20 , 22 ]. The values listed in the table are normally the result of short-term testing conducted in which the steel was immersed in a solution.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 below lists some of the values for the anodic and cathodic Tafel slopes and anodic and cathodic exchange current densities found in the literature. A/mm 2 [26] The table shows results obtained on mortar or concrete specimens [14,15,[17][18][19]21,[23][24][25][26] or in alkaline solution [16,20,22]. The values listed in the table are normally the result of short-term testing conducted in which the steel was immersed in a solution.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion of Steel Rebars in Anoxic Environments. Part I: Electrochemical Measurements

et al. 2021

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The number of reinforced concrete structures subject to anoxic conditions such as offshore platforms and geological storage facilities is growing steadily. This study explored the behaviour of embedded steel reinforcement corrosion under anoxic conditions in the presence of different chloride concentrations. Corrosion rate values were obtained by three electrochemical techniques: Linear polarization resistance, electrochemical impedance spectroscopy, and chronopotenciometry. The corrosion rate ceiling observed was 0.98 µA/cm2, irrespective of the chloride content in the concrete. By means of an Evans diagram, it was possible to estimate the value of the cathodic Tafel constant (bc) to be 180 mV dec−1, and the current limit yielded an ilim value of 0.98 µA/cm2. On the other hand, the corrosion potential would lie most likely in the −900 mVAg/AgCl to −1000 mVAg/AgCl range, whilst the bounds for the most probable corrosion rate were 0.61 µA/cm2 to 0.22 µA/cm2. The experiments conducted revealed clear evidence of corrosion-induced pitting that will be assessed in subsequent research.

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Study on Permeability Performance and Prediction Model of Coal Gangue Pervious Concrete

Xia,

Zhu,

et al. 2024

Lecture Notes in Civil Engineering

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To expand the in-situ utilization of coal gangue in mining area and meet the demand of “sponge city”, the permeability coefficient, total porosity and effective porosity of coal gangue pervious concrete (CGPC) in different mixtures were deeply explored. The results show that the permeability coefficient of CGPC can reach 1.5 ~ 2 mm/s. In general, the permeability coefficient and porosity of CGPC increase as the aggregate particle size and designed porosity increase. Effective porosity is the key factor affecting the permeability coefficient of CGPC. More importantly, the prediction model of permeability coefficient of CGPC is established based on the mix proportion, providing a theoretical reference for the application of CGPC in pervious pavement of mining areas.

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Reuse of coal mining waste to lengthen the service life of cementitious matrices

Cited by 29 publications

References 51 publications

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Corrosion of Steel Rebars in Anoxic Environments. Part I: Electrochemical Measurements

Study on Permeability Performance and Prediction Model of Coal Gangue Pervious Concrete

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