Sustainable transformation of sewage sludge ash and waste industrial additive into green cement blend

Goswami, Shubham; Shukla, Dharmendra Kumar; Singh, P. K.

doi:10.1002/suco.202100120

Cited by 7 publications

(1 citation statement)

References 38 publications

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“…e exponential production and consumption of cement and cement products creating a huge environmental burden with the exploitation of natural resources are becoming a global issue [9]. e application of limestone during the clinkering process results in a signi cant amount of emissions (5-6% of total greenhouse gas emissions) [10][11][12] by consuming a huge amount of nonrenewable resources [7,13].…”

Section: Introductionmentioning

confidence: 99%

Nanoprocessing of Industrial Rejects for Controlling Operational Energy of Buildings

Tembhurkar

Nayar

Azad

et al. 2022

Advances in Civil Engineering

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This study investigates the pozzolanic potential of industrial waste, which fails to meet the chemical composition as defined by the various international standards, e.g., IS: 3812 (Part 1): 2017 and ASTM C618-19 to adopt as a supplementary cementitious material. The effects of mechanical nanoprocessing on pozzolanic reaction efficiency, impact on energy efficiency, and construction affordability were studied. The result of mechanical milling shows the improvement in pozzolanicity, and the physicomechanical characteristics of novel concrete incorporated with identified industrial waste are comparable with control concrete. The building energy simulation was carried out using the BIM software for the house, modelled with controlled concrete, and novel concrete incorporating the identified milled industrial waste. The peak cooling load and building material cost of a novel concrete model house were 34% and 9.09% less than the conventional concrete. The study reveals that the chemical characterization provided in international standards shall not be the only criteria to decide the suitability of the materials to use as supplementary cementitious material, whereas the same can be examined and improved through various treatments, and mechanical nanoprocessing may be one of the best options. Cement production and utilization affect the environment. To reduce the concern, pozzolanic investigation of industrial waste is necessary, which can address the issue of uncontrolled extraction of natural resources, emission, disposal, and pollution globally.

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Section: Introductionmentioning

confidence: 99%

Nanoprocessing of Industrial Rejects for Controlling Operational Energy of Buildings

Tembhurkar

Nayar

Azad

et al. 2022

Advances in Civil Engineering

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Studying the effectiveness of sewage sludge ash and its combination with natural pozzolans in controlling alkali–silica reaction

Amirjani,

Maleki,

Ramezanianpour

2024

Structural Concrete

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Sewage sludge ash (SSA), obtained by the incineration of sewage sludge, which is a byproduct of water treatment, could be used as a cement replacement material (CSR) to promote sustainability. SSA characteristics differ due to its different sources, compositions, and incineration methods. On the other hand, extensive investigations have highlighted the CSRs' ability to control alkali–silica reaction (ASR) as a destructive phenomenon, threatening durability. Hence, this study was conducted in order to study the ability of SSA with two finenesses, three replacement levels, and also its ternaries with trass or pumice, as natural pozzolans, to control ASR. The utilized SSA did not meet the requirements of a pozzolan at either finenesses. The results revealed that despite the fact that SSA generally reduced ASR expansion significantly, it only managed to control ASR at 50% replacement level. This was true for both finenesses. Furthermore, ternaries improved resistance against ASR expansion significantly, providing the ability to control ASR at lower replacement levels of SSA. The Si/Ca ratio was the key reason of SSA's ability to control ASR as it contained 1.5 and 2.5 times more SiO2 and Al2O3 than Portland cement respectively, and about one third of its CaO. Scanning electron microscopey (SEM), energy dispersive spectroscopy (EDS), and mapping confirmed that the relative amounts of Si, Al, and Ca in the SSA was crucial.

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Sewage Sludge: Is It a Sustainable Fertilizer or a Source of Contaminants?

Hasan,

Khan

et al. 2024

Environmental Engineering and Waste Management

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Sustainable transformation of sewage sludge ash and waste industrial additive into green cement blend

Cited by 7 publications

References 38 publications

Nanoprocessing of Industrial Rejects for Controlling Operational Energy of Buildings

Nanoprocessing of Industrial Rejects for Controlling Operational Energy of Buildings

Studying the effectiveness of sewage sludge ash and its combination with natural pozzolans in controlling alkali–silica reaction

Sewage Sludge: Is It a Sustainable Fertilizer or a Source of Contaminants?

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