New point of view on materials development

Elistratkin, M.Yu.; Lesovik, Valery; Zagorodnjuk, L H; Поспелова, Е. А.; Shatalova, S.

doi:10.1088/1757-899x/327/3/032020

Cited by 34 publications

(16 citation statements)

References 4 publications

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“…Practitioners usually determine challenges with existing EBIs initially designed and tried with populations diverse from their target populations, and launch required adaptation to make the interventions more appropriate [ 46 ]. Most local adaptations to enhance fit for energy disparity populations are not well evaluated or documented, even though some EBIs have been extensively adapted for different populations and assessed [ 47 ]. As a result, empirical information is always lacking concerning the possible success of particular adaptation practitioners to be considered [ 48 ].…”

Section: Methodological Approach: Review Strategymentioning

confidence: 99%

Utilization of Biomass to Ash: An Overview of the Potential Resources for Alternative Energy

et al. 2021

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Climate change and the potential depletion of fossil fuels have increased international demand for alternative and renewable energy sources. In terms of the energy sector, for example, most of the South-East Asian countries (SACs) have a large number of biomass sources due to their vast forest resources and agriculture-based economies. Thus, the critical review was aimed at highlighting the overview of biomass energy in South-East Asia as a dynamically developing region, in order to obtain economic and environmental benefits from the existing sources of biomass in the world. The current review analyzed the sources of biomass, as well as their energy potential, use, and management, based on reports from different countries, published studies, and scientific articles. In SAC, the main sources of biomass were found to be coconut residues, oil palm residues, sugar cane residues, rice straw, rice husks, wood waste, and firewood. The combined annual biomass potentials in the forestry and agricultural sectors in South-East Asia were approximately over 500 million tons per year and more than 8 gigajoule of total energy potentials. The study identified the challenges and barriers to using biomass in these countries to achieve sustainable use of biomass sources and recommended sustainable approaches to using biomass energy by comparing traditional uses of biomass. Smart grid technologies have ways for solutions for better electric power production and efficient ways for distribution and transmission of electricity. Smart grids require less space and can be more easily installed when compared to traditional grids because of their versatilities. Upcoming challenges include technology optimization for the following uses of biomass energy: direct combustion of woody biomass; pyrolysis and gasification of biomass; anaerobic digestion of organic waste to produce biogas; landfill gas production direct incineration of organic waste. The barriers in this technology are emissions of carbon and nitrogen oxides, unpleasant odors, as well as the uncontrolled harvesting of biomass, which can harm nature.

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Section: Methodological Approach: Review Strategymentioning

confidence: 99%

Utilization of Biomass to Ash: An Overview of the Potential Resources for Alternative Energy

et al. 2021

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“…It was documented that substituting 35–50% of cement with FA reduced the water need for obtaining the required slump of 5–7% in mortars [ 146 ]. The rate of bleeding of the FA’s suspension in water is compared with that of OPC in water in Figure 13 , with both suspensions containing equal weights of particles and fluid [ 206 , 207 ]. The rate of bleeding is low for FA considering its low specific gravity and fine graded particles, thereby resulting in settling and the ability to attract and retain water on the particle surface [ 5 ].…”

Section: Fresh State Propertiesmentioning

confidence: 99%

Fly Ash-Based Eco-Efficient Concretes: A Comprehensive Review of the Short-Term Properties

et al. 2021

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Development of sustainable concrete as an alternative to conventional concrete helps in reducing carbon dioxide footprint associated with the use of cement and disposal of waste materials in landfill. One way to achieve that is the use of fly ash (FA) as an alternative to ordinary Portland cement (OPC) because FA is a pozzolanic material and has a high amount of alumina and silica content. Because of its excellent mechanical properties, several studies have been conducted to investigate the use of alkali-activated FA-based concrete as an alternative to conventional concrete. FA, as an industrial by-product, occupies land, thereby causing environmental pollution and health problems. FA-based concrete has numerous advantages, such as it has early strength gaining, it uses low natural resources, and it can be configurated into different structural elements. This study initially presents a review of the classifications, sources, chemical composition, curing regimes and clean production of FA. Then, physical, fresh, and mechanical properties of FA-based concretes are studied. This review helps in better understanding of the behavior of FA-based concrete as a sustainable and eco-friendly material used in construction and building industries.

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“…Various mineral admixtures are added to the concrete to make it self-compacting. The flow of the concrete is impacted by various properties of the ingredients added, such as size, shape, texture, water absorption capacity, cohesion, and inter-particle attraction [36]. The composite material indicates different flow behavior when different ratios of the materials are added.…”

Section: Introductionmentioning

confidence: 99%

Rheological Behavior and Strength Characteristics of Cement Paste and Mortar with Fly Ash and GGBS Admixtures

et al. 2021

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A cement paste or mortar is composed of a mineral skeleton with micron to millimeter-sized grains, surrounded by water filaments. The cohesion or shear resistance in the cement paste and mortar is caused by capillary forces of action. In the case of mortar mixes, there is friction between the particles. Therefore, the mortar mixture shows both friction between particles and cohesion, while the paste shows only cohesion, and the friction between particles is negligible. The property of the cement paste is greatly influenced by the rheological characteristics like cohesion and internal angle friction. It is also interesting that when studying the rheology of fresh concrete, the rheological behavior of cement paste and mortar has direct applicability. In this paper, the rheological characteristics of cement paste and mortar with and without mineral admixtures, that is, fly ash and ground granulated blast-furnace slag (GGBS), were studied. A cement mortar mix with a cement-to-sand ratio of 1:3 was investigated, including fly ash replacement from 10% to 40%, and GGBS from 10% to 70% of the weight of the cement. A suitable blend of fly ash, GGBS, and ordinary Portland cement (OPC) was also selected to determine rheological parameters. For mortar mixtures, the flow table was conducted for workability studies. The flexural and split tensile strength tests were conducted on various mortar mixtures for different curing times. The results indicate that in the presence of a mineral mixture of fly ash and GGBS, the rheological behavior of paste and mortar is similar. Compared with OPC-GGBS-based mixtures, both cement with fly ash and ternary mixtures show less shear resistance or impact resistance. The rheological behavior of the mortar also matches the rheological behavior in the flow table test. Therefore, it is easy to use the vane shear test equipment to conduct cohesion studies to understand the properties of cement paste and mortar using mineral admixtures. The strength results show that the long-term strength of GGBS-based mixtures and ternary mixed mixtures is better than that of fly-ash-based mixtures. For all mixtures, the strength characteristics are greatest at a w/b ratio of 0.6.

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New point of view on materials development

Cited by 34 publications

References 4 publications

Utilization of Biomass to Ash: An Overview of the Potential Resources for Alternative Energy

Utilization of Biomass to Ash: An Overview of the Potential Resources for Alternative Energy

Fly Ash-Based Eco-Efficient Concretes: A Comprehensive Review of the Short-Term Properties

Rheological Behavior and Strength Characteristics of Cement Paste and Mortar with Fly Ash and GGBS Admixtures

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