Partial substitution of cement by the association of Ferronickel slags and Crepidula fornicata shells

Bouasria, Manal; Khadraoui, Fouzia; Benzaama, Mohammed-Hichem; Touati, Karim; Chateigner, Daniel; Gascoin, Stéphanie; Pralong, V.; Orberger, B.; Babouri, Laidi; Mendili, Yassine El

doi:10.1016/j.jobe.2020.101587

Cited by 20 publications

(19 citation statements)

References 52 publications

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“…Fuel emissions account for 40% of total CO 2 from the cement manufacturing process. Therefore, both cement substitutes [14][15][16][17] and alternative sources of energy [18][19][20][21] that can be used in concrete and cement production are sought, as presented in the current research. Furthermore, the building sector is consuming huge amounts of energy, as existing buildings need electricity and heating and cooling systems [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Influence of Polypropylene, Glass and Steel Fiber on the Thermal Properties of Concrete

et al. 2021

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The variety of approaches to tackle climate change reflects the size of this global problem. No technology will act as a panacea to cure the greenhouse gas emissions problem, but new building materials with byproducts or even wastes have the potential to play a major role in reducing the environmental impacts of the building sector. In this study, three potential solutions of concrete with dispersed reinforcement in the form of recycled fibers (polypropylene, glass and steel) were examined. The aim is to present a detailed analysis of the thermal properties of new building materials in an experimental approach. Concrete mixtures were prepared according to a new, laboratory-calculated recipe containing granite aggregate, a polycarboxylate-based deflocculant, Portland cement (52.5 MPa) and fibers. This experimental work involved three different contents of each fiber (0.5%, 0.75% and 1.0 wt.%), and all tests were carried after the complete curing cycle of concrete (28 days).

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Section: Introductionmentioning

confidence: 99%

Influence of Polypropylene, Glass and Steel Fiber on the Thermal Properties of Concrete

et al. 2021

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“…As they reported, the density increased by 1.58%, 3.15%, and 4.73% due to the use of 20%, 40%, and 60% FNSWA. On the other hand, the opposite trend was reported by Bouasria et al [ 49 ]. They, however, replaced not the aggregate but the cement with ferronickel slag, and noted a decrease in concrete density from 2390 to 2330 kg/m 3 after a 10% substitution.…”

Section: Resultsmentioning

confidence: 60%

An Experimental Study of Possible Post-War Ferronickel Slag Waste Disposal in Szklary (Lower Silesian, Poland) as Partial Aggregate Substitute in Concrete: Characterization of Physical, Mechanical, and Thermal Properties

et al. 2021

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Aggregates derived from waste, due to the growing awareness of global warming, are more and more often used in the concrete production process. This way, their disposal not only reduces the pollution of the Earth but also lowers the consumption of natural aggregates, which are limited. One of the new “eco” aggregates may be a ferronickel slag waste (FNSW), which was generated in post-war metallurgical processes and stored in Szklary (Lower Silesian, Poland). In order to determine the possibility of using ferronickel slag waste aggregate (FNSWA) in the concrete production process, new concrete mixtures were designed and tested. Physical properties (cone slump, air content, pH, and density), mechanical properties (compressive strength, flexural strength, and tensile strength), and thermal properties (thermal conductivity) were assessed for all new laboratory recipes. Moreover, the modulus of elasticity and Poisson’s ratio were determined. This study includes five different contents of FNSWA in the amount of 5%, 10%, 15%, 20%, and 25% of the mass of natural aggregate as its partial substitute. The final results were compared to the base sample (BS) containing 100% natural aggregate, which was granite.

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“…Dredging is performed to reduce density, but this may aggravate the problem through provision of additional habitat. The shells are used to supplement building materials [ 115 ]. It is not possible to conclude that native bivalve populations have been only negatively affected and driven out by the slipper limpet as most were in decline in many areas due to other problems, including invasive drill predation on oyster spat and Tributyltin (TBT) contamination from antifouling paint applied to boats and other structures.…”

Section: Ecosystem Adaptation and Non-native Species In The Urban Thamesmentioning

confidence: 99%

The Urban River Syndrome: Achieving Sustainability Against a Backdrop of Accelerating Change

Richardson

Soloviev

2021

IJERPH

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Human activities have been affecting rivers and other natural systems for millennia. Anthropogenic changes to rivers over the last few centuries led to the accelerating state of decline of coastal and estuarine regions globally. Urban rivers are parts of larger catchment ecosystems, which in turn form parts of wider nested, interconnected systems. Accurate modelling of urban rivers may not be possible because of the complex multisystem interactions operating concurrently and over different spatial and temporal scales. This paper overviews urban river syndrome, the accelerating deterioration of urban river ecology, and outlines growing conservation challenges of river restoration projects. This paper also reviews the river Thames, which is a typical urban river that suffers from growing anthropogenic effects and thus represents all urban rivers of similar type. A particular emphasis is made on ecosystem adaptation, widespread extinctions and the proliferation of non-native species in the urban Thames. This research emphasizes the need for a holistic systems approach to urban river restoration.

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Partial substitution of cement by the association of Ferronickel slags and Crepidula fornicata shells

Cited by 20 publications

References 52 publications

Influence of Polypropylene, Glass and Steel Fiber on the Thermal Properties of Concrete

Influence of Polypropylene, Glass and Steel Fiber on the Thermal Properties of Concrete

An Experimental Study of Possible Post-War Ferronickel Slag Waste Disposal in Szklary (Lower Silesian, Poland) as Partial Aggregate Substitute in Concrete: Characterization of Physical, Mechanical, and Thermal Properties

The Urban River Syndrome: Achieving Sustainability Against a Backdrop of Accelerating Change

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