Study of the mechanical behavior and durability of mortars based on acitvated sand

AMMAR, Noui; Bouglada, Mohammed Salah; Belagraa, Larbi; Achour, Yacine; Bouzid, Abderrazak

doi:10.37190/msc202704

Cited by 6 publications

(3 citation statements)

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“…This highlighted the positive contribution of incorporation of additions into the sand due to its physical infill effect and chemical effect due to the chemical reactivity of additions [22]. In addition, these results are consistent with a similar recent study [23] that has been conducted on the incorporation of active additions such as slag and pozzolana into the particle size skeleton of sand (active sand) for mortar and which has proven the effect of additions in improving the compressive strength of the mortar. The benefits of using industrial waste to replace natural sand and cement in lightweight concrete are also discussed.…”

Section: Compressive Strengthsupporting

confidence: 92%

Optimization of Cellular Concrete Formulation with Aluminum Waste and Mineral Additions

2021

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The paper aims to study cellular concrete with a new approach of formulation without an autoclave, with the use of aluminum waste and incorporation of mineral additions into the sand and evaluate its physical and mechanical properties. In this experimental study, two types of cellular concrete are prepared, based on crushed and dune sand with the incorporation of 15% of the slag and 10% of pozzolana, as sand replacement. An experimental program was performed to determine the compressive strength at 28 days, the density and thermal conductivity of the confected cellular concrete. The obtained results showed that concretes prepared with crushed sand developed better mechanical resistance compared to the dune sand. It is also noted that the concretes containing the mineral additions provide a substantial increase in compressive strength in particular slag. Furthermore, cellular concretes with sand dunes offer better thermal conductivity, compared to those with crushed sand. The use of the additions reduces the Water/Binder (W/B) ratio and leads to a lower thermal conductivity regardless of the used sand nature. The outcome of the present study here in could present a modest contribution for the production of cellular concrete with local materials in particular dune sand, active mineral addition and aluminum waste. The physical and mechanical properties obtained from this new composition are estimated acceptable compared to those of the industry-prepared cellular concrete product. Doi: 10.28991/cej-2021-03091721 Full Text: PDF

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Section: Compressive Strengthsupporting

confidence: 92%

Optimization of Cellular Concrete Formulation with Aluminum Waste and Mineral Additions

2021

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“…Contemporary research is focused on concrete modifications [21,22], forming of the man-made ground embankments [23] and even evolutionary game theory study for construction and demolition waste recycling [24]. The main way to ensure the sustainable development of the mining region is to use mineral deposit development systems with a hardening backfill and to include man-made waste in a closed production cycle [25,26]. In addition to solving the issue of safe mining operations [8], the use of geotechnology with a backfill helps to improve the completeness and quality of deposit extraction (presented in further sections), protects the hydrogeological regime and reduces the degree of crack development in the mined-out mass.…”

Section: Industrial Waste In the Laying Composite-a Methods For Their Disposalmentioning

confidence: 99%

Creation of Backfill Materials Based on Industrial Waste

et al. 2021

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The possibility of replacing the traditional components of the filling mass with man-made waste and the need for the use of mechanical activation of the components of the filling composite in order to improve its rheological characteristics and the strength of the mass after solidification are proved. The demand for resource-reproducing technologies that allow the most complete use of the industrial mineral resource potential of the mining and processing enterprise, which will lead to a multiplicative ecological and economic effect, is confirmed. It is necessary to introduce the re-processing of man-made waste in order to further extract the useful component to a level that meets the standards of environmental safety and economic feasibility, which would create conditions for the actual sustainable development and give some perspectives for extending the operating time of mining regions. It is established that the sustainable development of the mining and processing region is impossible without a highly efficient exploitation of natural deposits and man-made georesources in combination with an integrated approach to the development of subsurface resources.

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“…All these measures make it possible to reduce the conditional threshold of natural and man-made georesources involved in the development, to obtain an additional marketable product, and to dispose of man-made waste after deep processing [42][43][44]. In total, this will increase the financial efficiency of a mining [45][46][47] and processing enterprise [23,24,33,[48][49][50] and ensure high environmental safety. Even after introducing all these measures, we will still be far from circular economy and closed-loop that still seem to be a wishful thinking in the case of mineral processing.…”

Section: Comprehensive Utilization Of Georesources Through the Prism Of Environmental Safetymentioning

confidence: 99%

Renewable-Resource Technologies in Mining and Metallurgical Enterprises Providing Environmental Safety

et al. 2021

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The article addresses the issue of mining and industrial waste stored in tailings and heaps in mining areas, and it explores the existing, as well as new, ways of reducing its harmful impact on the environment. On the basis of the Russian experience in mining industry in Ural, it presents a process which makes it possible to eliminate the amassed hazardous waste, retrieve the valuable material (metals) stored in it, and use the remaining waste as backfill in order to both: store it underground (and not on the surface) and prevent the disasters caused by the collapse of the abandoned shafts, thus prolonging the functioning of the mining areas. The process includes preliminary activation treatment of materials found in industrial waste in a disintegrator to protect the environment from toxic pollution. The promising results of the experiment have been discussed, taking into account the complexities of economic evaluation of the idea.

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Study of the mechanical behavior and durability of mortars based on acitvated sand

Cited by 6 publications

References 0 publications

Optimization of Cellular Concrete Formulation with Aluminum Waste and Mineral Additions

Optimization of Cellular Concrete Formulation with Aluminum Waste and Mineral Additions

Creation of Backfill Materials Based on Industrial Waste

Renewable-Resource Technologies in Mining and Metallurgical Enterprises Providing Environmental Safety

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