Elaboration of recycled concrete sand aggregates-based

2023.9.22  At 28 days of water curing, the gains in compressive strengths reached 11% for (RCSA50) mortars and 35% for (RCSA100) ones. Thus, the related values

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(PDF) Sand Replacement by Fine Recycled Concrete

2020.1.1  In circular concrete design, beside cement replacement with more environmentally friendly cement types, there is also an urgent need for sand replacement

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Recycled Sand and Aggregates for Structural Concrete:

2024.1.17  The production of high-quality recycled aggregates and sand can facilitate complete concrete recycling and hence significantly contribute to virgin materials

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Production of recycled sand from construction and demolition waste

2013.3.1  This paper presents a technology that permits the production of high quality recycled sand. The selective removal with a vertical impact crusher of the cement paste

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Complete re-utilization of waste concretes ... - ScienceDirect

2022.2.1  Initially recycling of waste concrete has focused on producing quality coarse recycled concrete aggregate (CRCA). Now, fine fractions are becoming of major

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Comparative Environmental Impacts of Recycled Concrete

2022.4.9  Recycled concrete aggregates (RCA) manufactured from CDW can replace a significant portion of natural aggregates in concrete as per various research studies

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Valorisation of recycled concrete sands in cement raw meal for cement ...

2017.1.21  3.1 Chemical analysis. The chemical compositions of the recycled concrete sands and the cement raw meal components are given in Table 1.The major components

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The Potential of Replacing Concrete with Sand

2023.6.15  Research has indicated the potential for recycled plastics to be used as concrete substitutes. This study extends existing research by investigating the use of polycarbonate (PC) in plastic sand bricks as a

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Optimising concrete with recycled sand,

2020.8.12  In its appraisal, concrete produced from recycled sand and aggregates is unfairly pitted against higher strength concrete produced using virgin aggregates, such as granite or basalt, and natural sand.

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The Potential of Replacing Concrete with Sand

2023.6.15  Concrete contributes 8% of all global carbon emissions, making the need to find substitutes critical for environmental sustainability. Research has indicated the potential for recycled plastics to be used as

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Valorization of Dredged Sediments and Recycled

2023.2.28  The quartz and calcite originate from recycled concrete silica sand and portlandite carbonation, respectively. The results do not suggest the presence of portlandite, which is a strong indication of RCA

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Recycled Sand and Aggregates for Structural Concrete:

2024.1.17  Concrete recycling to produce aggregates is crucial in reducing the demand for virgin materials in the construction industry, particularly for the most widely used building material—concrete. A potential solution to enhance the quality of recycled aggregates involves the removal of the adhered cement paste from their surfaces. In this

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Crystals Free Full-Text A Step towards Sustainable Concrete

2022.7.5  Cement, sand, coarse aggregate, water, and admixtures are used to make concrete. After water, concrete is the second most used material in the building construction [1,2,3].The quality of aggregates, which make up 65–80 percent of the total quantity of concrete, have a significant impact on concrete strength [].By the end of 2025, the global

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Kenyan startup founder Nzambi Matee recycles plastic to make

2021.2.12  Nairobi-based startup company Gjenge Makers, founded by Nzambi Matee, has created a lightweight and low-cost building material that is made of recycled plastic with sand to make bricks that are stronger than concrete material. Nzambi Matee, a 29-year-old trained engineer and schooled in biochemistry, founded the new ways of

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Study of the influence of seawater and sea sand on the

2021.10.1  Aiming at the problems of marine infrastructure facing corrosion and complex load environments, a seawater and sea sand concrete-filled CFRP- steel composite tube (SFSCT) column structure was proposed: CFRP sheets are pasted on the inner and outer walls of the steel tube to provide corrosion resistance and improve yield capacity,

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Frontiers Sustainable usage of demolished concrete waste

2023.1.26  Recycled concrete aggregate, waste rock, crushed stone aggregate, reclaimed asphalt pavement, crushed clay brick, fine recycled glass, and gravel are some of the things that are left behind when concrete buildings are torn down. These things are a big problem for many countries around the world. More and more people want to find smart

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Decision Analysis for the Influence of Incorporating

2022.11.1  Due to the increasing of the environmental awareness related to potentially harmful effects, and the increasing of the industrial by-product’s costs of landfills, the recycling of industrial wastes has become a genius alternative to disposal (Munir et al., 2017).Several studies were conducted on the incorporation of by-products in making

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Utilization of recycled concrete residues as secondary

2023.4.7  The feasibility of using recycled concrete in making a new mix by exploring the partial to full replacement of primary materials in varying proportions has been presented. ... Sand, Aggregates, Recycled cement, Recycled fine aggregates and Recycled Coarse aggregates. The water Cement ratio in all the mixes was kept as 0.5. Table 4.

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A Review on the Usage of Recycled Sand in the Construction Industry ...

2020.6.22  The construction industry requires natural sand for many applications. The recycled sand obtained from industrial operations can also be utilized in construction activities. Many industries generate waste sand as a byproduct. The material generated from this discarded molds and cores is usually known as “used foundry sand,” “waste foundry

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(PDF) Using Plastic Sand as a Construction Material

2022.5.25  posites. ratios of LDPE plastic to sand at 200 °C. The samples with a 1:3 plastic to sand ratio and 3. mm sand grains were found to 32.7. Mpa (see Figure 4). The samples with a 1:7 p lastic to ...

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The Production of Sustainable Concrete with the

2020.9.24  The use of recycled PET bottle fibres increases compression and tensile strength of concrete composites and reduces the quantity of sand needed . Even polyethylene terephthalate is a suitable

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Developing Plastic Sand Bricks Used in

(2020) Recycling waste plastic bags as a replacement for cement in production of building bricks and concrete blocks. Journal of Waste Resources and Recycling , 1 , p. 202. Abas, N F Taiwo, O O (2020)

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Is It Possible to Recycle Concrete? ArchDaily

2020.2.17  In fact, studies carried out in Switzerland have shown that the use of recycled aggregates might save abiotic raw materials (gravel sand), but can increase energy consumption and greenhouse gas ...

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Sustainability Free Full-Text Mixture Optimization of Concrete ...

2022.1.1  Most of the waste materials recycled for the production of new construction materials are by-products of various manufacturing processes, such as the aggregate washing process. Recycling such materials is of paramount importance since it could reduce the adverse environmental impacts resulting from landfilling. Various studies have

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Frontiers Experimental Study on Mechanical Performance of Recycled ...

2021.11.24  Compressive Strength. The compressive strength of all 3 stages of samples is presented in Figure 5.The compressive strength of the control sample was 53 MPa at 28 days of curing and when 100% of natural sand was substituted with recycled fine aggregate, the compressive strength was reduced by 25%, see Figure 5.The

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New Mix Design Method for Recycled Concrete Using Mixed Source Concrete ...

2020.5.2  Abstract This study proposes a new mix design method for C30 recycled concrete using recycled aggregate crushed from different strength source concrete (SC). The dosages of cement, water, sand, and coarse recycled concrete aggregate (CRCA) are the same as the corresponding components in natural concrete, but the CRCA should be

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Scientists use coffee waste to make concrete 30% stronger

2023.8.24  Engineers at RMIT in Australia have conceived of a new technique that makes concrete 30 percent stronger simply by adding biochar made out of used coffee grounds. The process also finds a useful ...

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(PDF) Study of Using of Recycled Brick Waste (RBW) to

2021.11.1  Recently, a growing number of studies have been conducted on using recycling brick waste (RBW) to produce environmentally friendly concrete. The use of brick waste (BW) as potential partial cement ...

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How to make low-carbon concrete from old cement - The

2023.4.26  T he world gets a little greyer every year. According to a paper published in 2014 concrete—an aggregate material made by mixing cement, sand and gravel—is the second-most consumed substance ...

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Carbon Emission Evaluation of Recycled Fine Aggregate

2022.11.3  Without considering the carbonation effect of concrete, the increment of 20% in the recycled aggregate replacement will reduce carbon emissions by 4.66 kg-CO2eq/t, and the carbon emission reduction will reach 5.58% when the natural fine aggregate is completely. Sustainability. replaced.

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High quality recycled sand from mixed CDW – is that possible?

2021.5.1  The density of the recycled sand (mass/total volume of particles) is 2.71 ± 0.005 g/cm 3; this value is in accordance with the sample mineral composition, essentially quartz, feldspar, limestone, and mica. The porosity by mercury intrusion is 8.55 ± 0.90% and the water absorption of the obtained sand is 4.61 ± 0.34%.

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Development of sand-plastic composites as floor tiles using silica sand ...

2022.11.7  Liang et al., experiments for the development of eco-friendly tiles by utilizing waste plastics and sand showed that adding sand enhances its strength, thus making it more durable to withstand the ...

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Using Plastic Sand as a Construction Material toward a

2022.5.25  The greatest compressive strength of a sand and plastic mixture was predicted through graph analysis to be 4.95 MPa. The result was achieved with a plastic weight percentage of 60% (40% LDPE and 20% HDPE). The plastic was melted and blended with sand at a weight percentage of 40% (25% 1.18 mm sand and 15% 0.5 mm

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Using Recycled Concrete Powder, Waste Glass Powder, and

2022.3.26  The environment receives millions of tons of garbage, including plastic and glass, and concrete building debris contributes to a number of environmental problems. In order to reduce cement and make use of waste materials like glass and plastic, this research creates compacted concrete samples using waste glass powder, waste plastic powder,

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Wood waste makes recycled concrete stronger than ever

2020.2.21  Production of cement is a big source of CO2 emissions, so the more we can recycle existing concrete, the better. That's where a new study comes in, which indicates that discarded concrete becomes ...

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An Investigation of Mechanical Properties of Concrete by Applying Sand ...

2022.3.30  Plastic wastes are a major hazard for the environment and their use in the construction industry is increasing day by day. The major drawback of the use of plastic in concrete is an exceptional reduction in strength and workability. This research work explores the effect of sand coating on two types of recycled plastic aggregates, high-density

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(PDF) Development of Paver Block Containing Recycled Plastic

2021.5.1  There were two ratios of cement, sand and soil used in the design mix namely mixture A and mixture B. The plastic content used in each mix were 0%, 5%, 10%, 15%, 20%, 25% and 30% by weight of sand.

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Reuse of Clay Brick Waste in Mortar and Concrete - Hindawi

2020.4.18  The application of recycled clay brick can not only solve the disposal problem of demolished solid waste but also reduce ecological environment damage caused by the excessive development of resources. Clay brick powder (CBP) exhibits pozzolanic activity and can be used as cement replacement. Recycled clay brick aggregate (RBA)

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À propos de LIL

Henan LIL Science & Technology Co.,Ltd. est une entreprise d'actions communes qui produit de grands et moyens broyeurs et moulins façonnant la recherche et développement, la production et la vente en un système intégral. Les sièges sociaux situés dans la zone de développement d'industrie DE POINTE à Zhengzhou, couvrant au-dessus de 30 mille mètres carrés comprenant plusieurs filiales. Depuis établi en 1987, la compagnie avait pris la méthode de gestion scientifique de l'entreprise moderne, avait produit avec le soin méticuleux et la création directe et s'était développée pour devenir une perle et un stimulateur lumineux de l'industrie mécanique dans notre pays.

 

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