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Recycled sand from sandstone waste: A new source of high
2022年4月1日· Itshowed that the Ssand produced from sandstone byproduct can be used as highquality fine aggregate This research highlights that the application of Ssand as2022年4月9日· Seven midpoint environmental impact (EI) categories of ReCePe method, ie global warming potential, humantoxicity potential, particulate matter formationComparative Environmental Impacts of Recycled Concrete
Investigation of the strength of concretelike material with waste
2022年9月23日· The waste rock acts as a skeleton in the mixed aggregate and the aeolian sand acts as a gap filler The waste rock and aeolian sand gradually change from loose structure to embedded structure, so that the packing density of mixed aggregates increases2020年10月1日· However, waste glass as a fine aggregate has an increasingly adverse effect on the mechanical properties as the replacement of sand increases over 20% In terms of fresh properties, due to the lower specific gravity of glass compared to natural sand, samples made incorporating waste glass has a lower slump densityRecycling of waste glass as aggregate in cementbased materials
Novel separation process for obtaining recycled cement
2021年8月1日· Sand represents a substantial fraction of concrete mixtures (approx 25–35%), further contributing to the increasing scarcity of this natural resource (UNEP, 2019) In Europe, over 1 billion tonnes of sand are produced, being about 1/3 of the total amount of aggregate consumption (UEPG, 2020)2021年4月21日· Paving block is a widely used pavement material due to its long service life, fast and easy production and easily replaced for maintenance purpose The huge production volume of paving blocks consumes large amount of natural aggregates such as sand and granite Therefore, there is a necessity to review the utilization of alternativeAn overview on the properties of ecofriendly concrete Springer
Construction and demolition waste as recycled aggregate for
2021年9月10日· Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new ecofriendly concrete Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively The results revealed2022年10月8日· This research elucidates the idea of ecofriendly concrete and highlights the benefits attainable from its effective practice towards sustainable construction materials The design mix employed a water/cement ratio of 05, a concrete mix ratio of 1:2:4, varying percentages of 25 mm seashells, 475 mm river sand as fine aggregates, and granite 20Effective Economic Combination of Waste Seashell and River Sand
Engineering properties of concrete incorporating waste glass as
2023年5月25日· Disposal of waste material is causing environmental issues all around the world Waste glass and tin can are two such products that impose detrimental effects on the environment One feasible approach is to utilize these discarded materials as constituents of concrete This study investigates the performance of concrete prepared with glass waste2022年4月1日· The construction industry is facing a shortage issue of river sand, therefore broadening new sources of fine aggregate is imminent This paper demonstrates the feasibility of a recycled sand from sandstone waste in mortar manufacturing by comprehensive assessment of workability, mechanical properties, water absorption,Recycled sand from sandstone waste: A new source of high
Properties of Concrete with Recycled Concrete Aggregate
2020年3月22日· Concrete containing metallurgical sludge waste as 30% sand replacement reached 20 mm slump and the one containing 60% of metallurgical sludge waste as a sand replacement 10 mm An attempt was made to improve the consistency of the latter with a superplasticizer After the addition of a 155% admixture by cement’s mass, the slump2022年3月3日· The waste materials used as aggregate replacement in the SMA mixes include recycled asphalt pavement, recycled concrete, steel slag, palm oil clinker, waste ceramic, shredded waste plastic, and crumb rubber and were categorized based on their sources The waste materials were used as fine aggregate or coarse aggregateA systematic review of the utilization of waste materials as aggregate
Sand And Aggregate: Diminishing Natural Resources And
Sand and aggregate are two of the most commonly used natural resources in modern society to maintain the existing infrastructure and provide for future construction After air and water, sand is the natural resource most used by human beings (Beiser) About 70 percent of the world’s sand is quartz formed by weathering and erosion2021年3月9日· The aim of this paper is to use the foundry sand (FS) and waste foundry sand (2014) Effects of foundry sand as a fine aggregate in concrete production Constr Build Mater 70:514–521 Article Google Scholar Ganesh Prabhu G, Hyun JH, Kim YY (2014) Effects of foundry sand as a fine aggregate in concrete productionInvestigating the effect of the foundry sand and waste foundry sand
Alternative fine aggregates in production of sustainable
2020年9月20日· These alternative fine aggregate (AFA)/manufactured sand (MS) are generally produced from natural sources or any other sources like old concrete, rocks, industrial wastes after processing using thermal, mechanical and chemical separation, washing, crushing and scrubbing (Dash et al, 2016)2022年12月28日· In this work, the feasibility of partially and totally replacing natural sand with used foundry sand in selfcompacting concrete was studied Natural sand was replaced in 50% and 100% vol by used foundry sand The fresh state properties parameters analyzed in this study were slump flow, t500, Vfunnel, Japanese ring and LboxInfluence of Partial and Total Replacement of Used Foundry Sand
XRD Analysis of Natural sand, Quarry dust, waste plastic (ldpe) to
2018年1月1日· XRD Analysis of Natural sand, Quarry dust, waste plastic (ldpe) to be used as a fine aggregate in concrete Author links open overlay panel BV Bahoria a, DK to be used as a fine aggregate in concrete BVBahoriaa,DKParbatb,PBNagarnaik a,b,* aAssistant Professor,RGCER,Nagpur,India utilization of such materials in2022年7月30日· 1 Introduction Concrete is the second most used material by volume on Earth Portland cement is the main binder of concrete, and its production (estimated at 43 bi ton/year) accounts for about 8% of the global CO 2 emission []Besides the CO 2 emission released by cement production, large amounts of sand and gravel are extracted to serveRecycled Aggregate: A Viable Solution for Sustainable Concrete
Sustainable use of industrialwaste as partial replacement of
2016年12月1日· It can be observed from the above details and Figure 2, Figure 3, Figure 4, Figure 5 that the particle size distribution of all industrial wastes including palm oil clinker fine aggregate is within the ZoneI and ZoneII except foundry sand and steel slag The steel slag does neither meet ASTM C 33 (1999) nor BS 882 (1992) grading limits (Qasrawi etUsing waste plastics as a partial natural aggregate replacement and monitoring strength and workability reduction in pavement structures is vital to netcarbon zero This study explores the utilisation of waste plastic as a fine aggregate replacement in mediumstrength reinforced concrete pavements, for improving plastic aggregate performance and theFull article: Effects of waste plastics as partial fineaggregate
Alternative fine aggregates in production of sustainable concrete
2020年9月20日· The increase in urbanization and industrialization leads depletion of natural resources (Mehta and Meryman, 2009; Nanthagopalan and Santhanam, 2010; Behera et al, 2014)A developing country like India suffers evidently from environmental imbalance and CO 2 emissions (Singh et al, 2018)The good quality materials, especially river sand is2021年3月1日· Nevertheless, there is limited study on the use of industrial waste as replacement of fine aggregate in normal strength concrete especially, using alum sludge from water treatment plant as replacement of fine aggregate The material used in this study as replacement of fine aggregate (river sand) was ovendried alum sludgeEffects of different industrial waste materials as partial