coarse recycled aggregate ppt
Incorporating coarse and fine recycled aggregates into
2023.11.6 Incorporating coarse and fine recycled aggregates into concrete mixes: mechanical characterization and environmental impact REGIONAL CASE STUDY Open
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Self-compacting concrete with recycled coarse
2023.3.17 Highlights • Research gaps on influence of Recycled Coarse Aggregate on Self-Compacting Concrete were highlighted. • Crushed precast elements from concrete
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(PDF) Concrete using recycled aggregates
2017.9.1 The recycled aggregates obtained from waste concrete are more angular and have higher absorption and specific gravity than
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Recycled aggregates from construction and demolition
2022.4.1 In this study, an effort has been made to develop a low-carbon recycled aggregate concrete by utilizing 100% carbonation treated recycled coarse concrete
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Characterization of Recycled Coarse Aggregate (RCA) via a
2014.5.20 polycarboxylate (PC) dispersant. coated RCA (CRCA) water reduction ratio. workability. Recycled coarse aggregate (RCA) made from waste concrete is not a
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(PDF) Recycled concrete aggregates and their influence on
2023.2.1 Abstract and Figures. This monograph addresses the use of recycled concrete aggregates (RCA) as a replacement for natural aggregates (NA) in concrete
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Enhancing the quality of recycled coarse aggregates by
2021.9.15 The adherence of mortar on the surface of RCA affects the mechanical and durability properties of the recycled aggregate concrete (RAC) (Abdulla 2014, Dhir
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CIVIL PROJECT PPT RECYCLED AGGREGATE
This paper reports the basic properties of recycled fine aggregate and recycled coarse aggregate also compares these properties with natural aggregates. Basic changes in all aggregate properties are determined
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Recycling of Concrete Recycling Coarse Aggregate - IJERT
2022.3.7 Recycled aggregates are a way of reusing materials by keeping them from being disposed into landfills [1]. Recycling of concrete is a simple process. It involves
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Materials Free Full-Text Recycled Aggregate: A Viable
2022.7.30 Construction and demolition activities consume large amounts of natural resources, generating 4.5 bi tons of solid waste/year, called construction and demolition waste (CDW) and other wastes, such as ceramic, polyethylene terephthalate (PET), glass, and slag. Furthermore, around 32 bi tons of natural aggregate (NA) are extracted
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Self-compacting concrete with recycled coarse
2023.3.17 To sum up, recycling coarse aggregate is a complicated process and its influence on concrete differs depending on the research. Therefore, percentage of replacement of NA with RCA should be supported by the fulfilment of the assumed concrete strength requirements. It is also possible to use the waste for concrete secondary
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AI-Assisted optimisation of green concrete mixes incorporating recycled ...
2023.8.8 To tackle this shortcoming, incorporating SCMs into recycled aggregate concrete (RAC) has been extensively explored [21], ... Mechanical properties of concrete with recycled coarse aggregate. Build. Environ., 42 (2007), pp. 407-415, 10.1016/j.buildenv.2005.07.033. View PDF View article View in Scopus Google Scholar [69]
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混凝土制备低碳化演进与展望-《建筑科学与工程学报》 - chd ...
摘要: 混凝土制备低碳化是建筑领域实现“双碳目标”的重要环节。. 从混凝土原材料入手,综述了复合水泥、地聚合物、再生骨料的碳减排效益及潜力; 明晰了不同低碳原材料对混凝土碳排放与强度的影响规律,在碳排放-强度联合目标下,提出了低碳混凝土的简化 ...
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Recycling of Concrete Recycling Coarse Aggregate - IJERT
2022.3.7 Recycling of concrete is a simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. As per study about 75 to 80% of total construction material consist coarse aggregate portion. When the structure is demolished, the waste concrete in a large quantity is produced.
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SELF-COMPACTING CONCRETE USING RECYCLED COARSE AGGREGATE PPT
2020.9.21 Coarse recycled concrete aggregates, Fine recycled concrete aggregates, Silica fume. A better strength, frugal, along with workability and durability of SCC can be achieved by adding 70% FA and 70% S in concrete as partial substitution of OPC. The compressive split tensile strength of SCC specimen gets reduced.
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Recycling Free Full-Text A State-of-the-Art Review on the
2022.7.27 Geopolymer concrete (GC) has the potential to incorporate recycled concrete aggregates (RCA) obtained from construction and demolition waste. This research aims to review the current state-of-the-art knowledge of the RCA in GC and identify the existing knowledge gaps for future research direction. This paper highlights the essential
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Geopolymer concrete incorporating recycled aggregates: A
2022.3.1 The MOE of GC decreased gradually due to the use of recycled coarse aggregate. (Al Mamun and Islam, 2017) 0, 20, 40, 60, 80, and 100%: The MOE of geopolymer recycled aggregate concrete moderately enhanced and then decreased as the curing temperature was enhanced. (Ganesh and Muthukannan, 2019) 0, 20, 50, and 100%
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Multi-criteria optimization of recycled aggregate concrete
2020.12.10 The mechanical, environmental and economic aspects of RAC were integrated to evaluate the most sustainable concrete, which may be appropriate for varied concrete applications. 25 mixes were prepared by replacing natural coarse aggregate with recycled concrete aggregate (RCA) at mass ratios of 0%, 25%, 50%, 75% and 100%, to
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Self-compacting concrete with recycled concrete aggregate:
2017.12.30 A concrete mix, named R25, was obtained substituting 25 vol% of natural aggregates (coarse and fine) with recycled aggregates.R25 contains 45 vol% of N0-6, 30 vol% of N6-16, 12 vol% of R0-4, 5 vol% of R4-8 and 8 vol% of R8-16.. Two different mixes were obtained substituting 40 vol% of natural aggregates.In the mix named R40 both
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Evaluation of Surface-Coated Recycled Coarse Aggregate in
2023.11.21 Recycled Coarse Aggregate (RCA) The RA was sourced from a wrecked residential structure in Chennai's West Mambalam. The aggregate obtained had a specific gravity value of 2.78 and was crushed to the necessary particle size of 10–20 mm. RA is created by crushing and sorting construction waste, such as concrete, brick, and asphalt,
More建筑结构用再生混凝土水平受力构件研究进展
2017.6.5 建筑结构水平构件混凝土用量较大，且对混凝土力学性能要求相对不高，更适合再生混凝土的结构化应用。本文总结分析了国内外学者及笔者所在课题组近.来在再生混凝土材料性能、钢-再生混凝土黏结性能以及钢筋再生混凝土板、梁和钢-再生混凝土组合板、组合梁等水平受力构件力学性能方面的 ...
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Aggregates ppt PPT - SlideShare
2013.4.28 Aggregates ppt - Download as a PDF or view online for free. Aggregates ppt - Download as a PDF or view online for free. Submit. Upload. Aggregates ppt. ... 14 It is an excellent coarse
MoreLife cycle assessment of sustainable concrete with recycled aggregate ...
2023.6.1 Section snippets Sustainable concrete with RA and SCMs. A review of current relevant literature reveals that concrete incorporating RA and SCMs are frequently explored in both academia and industry, with visible and cost-effective benefits to the technical, environmental, and economic behavior of the industry (Illankoon et al., 2018,
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Incorporating coarse and fine recycled aggregates into
2023.11.6 Materials and reagents. The application of recycled concrete aggregates (RCA) serves as a widely embraced method on behalf of repurposing concrete waste, aligning well with the principles of sustainable development [].The primary objective of the experimental program is to assess the feasibility of substituting coarse and fine natural
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Characterization of Recycled Coarse Aggregate (RCA) via a
2014.5.20 Recycled coarse aggregate (RCA) made from waste concrete is not a suitable structural material as it has high absorption of cement mortar, which adheres on the aggregate surface and on the tiny cracks thereon. Therefore, when using RCA made from waste concrete, much water must be added with the concrete, and slump loss occurs
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recycled aggregate concrete PPT - SlideShare
2019.9.17 It is called recycled aggregate which can be produced by concrete Crusher. The aggregates are categorized by size as coarse and fine aggregate. The characteristic of recycled aggregates could be different by its parent concrete because the parent concrete was designed for its purposes such as permeable, durable and high
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Durability assessment of recycled aggregate in concrete
2022.1.1 Still, on glass, Mardani-Aghabaglou et al. (2019) showed that using a RFA in combination with recycled glass as coarse aggregate replacement, RAC would also have heightened F–T resistance. Work conducted by Lei et al. (2018) indicated that with a coupling testing protocol and F–T circles in salt solutions for RAC, there is a proper ...
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Aggregate - Concrete Technology PPT - SlideShare
2016.3.19 Aggregate - Concrete Technology. Mar 19, 2016 •. 181 likes • 13,008 views. David Grubba. Engineering. Lesson: Concrete Technology - Building Materials The quality of aggregate affect the durability and strength of concrete. Since about 3/4 of the volume of concrete is occupied by aggregate.
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Recycling of geopolymer concrete - ScienceDirect
2015.12.30 The complete replacement of coarse natural aggregates with recycled geopolymer concrete aggregates was shown to result in only 12.9%, 10.7% and 15.2% reduction in the compressive strength, modulus of elasticity and modulus of rupture of recycled aggregate geopolymer concrete, respectively.
MoreSustainability Free Full-Text Using Recycled
2020.11.11 Whilst coarse recycled aggregates generated from construction and demolition waste are permitted by many specifications for various applications in road construction, a necessity exists for
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Recycled Concrete Aggregate - PowerPoint Presentation ...
The utilization of recycled aggregate is particularly very essential as major part of concrete is made of aggregates. Most of waste materials produced by demolished structures disposed off by dumping them as land fill. Dumping of wastes on land is causing shortage of dumping place in urban areas. Therefore, it is necessary to start recycling ...
MoreFull article: Flexural behavior of sustainable reinforced
2022.8.14 The recycled EVA was added in natural coarse aggregate replacement percentages of 0, 25, and 50% with or without similar percentage replacements of recycled concrete wastes. The results indicated reductions in density, compressive strength, splitting tensile strength, and flexural strength as the plastic waste percentage increased.
MoreInfluence of Recycled Plastic Incorporation as Coarse
2023.3.29 Plastic waste has increased significantly in recent years as a result of fast population growth and urbanization. Studies on the incorporation of plastic aggregates as a substitution for natural aggregates in concrete are needed to successfully reduce both adverse environmental impact and the depletion of natural resources. The objective of
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Experimental Investigation of Recycled Fine Aggregate from
2022.7.21 In this study, locally produced recycled fine aggregate from concrete demolition waste was investigated for potential replacement of sand in new concrete mixes. Tests for the waste material included visual examination, chemical composition, grain size distribution, specific gravity, and fineness modulus. Tests on the incorporated recycled
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Self-compacting concrete adopting recycled aggregates
2023.1.1 The most widely used is the aggregate prepared from construction-demolition waste, which can be called recycled concrete aggregate. Recycled aggregate of concrete is the aggregate obtained by dismantling the abandoned concrete in the garbage. The processed recycled aggregate can be divided into coarse recycled aggregate and
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Recyled aggregates (Concrete Technology and Building Materials) PPT
2014.1.10 Aggregates obtained from recycling of construction and demolition waste. Recycled aggregate are comprised of crushed, graded inorganic particles processed from the materials that have been used in the constructions. These materials are generally from buildings, roads, broken concrete, brickwork and masonry, bridges. 4.
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Recycled aggregate concrete PPT - SlideShare
2017.11.15 Recycled aggregate concrete - Download as a PDF or view online for free. ... Final year project ppt - The Future of Pavement Design. ... The results are tabulated under Table Cement 300kg/m3 Water 148.8 kg/m3 Fine aggregate 796kg Coarse aggregate 1173.462kg Water – Cement ratio 0.50 Fine aggregate to Cement ratio 2.65 Coarse
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(PDF) “Recycled Aggregate Concrete as Structural Material”
2007.1.6 To this aim, because of replacing 100% of fine and coarse aggregates with recycled coarse and fine aggregates, alkali-resistant glass fiber (AR-GF) (adding 1, 2, and 3%), and silica fume (SF ...
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REINFORCED CONCRETE WITH COCONUT SHELL AS COARSE AGGREGATES PPT
2017.8.29 AIMS OF THE PROJECTA • 1.To determine various alternatives available for coarse aggregate. • 2.To carryout a detail analysis on coconut shells as a coarse aggregate in concrete. • 3.To prepare a methodology for the project its analysis. • 4.To enlist advantages short comes of coconut shell as a coarse aggregate material. • 5.To ...
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