The construction industry is one of the biggest sectors of economic activity in the European Union, consuming more energy and natural resources than any other industrial activity. Additionally, construction and demolition (C&D) waste is the most common waste produced throughout the European Union. A more efficient and effective …
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Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon …
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Resource utilization of construction and demolition (C&D) waste has great potential to significantly reduce the consumption of natural resources and improve the environment. Meanwhile, establishing a sound policy system and reducing production are the key ways to solve the problem of C&D waste. Numerous studies on C&D waste, …
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The percentage of plastic waste recycled in 2015 was 16%. Estimations show that in 2021, the recycling rate will increase up to 25%. But if this production estimation turns out to be valid, a significant amount of plastic waste will still be left un recycled (Foti, 2019).Then, there is a necessity of increasing the recycling of plastic …
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The modification method and the replacement rate of recycled coarse aggregate (RCA) have a great influence on the properties of recycled aggregate concrete (RAC). This paper aims to study the properties of RAC changes with the replacement rate and analyze the modification mechanism. Composite impregnation treatment was …
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Learn how recycled concrete can be as durable and strong as fresh concrete, and sometimes stronger, from a UBC study. Find out how to recycle concrete onsite or at a plant, and the benefits for the …
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The International Conference on Emerging Trends in Engineering and Technology (IConETech-2020) Faculty of Engineering, The UWI, St. Augustine | June 1st – 5th, 2020 A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A SUSTAINABLE CONSTRUCTION MATERIAL Rekha Rampit1*, Jovanca Smith2 and Indrajit Ray3 1,2,3 …
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To offset the negative impacts of concrete while maintaining the engineering properties, raw material alternations such as using recycled aggregate ... However, such an approach is necessary in order to ascertain the benefits of utilizing recycled materials in concrete, particularly since incorporating RA and SCMs has been regarded as a ...
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The benefits of recycling concrete. Garden terrace made from an old concrete basketball court. Recycling concrete and similar materials saves money—especially when done on site with portable crushers. It also reduces emissions from transporting them to landfills—especially considering that many cities now must …
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Incorporating recycled plastic waste in concrete manufacturing is one of the most ecologically and economically sustainable solutions for the rapid trends of annual plastic disposal and natural resource depletion worldwide. This paper comprehensively reviews the literature on engineering performance of recycled high-density …
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Based on the basic principle of value engineering, the economic benefits of recycled concrete in practical engineering construction were evaluated. Value engineering analysis is a kind of quantitative analysis method which compares the functions of products with the costs needed, as shown in Equation (2) ( Huang et al., …
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Using recycled materials is one of the best ways to do this. Each material plays its part in creating attractive, sturdy bridges, highways, and other structures. Here are four examples of recycled materials used in civil engineering projects: Recycled Asphalt Pavement (RAP) Concrete; Bridge Steel; Recycled Plastics
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Recycled concrete means that you crush or pulverize the demolished concrete structure or structural elements and reuse the crushed concrete for future concrete construction works. …
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The environmental benefits of multi-recycling of concrete need to be better understood, and an investigation into establishing an economic model to sustain this …
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Carbon footprint is one of the most widely used tools for assessing the environmental impacts of the production and utilization of concrete as well as of the components derived from it, representing the …
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2.2 Mixing Method. Particle Packing Density (PPD) is a critical tool in concrete mix design, enabling engineers and researchers to develop sustainable and high-performance concrete mixes tailored for specific applications and project specifications (Panghal and Kumar 2023a, b, 2024a).This process involves the careful selection of …
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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 4.3 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 …
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This paper discusses the state-of-the-art of the fine recycled concrete aggregates (fRCA), focusing on their physical and chemical properties, engineering …
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Building construction requires important amounts of freshwater, thus depleting the already stressed natural water resources. This issue could be addressed by using recycled water in construction and in building systems. However, integrating greywater recycling systems is limited by complexity, costs, vulnerability to environmental …
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Journal of Building Engineering. ... but a dosage of 30 % LS is deemed optimal for balancing performance enhancements with environmental benefits of LS recycling. (3) Environmental benefits and ... Investigation of the physical mechanical properties and durability of sustainable ultra-high performance concrete with recycled …
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Recycled concrete can also be used to create 2"-4" recycled stone. This product is typically used for site stabilization, bottom layer road base, and backfill. Besides stone, recycled concrete can also be used to create …
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Environmental benefits of using recycled concrete aggregate (RCA) regarding a concrete pavement structure should be evaluated because standard specification for RCA as a raw material in RMC is not currently in place in many locations. This work aims to address environmental benefits of using RCA of concrete pavement …
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system makes sound economic, environmental, and engineering sense." ... Towards Sustainable Pavement Systems, recognizes the benefits of the use of recycling concrete pavements as a sustainable end-of-life pavement option. This document notes that, "Clearly, the economic and environmental costs of disposal are generally quite high, and ...
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The chemical and physical properties of RHA used in this study can be found in Table 1, Table 2, respectively.The specific gravity, median particle size and the total amount retained on 45-μm sieve were 2.03 g/cm 3, 19.41 μm, and 1.7%, respectively.Based on the X-ray diffraction (XRD) pattern in Fig. 1, the RHA contains a …
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How to Recycle Concrete? When recycling old concrete from a demolition, the most common procedure is the following: STEP 1: Large pieces of concrete are first crushed with special industrial equipment that uses jaws and large impactors. STEP 2: Once the concrete is broken drown, it is screened to remove any dirt or contaminating particles. …
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Municipal solid waste materials are elements that have direct contact with the environmental pollution; especially they have generated several greenhouse gas emissions which participate in the climate change globally [1].According to the statistics of World Bank on solid waste management, the most middle and low income countries …
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History. Recycled concrete aggregates or Crushed concrete aggregates has been in use since the ancient times, only to be integrated with gravel, sand, and cement to ensure durability. The practice was first recorded in the 1860s. US construction companies were reluctant to use the technique at first since crushing cured concrete …
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Properties of recycled concrete aggregate. Recycled concrete aggregate (RCA) is derived from crushed clean concrete debris, and is regarded as an alternative to using natural aggregate (NA) in concrete (Tam et al., 2018). Its relevant contents including physical properties, microscopic structural characteristics, and chemical composition, are ...
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Using recycled aggregates from construction and demolition waste can preserve natural aggregate resources, reduce demand of landfill, and contribute to sustainable built environment. This study provides a comprehensive review on recycled aggregate (RA) and recycled aggregate concrete (RAC) regarding their history, …
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Concrete waste recycling Benefits . ... Transactions of Civil Engineering. 2023 Feb, 47(1) ... Recycled concrete, when appropriately processed and mixed, can exhibit similar structural properties ...
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This review delves into a 's-eye view of the utilization of recycled solid wastes in road engineering, highlighting advances, benefits, challenges, and future prospects. Previous article in issue; Next ... Recycled aggregates can be produced from crushed concrete and crushed masonry which are the main materials found in …
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Department of Civil and Environmental Engineering, Lamar University, Beaumont, TX, USA. 2. ... Concrete waste recycling Benefits . In attention to sustainable and environmental development it is important to adopt the most protected methods of construction globally. The hierarchy of disposal options categorizes environmental …
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