Home--->concrete recycling research

  • Concrete Recycling TU Delft

    High-grade recycling of EOL concrete liberates the old cement paste from the concrete which can then be recycled into new cement with lower CO 2 emissions. End-of-Life concrete with steel rebars . The aim of the Delft research is to create a high-grade recycling process for EOL concrete that is economically competitive with the RBA route but environmentally superior and more sustainable. This

    Concrete Recycling Taylor & Francis Group

    21/03/2019· François de Larrard is Scientific Director of the R&D centre of the LafargeHolcim group and Scientific Director of the French national project Recybéton.

    (PDF) Recycled concrete: a review Find and share research

    CSI Recycling Concrete Full Report, 2008, The Cement Sustainability Initiative, World Business Council for Sustainable Development, Iniciativa por la sostenibilidad del cemento, 200 8,

    A STUDY ON RECYCLED CONCRETE AGGREGATES

    social and environmental concern s on the recycling of the waste have consequently been increased. Many researchers state that recycled concrete aggregates (RCA) are only suitable for non -structural concrete application. This research, however, shows that the recycled aggregates that are obtained from concrete specimen make good quality concrete. Concrete waste from demolished structure has

    ENVIRONMENTAL IMPACT OF CONCRETE RECYCLING, COMING

    This paper presents the results of a research study on the environmental impact produced by the recycling of concrete originating from construction and demolition waste (C&DW). The aim of the study was to implement a life cycle inventory (LCI) of the concrete recycling phases. It was carried out in Spain, with data collected from the various recycling processes involved in the mobile crushing

    (PDF) Recycled concrete aggregates Find and share

    01/02/2005· This report deals with practical experience and field research concerning the recycling of waste concrete at a precasting plant in Belgium. For nearly 5 years, all concrete

    Research shows recycled concrete can Recycling Today

    30/11/2020· In fact, the recycled concrete had a higher rate of compressive strength after 28 days of curing while maintaining a greater or equal strength during the period of the research, according to the university. The researchers suggest the recycled concrete can be a 100 percent substitute for non-structural applications.

    The Environmental Impact of Recycled Concrete

    Keywords: sustainability, concrete, recycling, waste 181. 1. Introduction Concrete is a compound material many used in buildings, mainly in multi-storey buildings. Cement is a material that needs 1 to 1.5 metric ton of lime; uses a lot of energy for its production, around 4000 MJ/metric ton and releases 0.8 to 2 metric ton of carbon dioxide to the atmosphere to produce the clinker (Kumar et al

    Recycled aggregates and recycled aggregate concrete

    01/05/1986· The extensive, but fragmented research on recycled concrete aggregates and recycled aggregate concrete, which has been carried out in various parts of the world from 1945 to 1985, has been collated to form a comprehensive state-of-the-art document. A thorough analysis of the data has been made, leading to a guide to the production and evaluation of recycled concrete aggregates as

    Research shows recycled concrete can Recycling Today

    30/11/2020· In fact, the recycled concrete had a higher rate of compressive strength after 28 days of curing while maintaining a greater or equal strength during the period of the research, according to the university. The researchers suggest the recycled concrete

    Sika Achieves Breakthrough in Concrete Recycling by

    Research & Development Research Strategy Organization Partnerships Technologies Milestone in Concrete Recycling. With the new process, old concrete can be completely recycled and saved from landfill. So far, attempts to recycle old concrete have led to rather low recycling rates, and only 30% of primary material can be substituted by these recycled materials in structural concrete. The

    Economic Comparison of Concrete Recycling: A Case Study

    Recycling concrete waste as recycled aggregate is one of the methods to reduce the concrete waste. Therefore, this paper investigates the economical considerations in recycling concrete waste. A comparative study on costs and benefits between the current practice and the concrete recycling method is examined. The study shows that it has a negative net benefit for the current practice while a

    Overview of Concrete Recycling Legislation and

    This empirical research on concrete recycling in the United States consists of two parts: a qualitative study of the legislation, regulation, and practice of solid waste management (SWM) and concrete recycling in 45 states and the District of Columbia, and a questionnaire survey of practitioners' views of concrete recycling in Ohio and California. Based on the qualitative analysis, the studied

    Concrete recycling Wikipedia

    Concrete recycling is the use of rubble from demolished concrete structures. Recycling is cheaper and more ecological than trucking rubble to a landfill. Crushed rubble can be used for road gravel, revetments, retaining walls, landscaping gravel, or raw material for new concrete.Large pieces can be used as bricks or slabs, or incorporated with new concrete into structures, a material called

    Economic comparison of concrete recycling: A case

    This empirical research on concrete recycling in the United States (U.S.) consists of two parts: a qualitative study of the legislation, regulation and practice of solid waste management (SWM) and

    The Importance of Concrete Recycling

    29/12/2017· The Concrete Recycling Process . Aside from base course, RCA is high-quality aggregate, the product of numerous processing steps including crushing, pre-sizing, sorting, screening and contaminant elimination. The key is to start with clean material that can be sized by product requirements. Processing begins with primary jaws, cones and large impactors designed to reduce concrete debris

    Recycled aggregates and recycled aggregate concrete

    The extensive, but fragmented research on recycled concrete aggregates and recycled aggregate concrete, which has been carried out in various parts of the world from 1945 to 1985, has been collated to form a comprehensive state-of-the-art document. A thorough analysis of the data has been made, leading to a guide to the production and evaluation of recycled concrete aggregates as well as the

    MIT students fortify concrete by adding recycled plastic

    25/10/2017· “This is a part of our dedicated effort in our laboratory for involving undergraduates in outstanding research experiences dealing with innovations in search of new, better concrete materials with a diverse class of additives of different chemistries,” says Büyüköztürk, who is the director of Laboratory for Infrastructure Science and Sustainability. “The findings from this

    Project report on waste & recycled material in concrete

    In the coming future Recycling of Waste Materials & by production for concrete technology will achieve new heights, as attempts are already being made to use municipal refuse & waste oil as partial substitutes for production of cement clinker. We have to promote & development in the area of utilization of waste materials. Variability of the physical & chemical characteristics & availability at

    Research shows recycled concrete can Recycling Today

    30/11/2020· The researchers suggest the recycled concrete can be a 100 percent substitute for non-structural applications. “As innovations continue in the composition of recycled concrete, we can envision a time in the future where recycled concrete can

    Overview of Concrete Recycling LSBU Open Research

    Recycling concrete waste helps reduce the negative environmental impacts of construction activities. Worldwide, concrete recycling rates and available applications for recycled concrete vary widely. A deep understanding of the current status of concrete recycling in individual countries or regions would allow development of applicable and effective strategies for improvement.

    Investigation of Concrete Recycling LSBU Open

    The emerging sustainable development movement in the construction industry requires the recycling of waste materials to reduce the negative environmental impact of construction activities. In many countries, old concrete, a major waste stream generated from the demolition of obsolete buildings/structures, is being recycled. Keywords

    Recycled aggregates and recycled aggregate concrete

    The extensive, but fragmented research on recycled concrete aggregates and recycled aggregate concrete, which has been carried out in various parts of the world from 1945 to 1985, has been collated to form a comprehensive state-of-the-art document. A thorough analysis of the data has been made, leading to a guide to the production and evaluation of recycled concrete aggregates as well as the design, production, and use of recycled aggregate concrete

    Recycled Aggregates in Concrete • Aggregate Research

    Recycling of concrete is a relatively simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. See ACI 555 (2001) for more information on processing old concrete into recycled concrete aggregates. The quality of concrete with recycled concrete aggregates is very dependent on the quality of the recycled material used

    (PDF) Recycling of construction and demolition concrete

    The answer to the responsible management of these debres lies in recycling. Many research works corroborate the fact that coarse aggregates and a limited amount of fines from C & D concrete debris can be recycled for use in the production of concrete for fresh construction without significant loss in quality [7 -12]. In spite of this fact however, the use of recycled aggregate for fresh

    Fragmentation and Recycling of Reinforced Concrete

    What follows is a short presentation of some results of a research project on demolition, recycling and dismantling of reinforced concrete. This paper deals with some of the results obtained with the fragmentation of 30 types of 15 years old concrete, with separation of the reinforcement by means of explosives and with the recycling of the fragments as aggregates for new concrete.

    MIT students fortify concrete by adding recycled plastic

    25/10/2017· MIT students have developed a form of concrete using recycled plastic water bottles. The new material is 20 percent stronger than traditional concrete and could help cut the cement industry’s carbon emissions.

    Project report on waste & recycled material in concrete

    14th March 2016. (North America) — Recycled-aggregate concrete containing fly ash is an example of construction material in harmony with this concept, whereby sustainable construction development is useful with satisfactory performance, in both safety and service of structures, at lower costs and with advantages over ordinary concrete.

    End of life recycling concretecentre

    Used tyres have even been recycled into concrete as they contain steel fibre, according to recent research sponsored by the Department of Trade and Industry (DTI). The research found that recycled steel fibre (which is cheaper than conventional steel fibre) leads to an increase in concrete's strength, ductility and toughness, making it suitable for a range of specialised applications such as impact and

    Recycled Concrete in Structural Applications for

    01/01/2017· Recycling old concrete is a major practice that the construction industry must focus on to led to a sustainable future. The use of RA in concrete provides a sustainable alternative to NA, and has proved to be successful in structural applications by various researchers. However, lack of utilisation of RA as a structural material was observed in the industry practices. This led to carry out qualitative

    Concrete Recycling: Research and Practice Civil

    08/12/2019· Concrete Recycling: Research and Practice. François de Larrard is Scientific Director of the R&D centre of the LafargeHolcim group and Scientific Director of the French national project Recybéton. He formerly spent almost thirty years at IFSTTAR (formerly LCPC).

    Concrete Recycling: Research and Practice: Amazon.co.uk

    Buy Concrete Recycling: Research and Practice 1 by de Larrard, Francois, Colina, Horacio (ISBN: 9781138724723) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders. Select Your Cookie Preferences . We use cookies and similar tools to enhance your shopping experience, to provide our services, understand how customers use our services so we can make

    (PDF) Recycling of construction and demolition concrete

    Many research works corroborate the fact that coarse aggregates and a limited amount of fines from C & D concrete debris can be recycled for use in the production of concrete for fresh construction without significant loss in quality [7 -12]. In spite of this fact however, the use of recycled aggregate for fresh concrete is yet to gain desirable acceptance in the local building construction sector in Nigeria owing

    ACHIEVING SUSTAINABILITY OF CONCRETE BY RECYCLING OF

    research was to achieve a more sustainable concrete using different recycled aggregate types, such as: "demolished" concrete, crushed bricks, recycled rubber and recycled "Ytong" blocks. Also, part of the investigation included the possible application of supplementary mineral materials cement

    Recycled Aggregates in Concrete • Aggregate Research

    Recycling of concrete is a relatively simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. See ACI 555 (2001) for more information on processing old concrete into recycled concrete aggregates. The quality of concrete with recycled concrete aggregates is very dependent on the quality of the recycled material used

    Fragmentation and Recycling of Reinforced Concrete

    What follows is a short presentation of some results of a research project on demolition, recycling and dismantling of reinforced concrete. This paper deals with some of the results obtained with the fragmentation of 30 types of 15 years old concrete, with separation of the reinforcement by means of explosives and with the recycling of the fragments as aggregates for new concrete.

    MIT students fortify concrete by adding recycled plastic

    25/10/2017· MIT students have developed a form of concrete using recycled plastic water bottles. The new material is 20 percent stronger than traditional concrete and could help cut the cement industry’s carbon emissions.

    Project report on waste & recycled material in concrete

    14th March 2016. (North America) — Recycled-aggregate concrete containing fly ash is an example of construction material in harmony with this concept, whereby sustainable construction development is useful with satisfactory performance, in both safety and service of structures, at lower costs and with advantages over ordinary concrete.

    Use of RECYCLED AGGREGATES In CONCRETE- A

    The extensive research on recycled concrete aggregate and recycled aggregate concrete (RAC) as started from year 1945 in various part of the world after second world war, but in a fragmented manner. First effort has been made by Nixon in 1977 who complied all the work on recycled aggregate carried out between 1945-1977 and prepared a state-of-the-art report on it for RILEM technical committee

  •