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Recovery of high quality aggregate from concrete waste

Recovery of high quality aggregate from concrete waste

Recovery of high quality aggregate from concrete waste ...

technology of waste concrete scraps is paramount importance in Japan. So, this research uses the “Pulse Power Technology [1]” for recycling aggregate. We proposed the application of pulsed power to recovery of the high quality recycled aggregate from concrete waste[2]. The pulse power technology can generate the huge energy at moment, and

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Recovery of high quality aggregate from concrete waste ...

Request PDF Recovery of high quality aggregate from concrete waste using the pulsed power technology In Japan, the most of waste concrete scraps have been eused as

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(PDF) Advanced Process for Recovery of High Quality ...

Preheating and grinding method was examined as a way for recovery of high quality recycled aggregates from waste concrete. As results, as the preheating temperature increased, the removal rate of ...

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Assessment of a microwave-assisted recycling process for ...

Jan 10, 2014  Therefore, recycled concrete aggregates are not beneficiated as aggregates for new concrete manufacturing but they are mainly downcycled as road pavement materials. A breakthrough method for liberating aggregates from concrete waste is then required to produce high quality recycled aggregates.

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Assessment of amicrowave-assisted recycling process for ...

the recovery of high-quality aggregates from concrete waste. Selective fragmentation 1. Introduction Concrete is the world's most widely used construction material but its production has negative impacts on the environment and on our future capacity to meet an ever-increasing demand. The global con­

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High-quality coarse aggregate recycling from waste ...

Jan 29, 2020  10%  This study presents a liberation process for recycling high-quality coarse aggregates from waste concrete by impacting with steel grits. Considering the mortar liberation ratio and specific energy for the liberation process as well as the water absorption and apparent density of the recycled coarse aggregates (RCA), the effects of impact velocity, impact time, and concrete

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Assessment of a microwave-assisted recycling process for ...

A microwave pretreatment was studied for producing high-quality aggregates. • Weakening of concrete samples was observed even at low energy microwave heating. • Decrease of the fracture energy and increase of the aggregate liberation. • Assessment of the robustness of the process for treating concrete waste.

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High-quality coarse aggregate recycling from waste ...

Jan 29, 2020  This study presents a liberation process for recycling high-quality coarse aggregates from waste concrete by impacting with steel grits. Considering the mortar liberation ratio and specific energy for the liberation process as well as the water absorption and apparent density of the recycled coarse aggregates (RCA), the effects of impact velocity, impact time, and concrete strength on the ...

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Sustainable High Quality Recycling of Aggregates from ...

Dec 25, 2015  Sustainable High Quality Recycling of Aggregates from Waste-to-Energy, Treated in a Wet Bottom Ash Processing Installation, for Use in Concrete Products. Van den Heede P(1), Ringoot N(2), Beirnaert A(3), Van Brecht A(4), Van den Brande E(5), De Schutter G(6), De Belie N(7).

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Ji-Whan Ahn , Kwang-Suk You , Gi-Chun Han , Nam-Il Um ...

Advanced Process for Recovery of High Quality Recycled Aggregate from Waste Concrete Ji-Whan Ahn a , Kwang-Suk You a , Gi-Chun Han a , Nam-Il Um a Hee-Chan Cho b

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Assessment of a microwave-assisted ... - Academia

Assessment of a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete waste International Journal of Mineral Processing, 2014 Florent Bourgeois

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Completely recyclable concrete of aggregate-recovery type ...

A microwave-assisted comminution process is therefore an effective recycling technique for the recovery of high-quality aggregates from concrete waste. View Show abstract

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[PDF] CONCRETE OF AGGREGATE-RECOVERY TYPE BY USING ...

Concrete is the most widely consumed construction material, which is expected to serve as a wastebasket for industrial by-products but will generate a lot of waste in the future while currently most concrete waste is recycled as road bottoming and backfilling. Closed-loop recycling systems for concrete, therefore, will be one of the key issues in establishing a resource-recycling society.

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Reduction of contaminated concrete waste by recycling ...

Sep 30, 2014  Iizasa S, Shigeishi M, Namihira T. Recovery of high quality aggregate from concrete waste using the pulsed power technology. Clean Technology 2010, Chapter 6, pp. 325–328, Clean Technology and Sustainable Industries Organization, June 2010.

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Nicholas LIPPIATT, Ph.D. - 博士毕业生 - WTCR废弃物利用

Assessment of a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete waste, International Journal of Mineral Processing 126, p. 90 -98 [5] Lippiatt, N. Bourgeois, F. 2014. Recycling-oriented investigation of local porosity changes in microwave heated-concrete, KONA Powder and Particle Journal 31, p. 247-264

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Construction and demolition waste generation and ...

Jun 10, 2018  Such a high waste utilization and recovery efficiency can be contributed to the well management chain from the point of production to recycle and reuse again. In the Czech Republic, concrete waste exhibited increasing trend in CD, but a major percentage of CD waste consisted of soils and excavated material.

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From concrete waste to concrete buildings

To address that question, Di Maio teamed up with Strukton to develop C2CA (Concrete to Cement and Aggregates). After a building is demolished and its materials are collected, the concrete waste goes into an innovative machine called Advanced Dry Recovery (ADR). The rumbling ADR separates the concrete waste in two streams.

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Electrical fragmentation applied to the recycling of ...

Jan 10, 2017  This study presents an evaluation of an innovative technique for the treatment of concrete waste by electrical fragmentation. Scientific arguments are made, indicating that it is possible to strive for the recovery of waste by jointly recycling aggregates and the hydrated cement paste, in order to manufacture new concrete of the same mechanical quality as that produced using raw materials.

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Assessment of a microwave-assisted recycling process for ...

Kathy Bru, Solène Touzé, Florent Bourgeois, Nicholas Lippiatt, Yannick Ménard. Assessment of a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete waste. International Journal of Mineral Processing, Elsevier, 2014, vol. 126, pp. 90-98. 10.1016/j.minpro.2013.11.009 . hal-00920886

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Halfbakery: Gravel recovery

High quality scientific journal: Include a Publishable Video Presentation of Your Paper... science: Gravel recovery To recover gravel/aggregate from waste concrete (+2) OK, so, if you didn't know, concrete is one of the most recycled materials (asphalt and steel are also at the top of the list -

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Using Microwave Heating to Completely Recycle Concrete

Shima, H. and Tateyashiki, H. (1999) New Technology for Recovering High-Quality Aggregate from Demolished Concrete. Proceedings of the 5th International Symposium on East Asian Recycling Technology, The M.M.P.I. in Japan 1999, 106-109. Tamura, M., Tomosawa, F. and Noguchi, T. (1997) Recycle-Oriented Concrete with Easy-to-Collect Aggregate ...

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Concrete Waste Recycling Process for High Quality ...

Jan 15, 2008  @article{osti_21144165, title = {Concrete Waste Recycling Process for High Quality Aggregate}, author = {Ishikura, Takeshi and Fujii, Shin-ichi}, abstractNote = {Large amount of concrete waste generates during nuclear power plant (NPP) dismantling. Non-contaminated concrete waste is assumed to be disposed in a landfill site, but that will not be the solution especially in the future,

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[PDF] CONCRETE OF AGGREGATE-RECOVERY TYPE BY USING ...

Concrete is the most widely consumed construction material, which is expected to serve as a wastebasket for industrial by-products but will generate a lot of waste in the future while currently most concrete waste is recycled as road bottoming and backfilling. Closed-loop recycling systems for concrete, therefore, will be one of the key issues in establishing a resource-recycling society.

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From concrete waste to concrete buildings

From waste to raw material. But how do we get from concrete demolition waste to high quality, 100% circular raw materials that can immediately be used to produce new concrete? To address that question, Di Maio teamed up with Strukton to develop C2CA (Concrete to Cement and Aggregates). After a building is demolished and its materials are ...

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Creating quality aggregates - Enva

Quality protocols explain when a waste derived material can be regarded as a non-waste product and no longer subject to waste controls. They aim to produce high quality products from waste materials to promote greater recovery and recycling. WRAP Protocol is End of waste criteria for the production and use of aggregates from inert waste. The ...

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Improving the Quality of Mixed Recycled Coarse Aggregates ...

Jan 02, 2017  Bru et al. developed a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete waste . Recently, a near-infrared sorting technology was constructed for upgrading the quality of mixed recycled aggregates from CDW [ 16 ].

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characteristics and recoverability of low quality c ...

process. This would allow high-quality crushed coarse aggregate with properties closest to those of the original to be recovered from concrete waste. 2. Complete recovery of coarse aggregates using microwave heating . Under the aforementioned circumstances, im-proving the quality of low-quality

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Treatment Methods for the Quality Improvement of Recycled ...

Jan 24, 2021  Bru K, Touzé S, Bourgeois F, et al. Assessment of a Microwave-Assisted Recycling Process for the Recovery of High-Quality Aggregates from Concrete Waste[J]. Int. J. Miner. Process., 2014, 126: 90–98. CAS Article Google Scholar [104]

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Design Strategy for Recycled Aggregate Concrete: A Review ...

Jun 17, 2021  Renewable cycle of recycled concrete aggregates (RCAs). The production of concrete requires the consumption of huge quantities of aggregates, as the global consumption of aggregate associated with construction was about 40 billion tons in 2014 [5]. The demand for aggregates is expected to double in the coming decades if the high demand for ...

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Halfbakery: Gravel recovery

High quality scientific journal: Include a Publishable Video Presentation of Your Paper... science: Gravel recovery To recover gravel/aggregate from waste concrete (+2) OK, so, if you didn't know, concrete is one of the most recycled materials (asphalt and steel are also at the top of the list -

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How Does the European Recovery Target for Construction ...

Sep 06, 2016  As an example, high recovery targets (90 %) could be set for waste types with well-functioning recovery routes within the construction sector, e.g. asphalt and crushed concrete. For waste types where presence of contaminants might be a major problem, e.g. the fine fraction resulting from recycling of track ballast, a lower recovery rate is needed.

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Design Strategy for Recycled Aggregate Concrete: A Review ...

Currently, a number of disadvantages hampers the use of recycled concrete aggregates (RCA). The current review proves that concretes made with complete replacement of natural aggregate with RCA allow the production of high-quality concrete. One of the possibilities for improving concrete properties with RCA is the use of extended curing and pozzolanic materials with varying cement ratios.

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Development of recycling techniques on decommissioning ...

One of main themes is on concrete recycling techniques, which deals with high quality aggregate retrieval from concrete waste, high efficient usage of the by-product powder to recycling products, and effective usage of radioactive concrete to filling material for waste form.

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Using Microwave Heating to Completely Recycle Concrete

Shima, H. and Tateyashiki, H. (1999) New Technology for Recovering High-Quality Aggregate from Demolished Concrete. Proceedings of the 5th International Symposium on East Asian Recycling Technology, The M.M.P.I. in Japan 1999, 106-109. Tamura, M., Tomosawa, F. and Noguchi, T. (1997) Recycle-Oriented Concrete with Easy-to-Collect Aggregate ...

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Report of Recycled Concrete Aggregates

Aug 08, 2019  6. Praveen Mathew, Vilma Baby, Dipak Kumar Sahoo, Glory Joseph(2013), 'Manually recycled coarse aggregate from concrete waste - a sustainable substitute for customary coarse aggregate', American Journal of Engineering Research, e-ISSN : 2320-0487 p- ISSN :2320-0936, Volume- 3, pp-34-38. 7.

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