recovery of high quality aggregate from concrete waste

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

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

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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

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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 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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(PDF) Assessment of a microwave-assisted recycling process ...

A microwave-assisted comminution process is therefore an effective recycling technique for the recovery of high-quality aggregates from concrete waste. Composition and properties of the no-slump ...

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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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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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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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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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COMPLETELY RECYCLABLE CONCRETE OF AGGREGATE-RECOVERY

The recovery of high-quality aggregate can also be achieved with low energy by using microwave heating selectively for coating layer. In addition, about 90% of original aggregate can be recycled. Thus, the trade-off relationship between “strength of concrete” and “recovery of aggregates” and another trade-off between “energy ...

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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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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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Utilising CO2 technologies for recycled aggregate concrete ...

Jul 30, 2020  Assessment of a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete waste Int. J. Miner. Process. , 126 ( 2014 ) , pp. 90 - 98

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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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A review of recycled aggregate in concrete applications ...

May 30, 2018  Depending on their qualities, the recycled aggregate produced from CD wastes can be employed in roads, drainage, construction projects, structural concrete and in the production of concrete products. An overview and summary of the current concrete recycling recovery data around the world is shown in Table 1.

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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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Use of Recycled Aggregates Made from Construction and ...

Research has been carried out on recycled aggregates from the exclusive crushing of structural concrete waste (CDWRCon) and mixed ceramic materials (CDWRCer) in selective demolitions. This study analyses the use of these recycled aggregates as wet mix macadam (GARCon, GARCer) and in cement soil (CSRCon, CSRCer). The materials comply with the requirements of a road base; although, due to

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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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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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Open Archive TOULOUSE Archive Ouverte (OATAO)

the recovery of high-quality aggregates from concrete waste. 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-struction industry uses approximately 1.5 billion tonnes of cement

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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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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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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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[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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COMPLETELY RECYCLABLE CONCRETE OF AGGREGATE-RECOVERY

The recovery of high-quality aggregate can also be achieved with low energy by using microwave heating selectively for coating layer. In addition, about 90% of original aggregate can be recycled. Thus, the trade-off relationship between “strength of concrete” and “recovery of aggregates” and another trade-off between “energy ...

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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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Development of High quality Recycled Aggregate Production ...

In this study, high quality recycled aggregate processing circuit was developed to recycle waste concrete. From the waste concrete which is a hydrated compound with coarse aggregate, fine aggregate, and cement material, high quality recycled coarse aggregate for concrete making was produced by autogenous milling and heat pretreatment method.

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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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Report of Recycled Concrete Aggregates

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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Heechan CHO Professor (Full) Ph.D. Seoul National ...

For producing high-quality recycled aggregates from waste concrete, the characteristics of waste concrete when subjected to breakage by impact were investigated under free-fall conditions at ...

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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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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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