recycling of concrete dehydration and reactivation of cement

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Recycling of concrete: Dehydration and reactivation of

2020-11-11  Recycling of concrete: Dehydration and reactivation of cement I Acknowledgements I would like to thank my supervisor Prof. Hubert Rahier for guiding me in these months, and Jorn Van De Sande and Eduarda Baptista for all the support and help. I would like to thank people from the Department of Physical Chemistry and Polymer Science

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Recycling of concrete: Dehydration and reactivation of

2019-1-15  Recycling of concrete: Dehydration and reactivation of cement: Otro titulo: Reciclaje de hormigón: deshidratación y reactivación de cemento: Autor: Gil Sayas, Susana: Director(es): Alcaina Miranda, María Isabel Iborra Clar, María Isabel Rahier, Hubert: Entidad UPV: Universitat Politècnica de València.

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Reactivated cementitious materials from hydrated cement ...

2013-5-1  1. Introduction. The cement and concrete industry faces an ever increasing demand to reduce its impact on the environment. Concrete is nowadays one of the most used manufactured materials, with worldwide production currently exceeding 20,000 million tons per year, as estimated from the 2.9 billion tons of Portland cement produced in 2009 .Therefore, small

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Concrete to concrete (Beton naar hoogwaardig beton) - VUB

2018-1-3  Susana Gil Sayas Recycling of concrete: Dehydration and reactivation of cement, ULB-VUB 2018 (June). Eduarda Baptista, Jun Gu, Hadi Kamyab, Nicole Dilissen, Marie-Paule Delplancke, Hubert Rahier Calculating activation energy of Portland cement blended with dehydrated cement by isothermal calorimetry , International Conference Sustainable ...

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Recycling concrete, a reality? Result In Brief CORDIS ...

Why glass and not concrete? - When cement is produced from natural materials, the conversion of CaCO3 into CaO releases large quantities of a greenhouse gas: carbon dioxide (70 million tonnes in 1991). Complete recycling involves only dehydration and eliminates the need for this conversion step, with a corresponding reduction in the gas release.

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Rehydration reactivity of recycled mortar from concrete ...

2008-8-1  The separated HCP fines and FRCA preheated at 500 °C were then used to prepare specimens for testing the mechanical properties.The specimens of separated HCP fines were designed with the 0.4 water/HCP ratio and cast into a mold of dimensions 20 mm × 20 mm × 20 mm.The corresponding fresh mortars containing preheated FRCA were cast into a mold of

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Properties of mortars produced with reactivated ...

Concrete waste fines, which are a mix of fine aggregates, coarse aggregate debris, and the hydrated cement paste, are currently not a part of the

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(PDF) INVERSION OF THE CEMENT HYDRATION AS A NEW

M.T. Blanco, F. Puertas, T. Vazquez, A. de la Fuente, The most suitable techniques and methods to identify high alumina cement and based portland cement in concrete. Materiales de construction 42 ...

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1710005 CIC ResearchSummaryReport CICRS 011 G V07

2020-8-18  represented only 19% of that of concrete board (1.52 W m-1 K ) and it was nearly comparable to the value of solid wood panel (0.24 W m -1 K at 1.0 g cm -3 ) for thermal insulation uses in BS EN 13986 (2004), despite being higher than that of waste wood (0.07 W m -1 K -1 ).

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Recycling techniques Upcycling Concrete - BnB

Recycling techniques. Traditional breaking. ... Slimbreker does not break through the sand and gravel but only breaks the cement hydrate (the cement stone, the reaction product of cement with water), the glue that holds the sand and gravel together. ... Microwave fragmentation and microwave dehydration of concrete.

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Recycling concrete, a reality? Result In Brief CORDIS ...

Why glass and not concrete? - When cement is produced from natural materials, the conversion of CaCO3 into CaO releases large quantities of a greenhouse gas: carbon dioxide (70 million tonnes in 1991). Complete recycling involves only dehydration and eliminates the need for this conversion step, with a corresponding reduction in the gas release.

Get Price

About the project Upcycling Concrete - BnB

The recycled material obtained acts as a cement provided alkali activation after dehydration ( 450 ° C). This also opens the door to a new, more energy-efficient way of producing cement.

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Formation and hydration of eco-friendly cement using ...

2021-7-20  According to the scientific literature, the addition of a certain amount of GCW or silica gel to cement has a beneficial impact on the concrete mix,

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The incorporation of fine recycled concrete aggregates as ...

2021-10-7  Raw materials. The cement used in this study is an ordinary Portland cement CEM I 52.5R. The fine recycled concrete aggregates (FRCA) were collected in recycling units, located in four areas of France which use different geological natural aggregates, namely mainly siliceous aggregates (0/4 mm fraction size) and silico-calcareous aggregates (0/6 mm fraction size).

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Formation and hydration of eco-friendly cement using ...

2021-7-20  According to the scientific literature, the addition of a certain amount of GCW or silica gel to cement has a beneficial impact on the concrete mix, as well as on the physical and mechanical parameters of hardened concrete 36 – 40. However, most of these papers focused on partial OPC replacement, but information about the application of GCW ...

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The Phase Transformation of Recycling Concrete in ...

In this paper, the artificial aggregates were prepared by limestone and industrial wastes in accordance with the ratio of cement raw meal, to obtain the recycling concrete replacing natural aggregates. Cement clinker could be regenerated by these recycling concrete and the aim of recycling could be realized. After these concrete was cured for 90 days, then was crushed and

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An Advanced Concrete Recycling Technology and its ...

2018-1-14  54 H. Shima, H. Tateyashiki, R. Matsuhashi and Y. Yoshida / Journal of Advanced Concrete Technology Vol. 3, No. 1 53-67, 2005 role of advanced concrete recycling systems. This study aims at filling this gap. Input-output analysis is widely used in economics for determining the economy-wide repercussions due to a

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Recycling of End of Life Concrete Fines into Hardened ...

2016-5-24  Recycling of End of Life Concrete Fines into Hardened Cement and Clean Sand() Somayeh Lotfi, Peter Rem. Department of Materials and Environment, Delft University of Technology, Delft, Netherlands. DOI:

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张同生(华南理工大学博士生导师)_百度百科

张同生,男,1983年1月生,山东章丘人,博士,中共党员,华南理工大学材料科学与工程学院研究员,博士生导师,入选华南理工大学杰出青年人才、广州市珠江科技新星、广东省科技创新青年拔尖人才,兼任中国硅酸盐学会固废分会理事、中国非金属建筑材料微观测试委员会委员、广东省

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Recycling concrete, a reality? Result In Brief CORDIS ...

Why glass and not concrete? - When cement is produced from natural materials, the conversion of CaCO3 into CaO releases large quantities of a greenhouse gas: carbon dioxide (70 million tonnes in 1991). Complete recycling involves only dehydration and eliminates the need for this conversion step, with a corresponding reduction in the gas release.

Get Price

Recycling techniques Upcycling Concrete - BnB

Recycling techniques. Traditional breaking. ... Slimbreker does not break through the sand and gravel but only breaks the cement hydrate (the cement stone, the reaction product of cement with water), the glue that holds the sand and gravel together. ... Microwave fragmentation and microwave dehydration of concrete.

Get Price

About the project Upcycling Concrete - BnB

The recycled material obtained acts as a cement provided alkali activation after dehydration ( 450 ° C). This also opens the door to a new, more energy-efficient way of producing cement.

Get Price

HYDRATION OF BELITE CEMENT PREPARED FROM

2007-5-4  Keywords: Hydration kinetics, Beta dicalcium silicate, Belite cement, Concrete recycling Undersize fractions occurring during the recycling of concrete waste were used for the preparation of belite clinker. The ratio of the undersizes to limestone containing a high percentage of CaO was 1 to 2.25. The mix was converted into the belite

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Formation and hydration of eco-friendly cement using ...

2021-7-20  According to the scientific literature, the addition of a certain amount of GCW or silica gel to cement has a beneficial impact on the concrete mix, as well as on the physical and mechanical parameters of hardened concrete 36 – 40. However, most of these papers focused on partial OPC replacement, but information about the application of GCW ...

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外文翻译(中英文word版)废弃混凝土再生新技术探索_百度文库

2014-5-18  Due to easy hydration of cement stone dehydration need time, so calcining time and dehydration temperature of recycled cement performance cannot be ignored. 1. Determine the decomposition temperature of waste concrete Concrete is made of cement, thick aggregate, such as mineral admixture, the water hydration sclerosis regarding mix-proportion formed a

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The Phase Transformation of Recycling Concrete in ...

In this paper, the artificial aggregates were prepared by limestone and industrial wastes in accordance with the ratio of cement raw meal, to obtain the recycling concrete replacing natural aggregates. Cement clinker could be regenerated by these recycling concrete and the aim of recycling could be realized. After these concrete was cured for 90 days, then was crushed and

Get Price

An Advanced Concrete Recycling Technology and its ...

2018-1-14  54 H. Shima, H. Tateyashiki, R. Matsuhashi and Y. Yoshida / Journal of Advanced Concrete Technology Vol. 3, No. 1 53-67, 2005 role of advanced concrete recycling systems. This study aims at filling this gap. Input-output analysis is widely used in economics for determining the economy-wide repercussions due to a

Get Price

Simple chemistry will enhance the sustainability of ...

2021-4-14  "In concrete, cement is used to bond sand and gravel. Some researchers are investigating how more cement can be replaced with other materials, such as fly ash and blast furnace slag, to reduce CO2 emissions, but this approach is unsustainable because the supply of these materials is decreasing owing to reduced use of thermal power systems and increased

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张同生(华南理工大学博士生导师)_百度百科

张同生,男,1983年1月生,山东章丘人,博士,中共党员,华南理工大学材料科学与工程学院研究员,博士生导师,入选华南理工大学杰出青年人才、广州市珠江科技新星、广东省科技创新青年拔尖人才,兼任中国硅酸盐学会固废分会理事、中国非金属建筑材料微观测试委员会委员、广东省

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