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Paving with precast concrete made with recycled mixed ceramic aggregates : a viable technical option for the valorization of Construction and Demolition Wastes (CDW)

(2019) MATERIALS. 12(1). p.1-23
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Abstract
This research aimed to prove the feasibility of producing two types of precast elements widely used in construction, such as curbstones and paving blocks, using recycled concrete made with a 50% substitution of the natural gravel by recycled mixed aggregates with a significant ceramic content (>30%). In order to prove the quality of such mass concrete recycled precast elements, two different mixes were used: the first one was a conventional concrete mix provided by Prefabricados de Hormigon Pavimentos Paramo S.L., one of the collaborating companies in this study, and the other was a mixture in which wt 50% of the natural coarse aggregates were substituted for recycled mixed aggregates ceramic (RMAc). This recycled aggregate is a heterogeneous mixture of unbound aggregates, concrete, ceramic, etc., used as a secondary recycled aggregate and commonly produced in a lot of recycling plants in many European countries. This material was supplied by Tecnologia y Reciclado S.L., the other collaborating company. Both mixtures were representative in order to establish the comparative behavior between them, taking into account that smaller percentages of replacement of the natural with recycled aggregates will also produce good results. This percentage of substitution represents a high saving of natural resources (gravel) and maintains a balanced behavior of the recycled concrete, so this new material can be considered to be a viable and reliable option for precast mass concrete paving elements. The characterization of the recycled precast elements, covering mechanical, microstructural, and durability properties, showed mostly similar behavior when compared to the analogous industrially-produced pieces made with conventional concrete.
Keywords
PORE-SIZE DISTRIBUTION, CRUSHED CLAY BRICK, MECHANICAL-PROPERTIES, ELECTRICAL-RESISTIVITY, WATER-ABSORPTION, NONSTRUCTURAL CONCRETE, COMPRESSIVE STRENGTH, FROST-RESISTANCE, PRE-SATURATION, HIGH-VOLUME, precast paving elements, recycled concrete, recycled mixed ceramic, aggregates, mechanical, microstructural, and durability characterization

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Citation

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MLA
Juan-Valdes, Andres et al. “Paving with Precast Concrete Made with Recycled Mixed Ceramic Aggregates : a Viable Technical Option for the Valorization of Construction and Demolition Wastes (CDW).” MATERIALS 12.1 (2019): 1–23. Print.
APA
Juan-Valdes, A., Garcia-Gonzalez, J., Rodriguez-Robles, D., Ignacio Guerra-Romero, M., Lopez Gayarre, F., De Belie, N., & Moran-del Pozo, J. M. (2019). Paving with precast concrete made with recycled mixed ceramic aggregates : a viable technical option for the valorization of Construction and Demolition Wastes (CDW). MATERIALS, 12(1), 1–23.
Chicago author-date
Juan-Valdes, Andres, Julia Garcia-Gonzalez, Desiree Rodriguez-Robles, Manuel Ignacio Guerra-Romero, Fernando Lopez Gayarre, Nele De Belie, and Julia M. Moran-del Pozo. 2019. “Paving with Precast Concrete Made with Recycled Mixed Ceramic Aggregates : a Viable Technical Option for the Valorization of Construction and Demolition Wastes (CDW).” Materials 12 (1): 1–23.
Chicago author-date (all authors)
Juan-Valdes, Andres, Julia Garcia-Gonzalez, Desiree Rodriguez-Robles, Manuel Ignacio Guerra-Romero, Fernando Lopez Gayarre, Nele De Belie, and Julia M. Moran-del Pozo. 2019. “Paving with Precast Concrete Made with Recycled Mixed Ceramic Aggregates : a Viable Technical Option for the Valorization of Construction and Demolition Wastes (CDW).” Materials 12 (1): 1–23.
Vancouver
1.
Juan-Valdes A, Garcia-Gonzalez J, Rodriguez-Robles D, Ignacio Guerra-Romero M, Lopez Gayarre F, De Belie N, et al. Paving with precast concrete made with recycled mixed ceramic aggregates : a viable technical option for the valorization of Construction and Demolition Wastes (CDW). MATERIALS. Basel: Mdpi; 2019;12(1):1–23.
IEEE
[1]
A. Juan-Valdes et al., “Paving with precast concrete made with recycled mixed ceramic aggregates : a viable technical option for the valorization of Construction and Demolition Wastes (CDW),” MATERIALS, vol. 12, no. 1, pp. 1–23, 2019.
@article{8601741,
  abstract     = {This research aimed to prove the feasibility of producing two types of precast elements widely used in construction, such as curbstones and paving blocks, using recycled concrete made with a 50% substitution of the natural gravel by recycled mixed aggregates with a significant ceramic content (>30%). In order to prove the quality of such mass concrete recycled precast elements, two different mixes were used: the first one was a conventional concrete mix provided by Prefabricados de Hormigon Pavimentos Paramo S.L., one of the collaborating companies in this study, and the other was a mixture in which wt 50% of the natural coarse aggregates were substituted for recycled mixed aggregates ceramic (RMAc). This recycled aggregate is a heterogeneous mixture of unbound aggregates, concrete, ceramic, etc., used as a secondary recycled aggregate and commonly produced in a lot of recycling plants in many European countries. This material was supplied by Tecnologia y Reciclado S.L., the other collaborating company. Both mixtures were representative in order to establish the comparative behavior between them, taking into account that smaller percentages of replacement of the natural with recycled aggregates will also produce good results. This percentage of substitution represents a high saving of natural resources (gravel) and maintains a balanced behavior of the recycled concrete, so this new material can be considered to be a viable and reliable option for precast mass concrete paving elements. The characterization of the recycled precast elements, covering mechanical, microstructural, and durability properties, showed mostly similar behavior when compared to the analogous industrially-produced pieces made with conventional concrete.},
  articleno    = {24},
  author       = {Juan-Valdes, Andres and Garcia-Gonzalez, Julia and Rodriguez-Robles, Desiree and Ignacio Guerra-Romero, Manuel and Lopez Gayarre, Fernando and De Belie, Nele and Moran-del Pozo, Julia M.},
  issn         = {1996-1944},
  journal      = {MATERIALS},
  keywords     = {PORE-SIZE DISTRIBUTION,CRUSHED CLAY BRICK,MECHANICAL-PROPERTIES,ELECTRICAL-RESISTIVITY,WATER-ABSORPTION,NONSTRUCTURAL CONCRETE,COMPRESSIVE STRENGTH,FROST-RESISTANCE,PRE-SATURATION,HIGH-VOLUME,precast paving elements,recycled concrete,recycled mixed ceramic,aggregates,mechanical,microstructural,and durability characterization},
  language     = {eng},
  number       = {1},
  pages        = {24:1--24:23},
  publisher    = {Mdpi},
  title        = {Paving with precast concrete made with recycled mixed ceramic aggregates : a viable technical option for the valorization of Construction and Demolition Wastes (CDW)},
  url          = {http://dx.doi.org/10.3390/ma12010024},
  volume       = {12},
  year         = {2019},
}

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