Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mortars with recycled aggregate of construction and demolition waste: Mechanical properties and carbon uptake
https://orcid.org/0000-0002-3022-7420
Graphical abstract Display Omitted
Highlights Properties of mortars with three particle size distributions were evaluated. Carbon uptake was evaluated for 4 recycled aggregate replacement levels. The mortar with 100% of recycled aggregate presented highest CO2 capture. The alteration in particle size distribution had influence in properties evaluated.
Abstract Over the past few years, the use of recycled aggregate (RA) from construction and demolition waste (CDW) has proved to be a promising alternative for increasing the concept of a circular economy within the construction industry. RA contributes to an adequate destination for these wastes besides minimizing the use of natural aggregates (NA). Carbonation also has proved to be a promising alternative to carbon capture, use, and storage. This work aims to evaluate the substitution influence of NA for RA in replacement levels of 0, 25, 50, 75, and 100% with three different particle size distributions to evaluate the particle size influence. Compressive and tensile strength in bending, porosity, absorption, and bulk density were performed to evaluate physical–mechanical properties. The accelerated carbonation test and thermogravimetric analysis were carried out to evaluate the carbon uptake. X-ray microtomography test was carried out in addition to XRD analysis to assess the influence on microstructural properties. The particle size distribution interferes with the results, where washing the aggregate does not significantly improve the investigated properties. The mortar with the optimized properties contained particles between 2.4 mm and 0.15 mm (G2.4). The less emissive mortar was G2.4_100, which reabsorbs 63% of all the carbon dioxide released in production. The mortars with 100% replacement have a less emissive balance, and the replacement level increases the amount of CO2 captured. Cement-based mortars produced with RA can be an alternative for carbon capture due to mineralization from carbonation, promoting the circular economy using RA from CDW.
Mortars with recycled aggregate of construction and demolition waste: Mechanical properties and carbon uptake
https://orcid.org/0000-0002-3022-7420
Graphical abstract Display Omitted
Highlights Properties of mortars with three particle size distributions were evaluated. Carbon uptake was evaluated for 4 recycled aggregate replacement levels. The mortar with 100% of recycled aggregate presented highest CO2 capture. The alteration in particle size distribution had influence in properties evaluated.
Abstract Over the past few years, the use of recycled aggregate (RA) from construction and demolition waste (CDW) has proved to be a promising alternative for increasing the concept of a circular economy within the construction industry. RA contributes to an adequate destination for these wastes besides minimizing the use of natural aggregates (NA). Carbonation also has proved to be a promising alternative to carbon capture, use, and storage. This work aims to evaluate the substitution influence of NA for RA in replacement levels of 0, 25, 50, 75, and 100% with three different particle size distributions to evaluate the particle size influence. Compressive and tensile strength in bending, porosity, absorption, and bulk density were performed to evaluate physical–mechanical properties. The accelerated carbonation test and thermogravimetric analysis were carried out to evaluate the carbon uptake. X-ray microtomography test was carried out in addition to XRD analysis to assess the influence on microstructural properties. The particle size distribution interferes with the results, where washing the aggregate does not significantly improve the investigated properties. The mortar with the optimized properties contained particles between 2.4 mm and 0.15 mm (G2.4). The less emissive mortar was G2.4_100, which reabsorbs 63% of all the carbon dioxide released in production. The mortars with 100% replacement have a less emissive balance, and the replacement level increases the amount of CO2 captured. Cement-based mortars produced with RA can be an alternative for carbon capture due to mineralization from carbonation, promoting the circular economy using RA from CDW.
Mortars with recycled aggregate of construction and demolition waste: Mechanical properties and carbon uptake
https://orcid.org/0000-0002-3022-7420
Graphical abstract Display Omitted
Highlights Properties of mortars with three particle size distributions were evaluated. Carbon uptake was evaluated for 4 recycled aggregate replacement levels. The mortar with 100% of recycled aggregate presented highest CO2 capture. The alteration in particle size distribution had influence in properties evaluated.
Abstract Over the past few years, the use of recycled aggregate (RA) from construction and demolition waste (CDW) has proved to be a promising alternative for increasing the concept of a circular economy within the construction industry. RA contributes to an adequate destination for these wastes besides minimizing the use of natural aggregates (NA). Carbonation also has proved to be a promising alternative to carbon capture, use, and storage. This work aims to evaluate the substitution influence of NA for RA in replacement levels of 0, 25, 50, 75, and 100% with three different particle size distributions to evaluate the particle size influence. Compressive and tensile strength in bending, porosity, absorption, and bulk density were performed to evaluate physical–mechanical properties. The accelerated carbonation test and thermogravimetric analysis were carried out to evaluate the carbon uptake. X-ray microtomography test was carried out in addition to XRD analysis to assess the influence on microstructural properties. The particle size distribution interferes with the results, where washing the aggregate does not significantly improve the investigated properties. The mortar with the optimized properties contained particles between 2.4 mm and 0.15 mm (G2.4). The less emissive mortar was G2.4_100, which reabsorbs 63% of all the carbon dioxide released in production. The mortars with 100% replacement have a less emissive balance, and the replacement level increases the amount of CO2 captured. Cement-based mortars produced with RA can be an alternative for carbon capture due to mineralization from carbonation, promoting the circular economy using RA from CDW.
Mortars with recycled aggregate of construction and demolition waste: Mechanical properties and carbon uptake
Borges, Pietra Moraes (Autor:in) / Schiavon, Jéssica Zamboni (Autor:in) / da Silva, Sérgio Roberto (Autor:in) / Rigo, Eduardo (Autor:in) / Neves Junior, Alex (Autor:in) / Possan, Edna (Autor:in) / Andrade, Jairo José de Oliveira (Autor:in)
28.04.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Performance of mortars containing recycled fine aggregate from construction and demolition waste
| British Library Online Contents | 2017
Performance of mortars containing recycled fine aggregate from construction and demolition waste
| Springer Verlag | 2017
Performance of mortars containing recycled fine aggregate from construction and demolition waste
| Online Contents | 2017
Performance of mortars containing recycled fine aggregate from construction and demolition waste
| Online Contents | 2017