Mechanical properties of concrete with recycled aggregates and waste glass

Letelier, Viviana; Tarela, Ester; Osses, Rodrigo; Cárdenas, Juan Pablo; Moriconi, Giacomo

doi:10.1002/suco.201500143

Cited by 37 publications

(27 citation statements)

References 37 publications

(65 reference statements)

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“…It is possible to observe that the contribution of the factor GP Size is high for the compressive strength values at 90 days (32%), with both values being of high statistical significance (P near zero). However, for this same property, the factor % GP proved to have more participation than that found for mortar samples in previous studies [44].…”

Section: Discussionsupporting

confidence: 46%

Use of Waste Glass as A Replacement for Raw Materials in Mortars with a Lower Environmental Impact

et al. 2019

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Glass waste used in mortars or concretes behaves similar to cement, with resulting environmental benefits. In this light, the behavior of glass powder of various particle sizes has been analyzed as a cement replacement in mortars, in an attempt to minimize the loss of strength and durability, and maximize the amount of materials replaced. The dry density, water accessible porosity, water absorption by immersion, capillary absorption coefficient, ultrasonic pulse velocity and both compressive and flexural strengths were studied in the mortars. Furthermore, a statistical analysis of the obtained results and a greenhouse gases assessment were also performed. In view of the results obtained, glass powder of 38 microns allows up to 30% of the cement to be replaced, due to the filler effect combined with its pozzolanic activity. Moreover, it has been observed that glass powder size is one of the factors with the greatest influence among the properties of porosity, absorption and capillarity. On the other hand, in the mechanical properties, this factor does not contribute significantly more than the amount of glass powder. Finally, the greenhouse gasses analysis shows that the incorporation of glass powder reduces the CO2 emissions associated with mortar up to 29.47%.

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Section: Discussionsupporting

confidence: 46%

Use of Waste Glass as A Replacement for Raw Materials in Mortars with a Lower Environmental Impact

et al. 2019

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“…El ecobloque es un producto que es amigable con el ambiente en relación a los productos convencionales, si se mira la evaluación del proceso de producción en términos ambientales, pues esta permitió establecer el valor real del producto teniendo en cuenta la combinación de los métodos de análisis de ciclo de vida y cálculos de energía para los sistemas industriales, realizando el seguimiento y evaluación de los cambios en las prácticas convencionales, se hace necesario la creación de una nueva técnica de construcción para el ecobloque [15].…”

Section: Conclusionesunclassified

Diseño para vivienda de interés social con materiales bioconstructivos y sistema de generación eléctrica autosuficiente en el Alto Magdalena-Colombia

2017

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The present article presents the design and analysis of social interest housing in a rural zone, with bio-building materials that contribute to improving environmental conditions in the territories according the fi nal disposal of PET residues and the incorporation of alternatives cleaning systems, selfsuffi cient energy in the region-city and Alto Magdalena. This proposal regarding renewable energies and bio-building materials has been established in order to solve the problem of the "decent home" in communities are overlooked and that having to get with minimal economic resources, it has already been treated in order to get the progress in whole Latin America and the rest of the world, where people tend to seek a better quality of life in rural communities of countries such as Colombia. Keywords: Eco-Block, Photovoltaic energy, Bio-Construction, Trash, Polymer RESUMEN El presente artículo presenta el diseño y análisis de una vivienda de interés social en la zona rural, con materiales bioconstructivos que aportan a mejorar las condiciones ambientales del territorio de acuerdo a la disposición fi nal de residuos PET y la incorporación de sistemas alternativos de energía limpia autosufi ciente en las viviendas rurales de la Ciudad Región y el Alto Magdalena. Igualmente, esta propuesta de energías renovables y materiales bioconstructivos se establece para solucionar el problema de vivienda digna a las comunidades menos favorecidas y con pocos recursos económicos, aprovechando los avances sobre el particular que han tenido experiencias en América Latina y el mundo, donde se propende por una mejor calidad de vida de la población campesina en países como Colombia.

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“…Furthermore, concrete durability is affected by the high water absorption of RAC and the porous mortar adhering to the surface . To determine the advantages of recycled concrete, experts and scholars have enhance the performance of RCA through extensively studied treatment methods, such as CO 2 treatment, improvement of mixing technology and addition of admixtures (fly ash, silica fume, nano silica, and glass powder) …”

Section: Introductionmentioning

confidence: 99%

Evaluation of microcracks in the interfacial transition zone of recycled rubber concrete

Wang

2019

Structural Concrete

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This work focuses on the feasibility of recycling waste tire rubber aggregates into recycled concrete. The performance of interface transition zone (ITZ) is a key factor affecting the mechanical properties and durability of concrete. The influence of rubber particle size (5-10, 10-20, 20-50, and 50-90 mesh) and volume fraction of rubber aggregate (0, 10, and 20%) on the ITZ of common and rubber aggregatecement pastes was studied. Scanning electron microscopy was used to observe the microstructure of recycled rubber concrete cured at constant temperature and humidity for 28 days. Moreover, the size of microcracks in the ITZ area was evaluated. Results showed that the crack width of the ITZ between the rubber and cement paste (ITZ-R) and between the ordinary aggregate and cement paste (ITZ-S) showed similar variation patterns. The addition of 50-90 mesh rubber powder improved the ITZ micro-crack structure of rubber concrete. Increasing the rubber content and particle size also increased the microcrack width of ITZ. The size of rubber aggregate was the key factor affecting the crack width in ITZ. Finally, the addition of rubber inhibited the hydration degree of cement, reduced the formation of hydration products in ITZ and substantially affected ITZ-R. K E Y W O R D Sinterfacial transition zone, microcracks, recycled rubber concrete, scanning electron microscopy

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Mechanical properties of concrete with recycled aggregates and waste glass

Cited by 37 publications

References 37 publications

Use of Waste Glass as A Replacement for Raw Materials in Mortars with a Lower Environmental Impact

Use of Waste Glass as A Replacement for Raw Materials in Mortars with a Lower Environmental Impact

Diseño para vivienda de interés social con materiales bioconstructivos y sistema de generación eléctrica autosuficiente en el Alto Magdalena-Colombia

Evaluation of microcracks in the interfacial transition zone of recycled rubber concrete

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