| Autor: |
Rojas-Valencia, Mª. Neftalí, Penagos, Armando Aguilar, Fernández Rojas, Denise Y., López, Alberto López, Gálves, David Morillón |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2017, Vol. 1918 Issue 1, p1-11, 11p, 3 Color Photographs, 2 Charts, 7 Graphs |
| Abstrakt: |
In Mexico, around 33.600 tons of construction wastes are generated every day, Mexico City contributing for around 7.000 tons/day, with fewer than 1.000 tons/day being sent to be recycled. For that reason the purpose of this study was to manufacture sustainable bricks, based on three types of wastes generated in the building industry: wood cutting residues, wastes from the excavation process (From Coapa and Cuautlancingo, Puebla, Mexico) and recycled aggregates. Water was added as kneading material, and Opuntia ficus-indica (mucilage) was supplemented as natural additive to improve the workability of the mixtures. Conventional firing process was substituted by drying in a solar drying chamber. Nine mixtures were prepared using 62% excavation wastes, 4% wood cutting residues and 11%, 17% and 34% recycled aggregates. These mixtures were classified in two groups depending on their granulometry: the first one denominated cementitious recycled aggregates only having granulometry from 25.4 mm, 9.52 mm to 6.35 mm to fines and the second group denominated all in one recycled aggregates having granulometry of 6.35 mm to fines. The quality of the sustainable bricks was evaluated according to compressive strength and water absorption parameters. The results of nine mixtures showed that the reconstruction-bricks manufactured with the mixture seven consisting of 9.52 mm and 6.35 mm construction residues (all in one) fines presented the highest strength values, lowest maximum initial absorption (4 g/min) compared to the norm NMX-C-037- ONNCCE-2013 which establishes that the maximum limit for walls exposed to the outside is 5 g/min. Using a solar desiccator made from construction residues, the bricks were dried in 11 days, the maximum temperature was 76 °C and the maximum solar radiation captured was 733.4 W/m2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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