http://hdl.handle.net/2117/14152 Sat, 18 May 2013 17:30:06 GMT 2013-05-18T17:30:06Z webmaster.bupc@upc.edu Universitat Politècnica de Catalunya. Servei de Biblioteques i Documentació no http://hdl.handle.net/2117/19196 Title: Carbonation of ternary building cementing materials Authors: Fernández Carrasco, Lucía; Torrens Martín, David; Martínez Ramírez, Sagrario Abstract: The carbonation processes of ettringite and calcium aluminate hydrates phases developed by hydration of calcium aluminate cement, fly ash and calcium sulphate ternary mixtures have been studied. The hydrated samples were submitted to 4% of CO2 in a carbonation chamber, and were analysed, previous carbonation and after 14 and 90 days of carbonation time, by infrared spectroscopy and X-ray diffraction; the developed morphology was performed with the 14 days carbonated samples. The results evidenced that ettringite reacts with CO2 after 14 days of exposition time and evolves totally at 90 days; the developed hydrated phases C3AH6 in samples with major CAC content, also reacts with CO2. Due to carbonation, calcium carbonate – mainly vaterite but also aragonite-, depending on the initial formulation, aluminium hydroxide and gypsum were detected. Tue, 14 May 2013 10:07:32 GMT http://hdl.handle.net/2117/19196 2013-05-14T10:07:32Z Fernández Carrasco, Lucía; Torrens Martín, David; Martínez Ramírez, Sagrario no CAC, Calcium sulphate, Carbonation, Ettringite, Fly ash The carbonation processes of ettringite and calcium aluminate hydrates phases developed by hydration of calcium aluminate cement, fly ash and calcium sulphate ternary mixtures have been studied. The hydrated samples were submitted to 4% of CO2 in a carbonation chamber, and were analysed, previous carbonation and after 14 and 90 days of carbonation time, by infrared spectroscopy and X-ray diffraction; the developed morphology was performed with the 14 days carbonated samples. The results evidenced that ettringite reacts with CO2 after 14 days of exposition time and evolves totally at 90 days; the developed hydrated phases C3AH6 in samples with major CAC content, also reacts with CO2. Due to carbonation, calcium carbonate – mainly vaterite but also aragonite-, depending on the initial formulation, aluminium hydroxide and gypsum were detected. http://hdl.handle.net/2117/18957 Title: Recycling silicon solar cell waste in cement-based systems Authors: Fernández Carrasco, Lucía; Ferrer, R.; Aponte Hernández, Diego Fernando; Fernández, P. Abstract: This is a study of the recycling of crystalline solar cells by incorporating them in cement matrices. The hydration process of a mixture of calcium aluminate cement (CAC) and solar photovoltaic cell waste was researched and analyzed. The nature of the hydration products of various compositions of these mixtures was evaluated at a temperature of 20 1C by analyzing the samples through X-ray diffraction, infrared spectroscopy and scanning electron microscopy. The total porosity and mechanical strength development of these materials were also determined. It was revealed that the presence of a solar cell residue of up to 5% in the cement matrices does not result in new hydration products that are different from those derived from the normal hydration of the CAC cement. Moreover, the material developed can be considered as an expansive cement blend because it releases H2 at early stages. The presence of waste causes a decrease in the mechanical strength and an increase in the total porosity of this material, but it can be used for applications such as thermal insulation Tue, 23 Apr 2013 12:39:32 GMT http://hdl.handle.net/2117/18957 2013-04-23T12:39:32Z Fernández Carrasco, Lucía; Ferrer, R.; Aponte Hernández, Diego Fernando; Fernández, P. no Solar cells, Silicon, Recycling, New applications, Building This is a study of the recycling of crystalline solar cells by incorporating them in cement matrices. The hydration process of a mixture of calcium aluminate cement (CAC) and solar photovoltaic cell waste was researched and analyzed. The nature of the hydration products of various compositions of these mixtures was evaluated at a temperature of 20 1C by analyzing the samples through X-ray diffraction, infrared spectroscopy and scanning electron microscopy. The total porosity and mechanical strength development of these materials were also determined. It was revealed that the presence of a solar cell residue of up to 5% in the cement matrices does not result in new hydration products that are different from those derived from the normal hydration of the CAC cement. Moreover, the material developed can be considered as an expansive cement blend because it releases H2 at early stages. The presence of waste causes a decrease in the mechanical strength and an increase in the total porosity of this material, but it can be used for applications such as thermal insulation http://hdl.handle.net/2117/18601 Title: Hacia sistemas y productos más arquitectónicos, constructivos e industriales Authors: Pons Valladares, Oriol Thu, 04 Apr 2013 10:49:04 GMT http://hdl.handle.net/2117/18601 2013-04-04T10:49:04Z Pons Valladares, Oriol no http://hdl.handle.net/2117/16990 Title: Pabellon JUKBUIN. El trenzado triaxial como sistema constructivo. Authors: Sastre Sastre, Ramon; Soriano Botella, Enrique; Tornabell Texidor, Josep Wed, 21 Nov 2012 16:28:42 GMT http://hdl.handle.net/2117/16990 2012-11-21T16:28:42Z Sastre Sastre, Ramon; Soriano Botella, Enrique; Tornabell Texidor, Josep no http://hdl.handle.net/2117/16420 Title: El PVC en la arquitectura textil Authors: Sastre Sastre, Ramon Tue, 04 Sep 2012 09:04:17 GMT http://hdl.handle.net/2117/16420 2012-09-04T09:04:17Z Sastre Sastre, Ramon no