Title: An environmental impact causal model for improving the environmental performance of construction processes Authors: Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Forcada Matheu, Núria; Macarulla Martí, Marcel; Roca Ramon, Xavier Abstract: Despite the increasing efforts made by the construction sector to reduce the environmental impact of their processes, construction sites are still a major source of pollution and adverse impacts on the environment. This paper aims to improve the understanding of construction-related environmental impacts by identifying on-site causal factors and associated immediate circumstances during construc- tion processes for residential building projects. Based on the literature and focus group fi ndings, we have developed a construction-related Environmental Impact Causal Model consisting of a process-oriented causal network of thirty-nine environmental impacts, forty- fi ve causal factors and over two hundred causal relationships. It is intended to contribute to a reduction in construction-related environmental impacts on building sites by supporting contractors and other decision-makers in the early identi fi cation of factors that are likely to lead to impacts or to exacerbate their consequences, as well as the later environmental performance evaluation and control. The causal model is validated by investigating over a hundred environmental incidents. Finally, possible methods to improve construction-related environ- mental performance are suggested.

Title: Relationship between binder and mixture damage resistance at intermediate and low temperatures Authors: Clopotel, Cristian S.; Velasquez, Raul; Bahia, Hussain U.; Pérez Jiménez, Félix Edmundo; Miró Recasens, José Rodrigo; Botella Nieto, Ramón Abstract: The importance of binder performance on the mixture response to accelerated fatigue loading and thermal cracking was investigated. Binder’s fatigue performance was measured by means of the Linear Amplitude Sweep test (LAS) while fatigue properties of the mixtures were investigated by performing the EBADE test. The low temperature properties of the binders were investigated by measuring the glass transition temperature and fracture properties with the Single Edge Notched Beam (SENB) test. The mixtures fracture properties were investigated using the FENIX test. The experimental matrix for this study included unmodified and rubber-modified binders and limestone aggregates. A good correlation between binder and mixture fracture energy was observed at low temperatures. This good correlation indicates the importance of fracture response of the binder to the overall low temperature cracking performance of the mixture. Experimental results suggest that a significant part of the variation of the fracture energy of the mixture can be explained by the binder fracture properties. Good correlations were also obtained for the displacement at maximum load in the SENB and Fenix tests. Similar accelerated fatigue response for binders and mixtures were observed when the stresses and strains were normalized. Significant reduction in the stress happened at about the same normalized strain in the binder and mixture. It can be seen that the mixture has remaining strength after reaching peak stress probably due to the aggregate structure.

Title: Fira del Coneixement 2013 (curt) Authors: Grau Vilalta, Maria Dolors; Font Soldevila, Josep

Title: Exposició "La esfera del agua" Authors: Grau Vilalta, Maria Dolors; Font Soldevila, Josep

Title: Exposició "Maquetes d'arquitectura" Authors: Grau Vilalta, Maria Dolors; Font Soldevila, Josep

Title: Efecte de l'addició d'àrids lleugers a morters de protecció passiva contra el foc formulats amb subproductes de magnesi Authors: Bachs Oliver, Pol; Formosa Mitjans, Joan Abstract: En aquest estudi es pretén contribuir a la millora de la formulació dels morters de protecció passiva del foc (PPF) formulats amb subproductes de magnesi, prèviament desenvolupats pel grup de recerca en el que s’emmarca aquest treball. Aquesta millora es realitza mitjançant l’addició d’àrids lleugers com la vermiculita i la perlita. Aquests àrids lleugers pretenen disminuir la densitat del morter resultant, per permetre el seu possible ús com a morters projectats. Un aspecte molt important a tenir en compte a part de la densitat, és el relacionat amb les propietats mecàniques. Tot i que no cal un elevat valor de resistència mecànica és d’interès avaluar l’efecte que els àrids lleugers produeixen sobre aquestes propietats, així com sobre el comportament al foc dels morters. Aquest estudi es divideix en 3 grans blocs. La primera part correspon als antecedents sobre la formulació de morters amb subproductes de magnesi. La segona part consisteix en la caracterització de tots els components de la formulació dels morters, per poder entendre el comportament final del morter de PPF. I la tercera part, principalment experimental, consisteix en la preparació i anàlisi de provetes de morters amb subproductes, que incorporen diferents percentatges dels àrids lleugers. S’ha analitzat el comportament al foc de mostres de morters amb diferents percentatges d’addició d’àrids lleugers. Això ha permès establir l’àrid lleuger que presenta millors resultats i la millor proporció d’addició. La incorporació d’àrids lleugers ha resultat ser eficaç, reduint notablement la densitat dels morters, i obtenint un bon compromís pel que fa al comportament a elevades temperatures i a les propietats mecàniques.

Title: Prácticas de embarque en el M/N Ruiloba Authors: Navarrete García, Marc

Title: Trabajo de embarque del remolcador Montfort : Complements de formació Authors: Pérez Fernández, César

Title: Seguiment de les obres d'ampliació del parc del Putget de Barcelona Authors: Artigas Alentà, Ester Abstract: El projecte tracta de fer el seguiment d’unes obres que vaig portar com a cap d’obra a l’empresa AMBITEC (empresa de jardineria filial d’ACSA SORIGUÉ) per a Parcs i Jardins de Barcelona. Les obres van tenir per objecte executar la urbanització dels terrenys situats enfront al carrer Manacor, inicialment destinats a zona de bosc forestal i utilitzat com aparcament improvisat, per a convertir aquests en una zona de parc accessible. L’àmbit d’actuació d’aquestes obres va ser d’una àrea del Parc del turó del Putget, d’aproximadament 1,15 Ha. El VOLUM I d’aquest projecte s’ha subdividit en dos capítols principals: - Capítol 1: es fa una breu introducció personal, de l’empresa AMBITEC i es descriuen les feines realitzades com a cap d’obra a l’inici, durant i al final de l’obra. - Capítol 2: s’explica l’evolució de l’obra amb text, imatges i plànols. El VOLUM II: ANNEXES, s’hi ha adjuntat un resum dels documents realitzats per mi durant l’execució de l’obra, o al final d’aquesta. Com a tret a destacar en l’aplicació de mesures ambientals, es va fer una selecció de residus de les runes generades, i es van triturar amb una trituradora de grans dimensions. La maxtaca generada es va estendre per tongades en el talús posterior del parc, i sobre d’ella es va estendre per tongades les terres sobrants del moviment de terres, generant un talús que va ajudar a salvar el fort desnivell que hi havia entre la zona central del parc i la zona forestal. Es van cubicar 3.810m3 de terres. D’aquesta manera es va aconseguir reproduir el perfil original que tenia la muntanya a principis de segle, ja que va ser dinamitada pels alemanys per tal de fer un hospital, que finalment no es va construir. Aquest forat a la muntanya era conegut al barri com el “violadero del Putget”. S’explicarà la gran problemàtica que va suposar fer una obra de tal envergadura en un espai tant reduït, i de morfologia tant abrupta. Amb l’afegit de la mala accessibilitat al parc a través de carrers estrets, per on no passaven camions grans ni grues de gran tonatge, imprescindibles per als trasplantaments de grans arbres i el moviment de materials de construcció en les zones més altes del parc. Un altre aspecte interessant d’aquesta execució d’obra, va ser l’aprofitament de tots els residus nets resultants dins la mateixa obra, oferint un exemple de construcció sostenible.

Title: Experimental validation of hydrogen sulphide removal from biogas using biotrickling process at pilot plant level Authors: Mesa Garcia, Cristian Abstract: Within the framework of sustainable development, and ever-increasing energy costs, wastewater treatment operators focus on developing on-site energy production: the main approach today is via sewage biogas. In most cases, H2S removal is necessary to meet the requirements of the energy conversion equipment inlet requirements (for cogeneration motors around 300 – 500 ppm, but for fuel cells around 1ppm or below). Therefore to optimise the overall energy and economic balance, it is necessary to dispose of efficient and cost-effective biogas treatments, amongst which biological treatments have promising prospects for H2S removal. A biogas-powered SOFC pilot plant was constructed in a Waste Water Treatment Plant (WWTP) (January 2009) in Spain and was operated until the end of the project (June 2012). The pilot plant treats 10 Nm3/h biogas and produces both electricity and heat in a high efficient way. The BIOCELL project (funded by the LIFE+ program of the European Commission, LIFE07 ENV/E/000847) is one of the few demonstration projects that studies biogas applications in SOFC. The following project tried to review the state of the art of removal H2S biological technologies and summarized the experience gathered from the biotrickling filter of the BIOCELL project. The biogas treatment was designed to reach the inlet requirements of the fuel cell. H2S was identified as the main biogas pollutant and it causes severe and rapid degradation of fuel cell stacks. Examples of industrial biogas treatment units coupled to fuel cells consisting of a main H2S removal stage followed by a final H2S polishing system proved to be successful, thus this was the strategy implemented in the BIOCELL project. In particular, a biotrickling filter was installed as it is one of the most interesting technologies for the main removal because of its low operating costs compared to other physical – chemical treatments. On the other hand, adsorption-based systems (iron oxides + biogas drying + activated carbon) were chosen for biogas polishing as they are the only technology which can reduce the concentration of contaminants to the stringent extent of fuel cell’s specifications. The biotrickling filter was operated for more than 12 months. The operating conditions were optimized to temperature 30ºC, pH 1.5 and residence time > 100 seconds. Over the long term and under these conditions, it showed a removal efficiency of 70% and an availability of 80% because of progressive filter clogging due to elemental sulphur accumulation. Operational expenses were calculated at 0,5 – 1 c€/Nm3. This report includes operational guidelines and recommendations for re-design. To sum-up, this report shows the conclusions of the biogas treatment technologies from BIOCELL project, which shows that are ready to meet fuel cell inlet requirements for long periods of time at a reduced cleaning cost.

Title: Treball d'embarcament al buc Verónica B Authors: Pons Fernández, Denis

Title: Buque Zurbarán: Trabajo de embarque Authors: Solé Parra, Mònica Sheila

Title: Prácticas de embarque en el RO/RO Super-Fast Levante Authors: Pulido Rosa, Eduardo

Title: Trabajo de embarque del remolcador Montfort Authors: Pérez Fernámdez, César

Title: RO-PAX "Zurbaran" Authors: Cano Viván, Ramon

Title: Prácticas en barco Authors: Garcia Gutierrez, Mario

Title: Buque OPDR Canarias : Trabajo prácticas en buque Authors: Azón Lluch, Sergio

Title: Montbrió : Trabajo de embarque Authors: Andreu Palau, Sonia

Title: Ammoniun removal from wastewater by liquid-liquid membrane contactors Authors: Alcaraz Segura, Aurora Abstract: Removal of ammonia from wastewater generated in a waste treatment plant by a membrane contactor was studied at lab scale. The treated wastewater will be applied in the Hydrogen and Oxygen production by electrolysis via renewable energies. The aim of this study relies on fulfill the process requirements in the electrolysis, since the water used in the electrolysis process must be almost pure water due to efficiency process of Hydrogen and Oxygen production decreases with the ions in the dissolution. The residual ammonium concentration of the aqueous stream feeding the membrane distillation step ranging between 1 to 5 ppm is not removed and arrives to the electrolysis step generating an increase in the conductivity. So the use of a liquid-liquid membrane contactor is proposed to reduce ammonium (NH+4) concentration before membranes distillation step. The experimental set-up was performed by a contactor (Liqui-cel X30 HF (Celgard, USA)) which works in close and open loop mode configuration. In close circuit, it was used a tank of 10 liters to storage ammonium solution and in open circuit it was used 25 liters as initial ammonium volume. A pump (Cole Parmer instrument) was used to feed the contactor from the tank. An aqueous ammonium solution with a low concentration is in the inner side of the membrane contactor (Lumen) and sulphuric acid solution goes in the outside of the membrane contactor (Shell). The pH plays a very important role in the chemical equilibrium; for that reason is motorized during the experiments. On the other hand, it has been carried out the simulation of a mathematical model used by various authors to validate the experimental results by COMSOL Multiphysics program

Title: Cadet training on board M/Y Lady Allison Authors: Aguilar Ruiz, Ariadna