3 research outputs found
Safety-centric and Smart Outdoor Workplace: A New Research Direction and Its Technical Challenges
Despite the fact that outside is becoming the frontier of indoor workplaces,
a large amount of real-world work like road construction has to be done by
outdoor human activities in open areas. Given the promise of the smart
workplace in various aspects including productivity and safety, we decided to
employ smart workplace technologies for a collaborative outdoor project both to
improve the work efficiency and to reduce the worker injuries. Nevertheless,
our trials on smart workplace implementation have encountered a few problems
ranging from the theoretical confusion among different stakeholders, to the
technical difficulties in extending underground devices' lifespan. This
triggers our rethinking of and discussions about "smart workplace". Eventually,
considering the unique characteristics of outdoor work (e.g., more
sophisticated workflows and more safety-related situations than office work),
we argue that "safety-centric and smart outdoor workplace" deserves dedicated
research attentions and efforts under the umbrella discipline of smart
environment. In addition, the identified technical challenges can in turn drive
different research dimensions of such a distinguishing topic.Comment: 14 page
Factibilidad técnica del uso de escorias de cobre como reemplazo de arena en morteros de pega de muros de albañileria
Chile is one of the largest generators of copper slags (CS) worldwide with around 50 million tons accumulated. As the CS have similar physicochemical characteristics to the raw materials of cement, their application in the production of sustainable mortars for use in masonry walls is very attractive. The objective of the present article is to study the technical feasibility of the use of CS as sand replacement in cement mortars of masonry walls. For that, their properties and characteristics are compared in laboratory with a standard mortar (without CS). Different properties of the cement mortar are analyzed, such as consistency, density, flexural and compressive strength, and adhesive strength. Moreover, its influence on the compressive and shear strength of confined masonry elements is also analyzed. The results show that the incorporation of CS in masonry mortars has a positive influence, increasing the adhesive strength (20.2%), compressive strength (18.1%) and shear strength (12%). Therefore, for the conditions analyzed, the use of cement mortars with CS in confined masonry walls is technically feasible.Chile es uno de los mayores generadores de escorias de fundición de cobre (EFC) a nivel mundial con alrededor de 50 millones de toneladas acumuladas. Debido a que las EFC poseen caracterÃsticas fisicoquÃmicas similares a las materias primas del cemento, resulta atractivo utilizar la EFC para la producción de morteros de pega sustentables para su uso en muros de albañilerÃa. De esta manera el objetivo del presente artÃculo es estudiar la factibilidad técnica de morteros de pega fabricados con un árido fino obtenido a partir de la combinación de arena y granalla de EFC para su utilización en muros de albañilerÃa confinada. Esto se realiza comparando en laboratorio sus propiedades y caracterÃsticas con respecto a un mortero patrón (sin EFC). Se analizan propiedades del mortero de pega, tales como la consistencia, densidad, resistencia a la compresión, resistencia a la flexión y resistencia a la adherencia; además de su influencia en la resistencia a la compresión y al corte de muros de albañilerÃa confinada. Los resultados muestran que la incorporación de la EFC en morteros de pega para muros de albañilerÃa tiene una influencia positiva, ya que se incrementan significativamente las resistencias de adherencia (20,2%), resistencia a la compresión (18,1%) y resistencia al corte (12%). De esta manera, se concluye que para las condiciones analizadas, utilizar de morteros de pega con EFC en muros de albañilerÃa confinada es la técnicamente factible
Factibilidad técnica del uso de escorias de cobre como reemplazo de arena en morteros de pega de muros de albañileria
Chile is one of the largest generators of copper slags (CS) worldwide with around 50 million tons accumulated. As the CS have similar physicochemical characteristics to the raw materials of cement, their application in the production of sustainable mortars for use in masonry walls is very attractive. The objective of the present article is to study the technical feasibility of the use of CS as sand replacement in cement mortars of masonry walls. For that, their properties and characteristics are compared in laboratory with a standard mortar (without CS). Different properties of the cement mortar are analyzed, such as consistency, density, flexural and compressive strength, and adhesive strength. Moreover, its influence on the compressive and shear strength of confined masonry elements is also analyzed. The results show that the incorporation of CS in masonry mortars has a positive influence, increasing the adhesive strength (20.2%), compressive strength (18.1%) and shear strength (12%). Therefore, for the conditions analyzed, the use of cement mortars with CS in confined masonry walls is technically feasibleChile es uno de los mayores generadores de escorias de fundición de cobre (EFC) a nivel mundial con alrededor de 50 millones de toneladas acumuladas. Debido a que las EFC poseen caracterÃsticas fisicoquÃmicas similares a las materias primas del cemento, resulta atractivo utilizar la EFC para la producción de morteros de pega sustentables para su uso en muros de albañilerÃa. De esta manera el objetivo del presente artÃculo es estudiar la factibilidad técnica de morteros de pega fabricados con un árido fino obtenido a partir de la combinación de arena y granalla de EFC para su utilización en muros de albañilerÃa confinada. Esto se realiza comparando en laboratorio sus propiedades y caracterÃsticas con respecto a un mortero patrón (sin EFC). Se analizan propiedades del mortero de pega, tales como la consistencia, densidad, resistencia a la compresión, resistencia a la flexión y resistencia a la adherencia; además de su influencia en la resistencia a la compresión y al corte de muros de albañilerÃa confinada. Los resultados muestran que la incorporación de la EFC en morteros de pega para muros de albañilerÃa tiene una influencia positiva, ya que se incrementan significativamente las resistencias de adherencia (20,2%), resistencia a la compresión (18,1%) y resistencia al corte (12%). De esta manera, se concluye que para las condiciones analizadas, utilizar de morteros de pega con EFC en muros de albañilerÃa confinada es la técnicamente factible