Contaminación ambiental y su influencia en las edificaciones. Estudios preliminares.

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Title:	Contaminación ambiental y su influencia en las edificaciones. Estudios preliminares.
Alternate Title:	Environmental pollution and its influence on the buildings. Preliminary studies.
Authors:	Valdés, Cecilia¹ cecilia.valdes@cnic.edu.cu, Corvo, Francisco² corvo@imre.oc.uh.cu, Pérez, Julia¹, Portilla, Carmen¹, Fernández, Dainerys¹
Source:	Revista CENIC Ciencias Quimicas. 2010 supplement, Vol. 41, Special section p1-8. 9p.
Subjects:	MOISTURE in building materials, ATMOSPHERIC nitrous oxide, DEGRADATION of steel, POLLUTION, GYPSUM
Abstract (English):	At present the existing environmental pollution also affect health, has also affected the surface degradation of the materials used in buildings. The old stone-built structures were locked in some urban areas with minimal or almost no industrial development. Today these buildings are located in highly urbanized and industrialized areas and the stone material, with which they were erected, is affected by chemical pollutants emitted by industries and the heavy road traffic. The Basilica Minor San Francisco de Asis and Convent seventeenth century and is located in Old Havana. This monument is located in urban-industrial-marine area and on the surface of the stone used in its construction, evidenced the formation of crusts and patinas as a result of pollution. Materials and Methods: In this paper we show the values of NO2 and sulphates monitored inside the building using passive sensors. On the other hand, was implemented and evaluated by Karsten Pipe, visual and microscopic observation an organic-based repellent to protect the stone surface. Results and Conclusions: The capacity of the products to decrease water access inside the stone was confirmed. Gypsum is the majority of the crust contaminant present in the stone surface. [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	En la actualidad la contaminación ambiental existente además de afectar la salud, ha incidido también en la degradación superficial de los materiales empleados en las edificaciones. Las estructuras antiguas construidas en piedra fueron enclavadas en zonas poco urbanizadas y con un mínimo o casi nulo desarrollo industrial. En nuestros días estos edificios están ubicados en zonas altamente urbanizadas e industrializadas y el material pétreo con el cual fueron erigidas, se encuentra afectado por los contaminantes químicos emitidos por las industrias y el abundante tráfico vial. El Convento y Basílica Menor de San Francisco de Asís data del siglo XVII y está enclavado en la Habana Vieja. Este monumento está situado en una zona urbano-marino-industrial y en la superficie del material pétreo empleado en su construcción, se evidencia la formación de costras y pátinas como consecuencia de la contaminación. En el presente trabajo se muestran los valores de NO2 y sulfatos monitoreados en el interior de la edificación mediante captadores pasivos. Por otra parte, fue aplicado y evaluado mediante la Pipa de Karsten, la observación visual y microscópica un hidrofugante en base orgánica empleado para la protección superficial de la piedra. Se demostró la capacidad del hidrofugante de disminuir el acceso de agua en la piedra de la edificación. El yeso es el contaminante mayoritario de la costra presente en la superficie pétrea. [ABSTRACT FROM AUTHOR]
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Database:	MedicLatina

Description
Abstract:	At present the existing environmental pollution also affect health, has also affected the surface degradation of the materials used in buildings. The old stone-built structures were locked in some urban areas with minimal or almost no industrial development. Today these buildings are located in highly urbanized and industrialized areas and the stone material, with which they were erected, is affected by chemical pollutants emitted by industries and the heavy road traffic. The Basilica Minor San Francisco de Asis and Convent seventeenth century and is located in Old Havana. This monument is located in urban-industrial-marine area and on the surface of the stone used in its construction, evidenced the formation of crusts and patinas as a result of pollution. Materials and Methods: In this paper we show the values of NO2 and sulphates monitored inside the building using passive sensors. On the other hand, was implemented and evaluated by Karsten Pipe, visual and microscopic observation an organic-based repellent to protect the stone surface. Results and Conclusions: The capacity of the products to decrease water access inside the stone was confirmed. Gypsum is the majority of the crust contaminant present in the stone surface. [ABSTRACT FROM AUTHOR]
ISSN:	10158553