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Efectos de la humedad en la calcita natural, aragonita y portlandita de las piedras de cal de construcción = Effects of moisture on natural calcite, aragonite and portlandite building limestones

Authors: Subramani, Supriya; Fernández, F.; Dos Santos, A.J.; Rio, M. del; López, O.;

Efectos de la humedad en la calcita natural, aragonita y portlandita de las piedras de cal de construcción = Effects of moisture on natural calcite, aragonite and portlandite building limestones

Abstract

ResumenEl norte de España contiene una amplia variedad de piedras calizas destinadas a su uso en la construcción, con diversas características morfológicas y variedades de color. La mayoría de las calizas están compuestas de aragonita, aunque tanto calcita, como portlandita también se encuentran presentes en diferentes áreas de Europa. Su coloración más común es amarilla, blanca o marrón transparente. Las rocas en disolución ricas en calcio, favorece la deposición de caliza, produciéndose importantes cambios digeneticos. En esta ponencia se discutirán cómo la exposición a la humedad afecta a las calizas. Elementos tales como calcio, oxígeno, hidrógeno y carbono han sido identificados mediante análisis de difracción de rayos-x. Las calizas, en forma de carbonato de calcio e hidróxido de calcio, se someten a un tratamiento térmico y se analizan su rango de descomposición. Se calcula el porcentaje de pérdida de peso con respecto a la temperatura. Los resultados pueden ser utilizados por diseñadores de nuevos materiales y ayudar a desarrollar nuevos productos basados en calcita y con mejores propiedades técnicas.AbstractNorth Spain contains a wide range of morphological and varieties of natural color limestones. Most of the limestones are composed of aragonite, but calcite and portlandite are also found in different areas of Europe. Their most common color is attractive transparent yellow, white and brown. Calcium rich dissolution rocks favors limestone deposition and produce important digenetic changes. In this paper we will discuss how digenesis modifies properties by exposing it in moisture. The elements such as calcium, oxygen, hydrogen and carbon were identified in power x-ray diffraction studies. The limestone known as calcium carbonate and calcium hydroxide is subjected to heat treatment and its decomposition range is analyzed. The percentage of weight loss with respect to temperature is calculated.

Keywords

Technology, Building construction, phase transformation, análisis térmico, x-ray techniques, T, estudio de Rayos-X, thermal properties, Análisis térmico, Phase transformation, propiedades térmicas, X-ray techniques, piedras calizas naturales, estudio de rayos-x, TH1-9745, thermal analysis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
Green
gold