Indicator of carbonation front in concrete as substitute to phenolphthalein
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http://hdl.handle.net/10045/62517
Title: | Indicator of carbonation front in concrete as substitute to phenolphthalein |
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Authors: | Chinchón Payá, Servando | Andrade, Carmen | Chinchón Yepes, Servando |
Research Group/s: | Advanced deveLopment and empIrical research on Software (ALISoft) | Materiales y Sistemas Constructivos de la Edificación |
Center, Department or Service: | Universidad de Alicante. Departamento de Construcciones Arquitectónicas | Universidad de Alicante. Instituto Universitario del Agua y las Ciencias Ambientales |
Keywords: | Carbonation | Concrete | Mortar |
Knowledge Area: | Construcciones Arquitectónicas |
Issue Date: | Apr-2016 |
Publisher: | Elsevier |
Citation: | Cement and Concrete Research. 2016, 82: 87-91. doi:10.1016/j.cemconres.2015.12.010 |
Abstract: | A method to substitute the recognized toxic phenolphthalein in mortars and concretes is proposed. It comprises putting a portland cement sample in contact with an innocuous solution, curcumin-based, which acts as an indicator yielding a red color in areas where there is alkaline reserve (pH ~ 12) and yellow in carbonate zones (pH ≤ 9). Solutions containing curcumin extracted from commercial turmeric powder and from the rhizomes of the turmeric plant were prepared by using ethanol as a solvent. Subsequently it has been experienced with solutions in which curcumin has been used with a purity of over 95%. The dissolution of curcumin can be used with the same reliability as phenolphthalein in the carbonation process with the advantage that it is safe and presents no health risks. |
Sponsor: | The research was conducted with the support and funding from CH3 Analytics. |
URI: | http://hdl.handle.net/10045/62517 |
ISSN: | 0008-8846 (Print) | 1873-3948 (Online) |
DOI: | 10.1016/j.cemconres.2015.12.010 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2016 Elsevier Ltd. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/j.cemconres.2015.12.010 |
Appears in Collections: | INV - ALISoft - Artículos de Revistas INV - MSCE - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2016_Chinchon_etal_CemConRes_final.pdf | Versión final (acceso restringido) | 1,34 MB | Adobe PDF | Open Request a copy |
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