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Abstract

Research & Development in Material Science

Portland Cement Mortar Carbonation Assessment by Using Blue Timol Indicator

  • Open or Close Esteban Estévez1, Miguel Angel Sanjuán2* and Cristina Argiz3

    1Department of Cement Chemical Testing, Polytechnic University of Madrid, Spain

    2Department of Cement and Mortar, Spanish Institute of Cement and its Applications, Spain

    3Senior Lecturer of Chemistry of Building Materials, Polytechnic University of Madrid, Spain

    *Corresponding author: Miguel Angel Sanjuán, Department of Cement and Mortar, Spanish Institute of Cement and its Applications (IECA), C/ José Abascal 53, Madrid-28003, Spain

Submission: March 24, 2018;Published: March 28, 2018

DOI: 10.31031/RDMS.2018.05.000605

ISSN: 2576-8840
Volume5 Issue1

Abstract

This work investigated the performance of Portland cement mortars with regard to the carbonation resistance. Mortars were made with a Portland cement with 62,2% ground granulated blast-furnace slag and cured under water for one, two, three, seven, 14 and 20 days. Normally, testing for natural carbonation is made by using a phenolftalein indicator solution; however, in this study a blue timol indicator was chosen. Carbonation rate after one year of natural exposure increases with decreasing curing time under water. Also, it increases when ground granulated blast-furnace slag content in mortars increase.

Keywords: Carbonation; Ground granulated blast-furnace slag; Portland cement; Blue timol indicator

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