Determination of Polymer Type and Content in Concrete Materials by FTIR and TGA

Abstract:

Polymers are commonly used in concrete materials. The type and concentration of polymer are important information for stakeholders, because they have a critical impact on the properties of concrete materials. Therefore, reliable and accurate information is highly desirable. To this end, Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA) are used to analyze polymer contents in construction materials. FTIR spectroscopy is a suitable technique to identify the polymer type using IR spectrum matching. Additionally, functional group information can be easily obtained from each peak. Attenuated Total Reflection (ATR) method can be used to measure extracted polymers from construction materials to obtain IR spectra, and match against the library database to identify the polymer materials. TGA is one of the common thermal analysis methods. It measures the weight loss or gain of sample due to chemical reactions such as vaporization, decomposition and oxidation as a function of temperature. In this paper, we will discuss development of reliable analytical methods with which mixtures of polymer, fine aggregate and cement with different percentages of polymer content were prepared and evaluated.

• Periodical: Advanced Materials Research (Volume 1129)
• Pages: 151-158
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1129.151
• Online since: November 2015
• Authors: Takako Tokura, Joyce Lim, Ai Ming Chua, Wey Liang Lee, James Wong
• Keywords: FTIR, Partial Least Squares, Polymer Concrete Materials, Polymer Content, Polymer Type, TGA

References

[1] W.M. Lee, J.P. Lu, Determination of Polymer Type and Content in Polymer Concrete Materials by FTIR and TGA , 7th Asia Symposium on Polymers in Concrete, 5-7, Oct 2012, Istanbul, Turkey, pp.481-490.

[2] Y. Ohama, Handbook of Polymer-Modified Concrete and Mortars, Noyes Publications, 1995, pp.31-32.

[3] ASTM E1131. Standard Test Method for Compositional Analysis by Thermogravimetry. Annual Book of ASTM Vol 14. 02, (1997).

[4] T. Tokura, J, Lim, A.M. Chua, M. Ohta, A. Naganishi, and S. Takeuchi, Analysis of Gaseous Products by DTA/TGA-FTIR System, Shimadzu Review 71(3-4) (2015) 129-133.