Abstract
When exposed to attack by moisture, macroscopic defect-free materials (MDFs) undergo mass and phase changes. The nature of such changes was studied thermoanalytically. Attacked samples differ from non-attacked samples in the degradation of classical cement hydrates (TG, below 200°C) and calcium carbonate (TG, DTA, 550-650°C). Quantitative assessment favours the hypothesis of the impregnation/barrier effect due to the incorporation of polyphosphate glass into the structure of the MDFs. The identity of the thermal decomposition of attacked and non-attacked samples in the range 250-400°C demonstrates the resistance of cross-linked sections of polymer and clinker constituents to the effects of moisture.
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Drábik, M., Gáliková, L. & Zimmermann, P. Attack by Moisture on Advanced Cement-Based Macroscopic Defect-free Materials A Thermoanalytical Study. Journal of Thermal Analysis and Calorimetry 56, 117–124 (1999). https://doi.org/10.1023/A:1010143627735
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DOI: https://doi.org/10.1023/A:1010143627735