Print Email Facebook Twitter W/C ratio estimation of concrete through optical microscopy, electron microscopy and thermogravimetric analysis Title W/C ratio estimation of concrete through optical microscopy, electron microscopy and thermogravimetric analysis Author Garzon Amortegui, Juan Felipe (TU Delft Civil Engineering and Geosciences) Contributor Copuroglu, Oguzhan (mentor) Schlangen, E. (graduation committee) Gard, W.F. (graduation committee) Degree granting institution Delft University of Technology Programme Civil Engineering | Structural Engineering Date 2018-09-25 Abstract W/C is a fundamental parameter for concrete mix design, it defines the properties in the fresh and hardened state as well as the durability of the material. Nevertheless, once the concrete has hardened, it is very difficult to estimate the W/C in the original mix design, so far only 2 methodologies has been accepted as a standards. Because of this, the aim of the research is to use 4 methodologies, circular polarization microscopy (CPL), thermogravimetric analysis (TGA), UV light microscopy and scanning electron microscopy (SEM) + Powers and Brownyard approach to estimate the W/C of different concrete samples from a Round Robin Test done by the Applied Petrography Group (APG). The results showed that all the techniques have a correlation with the W/C. The CPL on its own and in combination with the UV light can be a feasible technique to estimate this value. Furthermore, since there were several techniques, it was decided to choose which one gave the best results using three guidelines, representativeness, reproducibility and reliability. The technique with the highest score was the combination of CPL+UV light. Subject Optical microscopyElectron microscopythermogravimetric analysisW/C ratio estimationConcrete petrography To reference this document use: http://resolver.tudelft.nl/uuid:db9f1a5d-2c3e-4f9f-bf61-6124978a337d Part of collection Student theses Document type master thesis Rights © 2018 Juan Felipe Garzon Amortegui Files PDF Juan_Garzon_Thesis.pdf 63.91 MB Close viewer /islandora/object/uuid:db9f1a5d-2c3e-4f9f-bf61-6124978a337d/datastream/OBJ/view