Abstract
Concretes are modified with polymers in order to improve their durability and adhesive strength. However, polymer-modified cementitious materials exhibit lower elastic moduli and higher viscous and plastic deformations in comparison to unmodified systems. The macroscopic properties are governed by microstructural changes in the binder matrix, which consists of both cementitious and polymer components. Herein, different pure polymer specimens and microstructured polymers were characterized using specific load tests and nanoindentation in order to better understand the microscopic origin of the macroscopic deformation behavior and ultimately the mechanical properties of PCC. The link between the micromechanical and macroscopic properties is established using a continuum micromechanics approach. Multiscale models aiming at the prediction of the deformation behavior of polymer-modified cementitious materials are developed with input parameters that are partially obtained from the experimental investigations. The comparison of the modeling results with the experimentally determined deformations is satisfactorily good, underlining the predictive capability of the modeling approach. The improvement of prediction models is crucial for the application of PCC for construction purposes and will encourage their integration into guidelines.
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References
Dimmig, A. (2002). Einflﺰsse von Polymeren auf die Mikrostruktur und die Dauerhaftigkeit kunststoffmodifizierter Mrtel (PCC), PhD Dissertation, Bauhaus-Universität Weimar, Germany, 2002.
Swamy, R. N. (1995). Durability properties concrete composites with polymers. 8th international congress of polymers in concrete (pp. 21–34). Oostende.
Bode, K. A. (2008). Untersuchungen zu den kohäsiven und adhäsiven Eigenschaften von PCC (Doctoral dissertation, Dissertation). Bauhaus-Universität Weimar.
Dimmig-Osburg, A. (2005). New model for the formation of the microstructure of polymer-modified mortar. BFT, 10, 27–36.
Beeldens, A., & Van Gemert, D. (2004). Integrated model of microstructure building in polymer cement concrete. In 11th international congress on polymers in concrete (pp. 1–10). Berlin.
Lohaus, L., & Anders, S. (2004). Effects of polymer modification on the mechanical and fracture properties of high and ultra-high strength concrete, 11th international congress on polymers in concrete (pp. 183–190). Berlin.
Mangat, P. S. (1982). Creep characteristics of polymer modified concrete under uniaxial compression. 3rd international congress on polymers in concrete (pp. 193–208). Koriyama.
Vandamme, M., Ulm, F.-J., & Fonollosa, P. (2010). Nanogranular packing of CSH at substochiometric conditions. Cement and Concrete Research, 40(1), 14–26.
Nemecek, J., Kralik, V., & Vondrejc, J. (2013). Micromechanical analysis of heterogeneous structural materials. Cement and Concrete Composites, 36, 85–92.
Sebastiani, M., Moscatelli, R., Ridi, F., Baglioni, P., & Carassiti, F. (2016). Highresolution high-speed nanoindentation mapping of cement pastes - Unravelling the effect of microstructure on the mechanical properties of hydrated phases. Materials & Design, 97, 372–380.
Vandamme, M., & Ulm, F.-J. (2013). Nanoindentation investigation of creep properties of calcium silicate hydrates. Cement and Concrete Research, 52, 38–52.
Wang, R., Lackner, R., & Wang, P.-M. (2011). Effect of styrene-butadiene rubber latex on mechanical properties of cementitious materials highlighted by means of nanoindentation. Strain, 47, 117–126.
Velez, K., Maximilien, S., Damidot, D., Fantozzi, G., & Sorrentino, F. (2001). Determination by nano-indentation of elastic modulus and hardness of pure constituents of Portland cement clinker. Cement and Concrete Research, 31(4), 555–561.
Zaoui, A. (2002). Continuum micromechanics: A survey. Journal of Engineering Mechanics, 128(8), 808–816.
Powers, T. C., & Brownyard, T. L. (1948). Studies of the physical properties of hardened portland cement paste. Research Laboratories of the Portland Cement Association Bulletin, 22, 101–992.
Pichler, B., & Hellmich, C. (2011). Upscaling quasi-brittle strength of cement paste and mortar: A multiscale engineering mechanics model. Cement and Concrete Research, 41(5), 467–476.
Acknowledgement
This research has been supported by the German Research Foundation (DFG) through Research Training Group 1462, which is gratefully acknowledged.
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Flohr, A., Göbel, L., Osburg, A. (2018). Microstructured Polymers and Their Influences on the Mechanical Properties of PCC. In: Taha, M. (eds) International Congress on Polymers in Concrete (ICPIC 2018). ICPIC 2018. Springer, Cham. https://doi.org/10.1007/978-3-319-78175-4_13
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DOI: https://doi.org/10.1007/978-3-319-78175-4_13
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