PSI - Issue 10

I. Karatasios et al. / Procedia Structural Integrity 10 (2018) 211–218

218

I. Karatasios et al. / Structural Integrity Procedia 00 (2018) 000 – 000

8

Overall, the modification of pure cement binder (e.g. RM1, RM6) offers the best choice for designing an adhesive mixture with optimum porosity/adhesion strength ratio. Moreover, the linear correlation provided in Fig.2 could be used for estimating the adhesion strength based of the mixture, based on three-point bending strength values. Moreover, it is exhibited that the 4-point flexural strength depends primary to the 3-point flexural strength rather than the compressive strength of the mortars. Thus, high compressive strength values shouldn‟t be the main requirement adhesion/join mortars.

Acknowledgements

The authors would like to thank the personnel of the Archaeological Ephorate of Piraeus for their collaboration and the data provided.

References

Alvarez de Buergo, M., Fort, R., Gomez-Heras, M., 2004. Contributions of scanning electron microscopy to the assessment of the effectiveness of stone conservation treatments. Scanning 26, 41-47. Bieniawski, Z.T., 1989. Engineering rock mass classifications: a complete manual for engineers and geologists in mining, civil, and petroleum engineering, John Wiley & Sons. Bosiljkov, V., Page, A., Bokan-Bosiljkov, V., Zarnic, R., 2003. Performance based studies of in-plane loaded unreinforced masonry walls. Masonry International 16, 39-50. Courard, L., Piotrowski, T., Garbacz, A., 2014. Near-to-surface properties affecting bond strength in concrete repair. Cement and Concrete Composites 46, 73-80. EN 1015-3:1999. Methods of test for mortar for masonry. Determination of consistence of fresh mortar - (by flow table). EN 12407:2007. Natural stone test methods. Petrographic examination. EN 1926:2006. Natural stone test methods - Determination of uniaxial compressive strength. EN 1936:1999. Natural stone test methods. Determination of real density and apparent density and of total and open porosity. EN 196-1:2005. Methods of testing cement: determination of strength. Ingham, J.P., 2013. Geomaterials Under the Microscope, Academic Pres. Isebaert, A., Van Parys, L., Cnudde, V., 2014. Composition and compatibility requirements of mineral repair mortars for stone: a review. Construction and Building Materials 59, 39-50. Lindqvist, J.E., 2009. Repair mortars for historic masonry. Testing of hardened mortars, a process of questioning and interpreting. Materials and Structures 42, 853-865. Ramos, N.M.M., Simoes, M.L., Delgado, J.M.P.Q., de Freitas, V.P., 2012. Reliability of the pull-off test for in situ evaluation of adhesion strength. Construction and Building Materials 31, 86-93. RILEM, 1980: Recommended tests to measure the deterioration of stone and to assess the effectiveness of treatment methods / Tentative Recommendations, RILEM Commission 25- PEM. Matériaux et Constructions 13(75), 175 -253. Sadowski, Ł., Mathia, T.G., 2016. Multi-scale metrology of concrete surface morphology: Fundamentals and specificity. Construction and Building Materials 113, 613-621. Szemerey-Kiss, B., Torok, A., 2017. Failure mechanisms of repair mortar stone interface assessed by pull-off strength tests. Bulletin of Engineering Geology and the Environment 76, 159-167. Vasconcelos, G., Lourenco, P.B., 2009. Experimental characterization of stone masonry in shear and compression. Construction and Building Materials 23, 3337-3345.

Made with FlippingBook - professional solution for displaying marketing and sales documents online