Abstract
The purpose of this study is to find appropriate polymer-modified repair mortars for polymer lining process in deteriorated sewage treatment structure. The polymer-modified repair mortars are prepared with polymer-binder ratio of 0%, 10%, and 20%; ground-granulated blast-furnace slag (BFS) contents of 0%, 25%, and 50%; fly ash (FA) contents of 0%, 10%, and 20%; and an antifoamer content of 3% and tested for strengths, adhesion, drying shrinkage, and sulfate resistance. It is concluded from the test results that the redispersible polymer powder (RPP)-modified repair mortars with BFA and FA cause improvements in its sulfate resistance, depending on the polymer-binder ratio. The properties of the RPP-modified mortars are satisfied with the KS (Korean Standard) F 4042 quality requirements. However, the RPP-modified repair mortars using BFS and FA require its improvement in strength.
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References
Ohama, Y., Demura, K., & Kim, W. K. (1994). Properties of polymer-modified mortars using redispersible polymer powders. In Proceedings of the first East Asia symposium on polymers in concrete (pp. 81–90). Chuncheon.
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Korean Standard Association (2017). Korean Standard F 4042(Polymer-modified cement mortar for maintenance in concrete structure). Seoul, Korea.
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This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2016935934).
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Kim, W., Hong, S. (2018). Evaluation of Polymer-Modified Restoration Mortars for Maintenance of Deteriorated Sewage Treatment Structures. 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_92
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DOI: https://doi.org/10.1007/978-3-319-78175-4_92
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