Abstract
Superabsorbent polymer (SAP), which has absorption and desorption capabilities, promotes the internal curing effect when incorporated in cement mortar. The strength in cement mortar/concrete improved with the addition of Nano-silica. Hence, this study aims to examine the combined effect of SAP and Nano-silica on the durability properties of blended cement paste. Experimental investigations were performed to assess the durability were water absorption, Acid and sulfate attack test. The mix combination contains SAP 0.2 and 0.3% of cement content, and Nano silica ranging from 0.5 to 2% of cement content for each quantity of SAP was studied. The compressive strength showed a decrease in the increasing dosage of Nano-silica since an increase in Nano-silica reduced the workability and demanded more water. The durability test results show minimum weight loss after a long-term study. The results of the water absorption test for samples were assessed to be within the permissible limit. The results of compressive strength after the durability test show that there is a 30% loss of strength after the acid resistance test and 22.2% strength gain after sulfate attack.
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Loknath, S., Renuka, S.M., Umarani, C. (2023). Effect of Superabsorbent Polymer (SAP) and Nano Silica on the Durability Properties of Blended Cement Paste. In: Marano, G.C., Rahul, A.V., Antony, J., Unni Kartha, G., Kavitha, P.E., Preethi, M. (eds) Proceedings of SECON'22. SECON 2022. Lecture Notes in Civil Engineering, vol 284. Springer, Cham. https://doi.org/10.1007/978-3-031-12011-4_79
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