Evaluation of self-compacting mortars containing microsilica, zeolite and superabsorbent polymer in fresh and hardened state

Document Type : Research Paper

Authors

1 Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran.

2 International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran

10.22124/jcr.2023.22460.1584

Abstract

A more accurate understanding of the characteristics of self-compacting mortars, which have wide applications in construction projects, is essential. Today, extensive studies are conducted in this field. In the present study, the effect of two pozzolans, microsilica and zeolite, as well as the addition of superabsorbent polymer 1 (SAP) was studied in order to measure their effects on self-compacting mortar. In this research, 17 mixing plans were made with different percentages of additives. In this research, 17 mixing plans were made with different percentages of additives. Mortar setting speed test, heat of hydration, as well as compressive strength and electrical resistance tests were performed at different ages. The results showed that samples containing microsilica compared to zeolite showed a significant improvement in quality. With economic analysis, it was found that high percentages of SAP significantly increase the construction cost. Also, in the software analysis of durability, the use of 10% by weight of silica fume instead of cement resulted in an increase in useful life up to 86 years.

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