| Autor: |
Reddy, M. Vijay Sekhar, Ramana Reddy, I. V., Ravi Kumar, C. M. |
| Předmět: |
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| Zdroj: |
IUP Journal of Structural Engineering; Apr2013, Vol. 6 Issue 2, p38-52, 15p, 8 Charts, 6 Graphs |
| Abstrakt: |
The paper presents the effects of using different pozzolanic materials as a partial cement replacement material in mortar mixes. This work is based on an experimental study of mortar made with 43 grade Ordinary Portland Cement (OPC) and 12% of OPC partially replaced by different cement replacement materials such as Fly Ash (FA), Rice Husk Ash (RHA) and silica fumes in mortar mixes. The mechanical properties of control cement mortar, FA mortar, RHA mortar and silica fumes mortar were tested to determine the effect of these materials on mortar properties. Mortar specimens were cured in water for 28 days, through which compression strength was tested at ages 3, 7 and 28 days, while tensile strength and flexural strength were determined at age 28 days. Then the rest of the specimens were immersed in fresh water and solutions of 10% sodium sulfate (Na2SO4) and 10% magnesium sulfate (MgSO4) for a period of 3 months. Through this period, the specimens were tested for compressive strength at 1, 2 and 3 months to investigate their durability. The obtained results show that the compressive strength, tensile strength, flexural strength and also durability of the mortar containing FA and RHA and silica fume were better than that of the control cement mortar and the silica fume was the best pozzolan used in this research. It was also found that magnesium sulfate has a more severe effect on the durability when compared with sodium sulfate [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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