Structural And Mechanical Properties Of Fly Ashes Blended Cement Paste

ISBN-13: 9783659489068 / Angielski / Miękka / 2013 / 196 str.

Mohanraj Kannusamy;Sivakumar Ganesan

Opis

The observed experimental results, after through various investigations suggest and confirm that 10% and 25% blending of all the two fly ashes (LC and HC) in OPC (composites) when used with distilled water have higher strength than DW control. But blends with SW (25%) and with LC fly ash alone have higher strength than DW control. When 10%, 25% and 40% of OPC is replaced by fly ash, the net compressive strength of composites at 180days with both DW and SW. From all the three percentage of fly ash composites, 25% fly ash composites of LC fly ash gives a higher amount of hydration product due to its pozzolanic reaction. The strength gain can be written in the order 25% > 10% > control > 40% for both water. In the case of HC fly ash, the composites with DW has higher values whereas with SW has slightly a lower value (only 3%) than the control. The SW composites containing 10% fly ash would be as good as that of control paste whereas 25% fly ash would be better than that of control paste. It is inferred that the replacement of low CaO fly ash (25%) in cement hydrated with sea water (in salinity 35% water) is free from sulphate attack.

O autorze

Mohanraj, KannusamyK. Mohanraj is Assistant professor in Physics, Manonmaniam Sundaranar University, Tamil Nadu, India since December 2009. He obtained his M.Sc and Ph.D degrees from Annamalai University in Materials Science. He has published several articles extensively in the areas of industrial waste materials, semiconductor thin films and nano materials.