| Title |
A Study on Strength of Cement Mortar with Micro Grinding High Volume Fly-Ash |
| Keywords |
Micro Grinding ; Fly-Ash ; Fineness ; |
| Abstract |
The purpose of this study is for the active use of the fly ash, which is a by-product of the combustion pulverizes coal thermal power plants, to compensate for the lack of landfill and for conservation of energy, by using fly ash as the supplementary cementitious material, and to prove its possibility as the related products of the cement.
First of all, the ordinary fly ash is grinded in a special method and its fineness is controlled from 6000cm2/g to 8000cm2/g, then replaced it with the 10% to 80% of the cement mortar in order to test physical properties.
The first experiment conducts on the strength development in fly ash replacing content and fineness. and the changes of the flow values, incorporating fly ash into cement. The second one is about the slow development of the strength of the fly ash mortar in early ages, and improves its strength with the activator Na2SO4, using a large amount of fly ash. |