| Title |
An Experimental Study on the Characteristics of Microporous Structure Formation by Curing Condition of Cement and Blast Furnace Slag Composite |
| Authors |
Park Cheol ; Jung, Yeon-Sik ; Seo, Chee-Ho |
| DOI |
https://doi.org/10.5659/JAIK_SC.2017.33.12.63 |
| Keywords |
Blast Furnace Slag Powder ; Curing Environment ; Gel Pore ; Capillary Pore ; Carbonation |
| Abstract |
When industrial by-products like slag and fly ash are using in concrete with cement, it improves strength and durability against external deterioration factors by densifying the structure through potential hydraulic and pozzolanic reaction. But it has been pointed out that high dependence on the quality variation and the curing condition using a admixure material for concrete. In this study, the characteristics of internal micropore structure according to curing condition were analyzed for pastes and mortar specimens under using blast furnace slag powder. As a result, the variation of compressive strength and the internal microstructure were observed according to curing conditions by binder type. Particularly, using blast furnace slag powder, decrease in compressive strength were clearly observed in indoor and carbonation curing compared with water curing. The pore structure analysis also clearly observed the decrease of the gel pore existing in the CSH hydrate layer and the increase of the capillary pore in indoor and carbonation curing compared with water curing condition |