| Title |
Rapid Evaluation Method for Blast Furnace Slag Fineness and Influence of Fineness on Properties of Cement Mortar |
| Authors |
Han, Cheon-Goo ; Joo, Eun-Hee |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.5.13 |
| Keywords |
Blast furnace slag powder ; Fineness ; Hydrometer ; Quality evaluation ; Acquisition inspection ; Ready-mixed concrete plant |
| Abstract |
In this research, regarding the type three blast furnace slag (BS) regulated by KS F 2563 and supplied to actual ready mixed concrete plant, the fineness on specification and actually measured fineness by Blain test were compared, and by applying the hydrometer method used for early prediction of concrete strength, the feasibility of the hydrometer method for acquisition inspection of BS was analyzed. Additionally, the influence of various fineness of BS on properties of cement mortar was also assessed. According to the experimental results of this research, correlation of fineness values between specification and actually measured data were not matched. In the case of the rapid evaluation method using hydrometer, a good relation was shown between the fineness data obtained from hydrometer and Blain test. furthermore, from the cement mortar properties test, there was a good relation was obtained between fineness data from rapid evaluation method by hydrometer and cement mortar properties, while there was no clear relation between fineness data from specification and cement mortar properties. Hence, as a qulity controlling method of BS fineness, a rapid evaluation method using hydrometer is suggested as a new method. |