| Title |
A Feasibility Analysis of Rapid Acquisition Test for Cement Fineness using Hydrometer |
| Authors |
Han, Cheon-Goo ; Kim, Young-Tae |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.6.29 |
| Keywords |
Cement fineness ; Hydrometer ; Acquisition inspection ; Ready-mixed concrete plant |
| Abstract |
In this research, regarding the cement supplied to ready mixed concrete plant, the feasibility of rapid acquisition test for cement fineness using hydrometer which used for early strength evaluation of concrete was analyzed. Additionally, regarding the rapid test with hydrometer control factors were provided. As a result of analysis, quality control using hydrometer was possible with the regressive equation obtained in five minute between density of suspension and fineness of cement powder. As the control factors, dispersing admixture, replacing kerosene as a medium, and temperature of cement and water were evaluated. According to the control factor evaluation, the tap water was optimum as a medium and calibration of keeping the temperature of water to 20 °C or correction factor was needed for density results. Finally, it is considered that the suggested rapid quality evaluation method using hydrometer is cheaper and easier method than currently used Blaine test. |