| Title |
Properties of High-strength and Carbonation of Concrete Used Overseas Cement in East Asia |
| Authors |
Lee Sung-Bok ; Jee Nam-Yong |
| Keywords |
Overseas cement ; High-strength concrete ; Superplasticizer ; Carbonation ; Durability |
| Abstract |
Recently, the importation of overseas cement has been increasing and the spot materials of different quality from Japan have to be treated in overseas construction work for technical cooperation with neighboring countries. However, a study on the quality of those overseas materials has not yet been carried out systematically, especially cement among those materials. Accordingly, in this study the properties of high-strength concrete with overseas cement imported from four countries in East Asia were investigated under normal and high temperature condition, including the carbonation of normal-strength concrete under normal temperature. As a result, it is found that the required strength of high-strength concrete will be expected regardless of temperature condition when the flowability is ensured by selecting the appropriate superplaticizer and dosage of it, and the carbonation rate of normal-strength concrete with overseas cement is approximately the same as that with Japanese one under the condition of the same compressive strength. |