| 摘要 |
PURPOSE:To readily produce a specimen in a short time without requiring an accelerator or wet screening, etc., in placing a fresh concrete in the field and enable the measurement of compressive strength of the concrete. CONSTITUTION:A fresh concrete 2 is filled in a frame mold 1 capable of penetrating microwaves therethrough and the frame mold 1 is then placed in a pressure vessel 4, which is simultaneously placed in a microwave oven 5 to heat the fresh concrete 2 from the interior in a state of a high temperature and pressure to produce the objective specimen. |
