| 摘要 |
PURPOSE:To improve the curing efficiency, save energy and secure the required strength by forming a part or a front section of a site of a mold being in contact with concrete in the form of a double structure and feeding a heat developing substance or a heating medium as the minimum required in compliance with the thickness and volume of respective sites of a product into a space. CONSTITUTION:For example, a mold of block 1 for a U-shaped side gutter is divided into, for example, mold sections 2, 12, 4 and 3 formed by dividing the outer side face and the inner peripheral face of a standing section into two, upper and lower respectively, and a mold section 5 of the lower face of a bottom wall section, and the divided sections are formed into a double structure provided with hollow sections 11 respectively. Heating medium injection openings 13 and discharge openings 14 are formed on respective mold sections 2-5 and 12 to feed the heating medium. For supplying the heat for accelerating curing, the method of filling the spaces 11 with a heat developing material (agent), the method of flowing the heating medium such as high pressure vapor, or hot air, hot water or oil or making the same remaining in, the method of filling water, oil or the like and heating by electric heat or the like can be applied selectively and properly. The curing temperature is adjusted in compliance with the thickness and volume of respective sites. |
