| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water-retentive cement molding where particularly for example supplied water is absorbed internally, held and evaporated from a surface. <P>SOLUTION: The water-retentive cement molding 10 includes porous bodies 14 and the rising of surface temperature is suppressed by evaporating water absorbed internally and held from the surface 12. First capillary parts to hold water in a pF range of 2.7-4.2 are formed innumerably in the water-retentive cement molding 10. In the first capillary parts, a first to a third void 20, 22, 24 are formed properly and continuously. Water held in the first capillary parts is easily spread on the surface 12 and supplied quickly on the surface 12 and then the whole surface 12 on the water-retentive cement molding 10 is kept at a spread state of water to be a thin film. As the first capillary parts to hold water in the pF range of 2.7-4.2 are prepared, water held internally can be supplied suitably on the surface and the superior suppressing effect of surface temperature rising can be exhibited. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
