| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoch-making method of producing porous concrete by which the porous concrete having many pores and having high water permeability and air permeability is simply and surely produced. SOLUTION: A forming frame body 3 having a liquid passing hole 3a through which a hardening agent 2 is passed on the bottom part is used and the porous concrete (a) having a prescribed shape is formed by housing many granular materials 1 such as small stones or gravel in the forming frame body 3, supplying the hardening agent 2 in the forming frame body 3 or housing the mixture of many granular materials 1 with the hardening agent 2 in the forming frame body 3, and hardening and joining many granular materials 1 by the hardening agent 2 while discharging the excess hardening agent 2 from the liquid passing hole 3a of the forming frame body 3 by one's own weight. COPYRIGHT: (C)2008,JPO&INPIT
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