| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a block for pavement, which can exert a great effect of cooling heat of vaporization by virtue of water retentivity, while adequately having an effect of preventing splashes of water by virtue of water permeability. <P>SOLUTION: In this block for pavement which is constituted in such a manner that aggregate and a binder are mixed with water, dried and molded, the binder includes a 30-80 mass% blast-furnace-slag impalpable powder and a 20-70 mass% inorganic powder containing amorphous SiO<SB>2</SB>of 50 mass% or more, and a 3-49 pts.mass alkali irritant is added with respect to the blast-furnace-slag impalpable powder and inorganic powder of 100 pts.mass in total. In this case, preferably, the average grain size of the inorganic powder is 100μm or less, or the inorganic powder of less than 50% is substituted with a silty powder. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
