| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the occurrence of water leakage by increasing bond strength between upper and lower lifts of a horizontal placing joint surface to reliably bond the upper and lower lifts of the horizontal placing joint surface. <P>SOLUTION: In this construction method, before a nonoperating period, lower one lift D1 of a horizontal placing joint surface is formed using rich-mix concrete 2 for the inside in stead of poor-mix concrete 1; after the nonoperating period, mortar m with a water-cement ratio equal to or lower than that of the rich-mix concrete 2 is leveled in a predetermined thickness on the horizontal placing joint surface S; and subsequently, upper one lift U1 of the horizontal placing joint surface is superposed after formed using the rich-mix concrete 2 for the inside in stead of the poor-mix concrete 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
