| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a measuring instrument for unit water quantity of ready-mixed concrete which is compact and which does not become a large-scaled system, and capable of easily measuring the unit water quantity of ready-mixed concrete on a casting site, at low cost. <P>SOLUTION: The unit water quantity measuring instrument 1 of ready-mixed concrete includes an air meter 2 for measuring the amount of air in a sample collected from ready-mixed concrete and a computer 3, in which a computer program for an estimation equation of unit water quantity is stored and computes the unit water quantity in the ready-mixed concrete by the computer 3, on the basis of the measured amount of air in the sample; the independently measured mass of the sample; and the mixture of the ready-mixed concrete. An iPod Touch 14 is used as the computer 3. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
