| 摘要 |
PROBLEM TO BE SOLVED: To provide an adjustment method of possible time for concrete leveling work that allows sufficient time to be secured for actual concrete leveling work even when forecasted leveling work time is short.SOLUTION: An adjustment method of possible time for concrete leveling work includes: a measurement step in which an amount of bleeding water generated from concrete immediately after casting and conductivity of the concrete are measured; a forecasting step in which ending time of the bleeding water generation is forecasted based on the amount of bleeding water generated, before starting time of falling of the conductivity; a clarification step in which possible time for leveling work is clarified based on the forecasted ending time of the bleeding water generation and the measured starting time of falling of the conductivity; and a spraying step in which a retardant for retarding concrete hardening is sprayed on a surface of the concrete at a timing suited to the starting time of falling of the conductivity, in the case where the possible time for leveling work that has been clarified falls below a range of possible time for leveling work determined based on a prescribed condition for the construction work.SELECTED DRAWING: Figure 1 |
