CONCRETE RE-VIBRATION CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To control concrete re-vibration timing based on a penetration resistance value.SOLUTION: Test concrete of a predetermined composition is installed and measurement tests for bleeding and penetration resistance value of the test concrete are performed in a predetermined time schedule starting from the installation. Time from the installation until bleeding water discharge is completed is determined based on a result of the bleeding measurement test. A range of the penetration resistance values corresponding to this time is determined as a re-vibration possible range based on a result of the penetration resistance value measurement test. Penetration resistance value measurement test is performed for the concrete of the predetermined composition that has been installed on site. When the penetration resistance value obtained from the penetration resistance value measurement test is within the re-vibration possible range, re-vibration of the concrete is determined to be possible.SELECTED DRAWING: Figure 1