FLUIDITY TESTING DEVICE FOR SEDIMENT, AND FLUIDITY TEST METHOD FOR SEDIMENT

摘要

PROBLEM TO BE SOLVED: To provide a fluidity testing device for sediment and a fluidity test method for sediment capable of performing fluidity evaluation suitable for pump pressure feeding, evaluating quantitatively fluidity of the sediment, and readily predicting and evaluating ground supporting force.;SOLUTION: As test preparation, a sample 29 is filled in a cylindrical container 3 having an open face on the upper face, and the upper surface of the sample is smoothed to be substantially flat. A penetrant 5, having a dropping plate 7 which is a penetrating plate penetrating the container 3, is fixed to the container 3, and a weight 21 is installed on a weight-holding member 23. Then, a test is started by making the penetrant 5 loaded by the weight 21 to fall freely into the container 3. When the penetrant 5 is dropped, the dropping plate 7 penetrates the container 3, while involving the sample 29 from a clearance 55 between the container 3 and the dropping plate 7 or from a space 53 of the dropping plate 7. In the test, displacement (final penetration amount) at the penetration finish time is measured by using a displacement gauge, and the relation between the final penetration amount and the weight of the weight 21 is plotted on a criterion graph, to thereby evaluate the fluidity of the sample 29.;COPYRIGHT: (C)2008,JPO&INPIT