FILL MATERIAL FOR VOID PART IN EMBANKMENT AND FILLING CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a fill material capable of being injected into an embankment part by a one-shot method, and a filling construction method.;SOLUTION: The fill material for void parts in an embankment contains cement, bentonite, calcium aluminate, gypsum, a setting modifier and water, has a flowability of 9-12 seconds in a P-funnel test for a duration of 30 minutes since the fill material is kneaded, has 40-90 minutes hardening time and is used by the one-shot method. The setting modifier contains organic acids and alkali metal carbonates. The bentonite of 25-10 parts mass is used based on 75-90 parts mass of the cement and the gypsum of 50-200 parts mass is used based on 100 parts mass of the calcium aluminate. When the fill material, which contains cement, bentonite, calcium aluminate, gypsum, the setting modifier and water, is packed in the void part in the embankment part by the one-shot method, the filling construction method is executed while recognizing that the fill material has a flowability of 9-12 seconds in a P-funnel test for the duration of 30 minutes since the fill material is kneaded and has 40-90 minutes hardening time.;COPYRIGHT: (C)2014,JPO&INPIT