GROUND REINFORCEMENT COMPOSITION FOR REPAIRING SUBSIDENCE OF GROUND OF CULTURAL PROPERTY AND PREPARATION METHOD THEREOF

摘要

PURPOSE: A ground reinforcement composition for repairing the subsidence of the ground of cultural property and its preparation method are provided, to obtain the fluidity sufficient for pumping and ground strength of 70 kgf/cm2 or more even after a day from covering and to improve water permeability. CONSTITUTION: The ground reinforcement composition comprises a powered mixture and a liquid additive, wherein the powered mixture comprises 40-60 wt% of soil, 10-30 wt% of a cement mixture comprising quicklime and alumina cement in the ratio of 70-90:10-30 by weight, 10-30 wt% of a pozzolan-based mineral material, and 5-15 wt% of an -calcium sulfate hemihydrate, and the liquid additive comprises 1.0-2.4 wt% of zinc fluorosilicate added to the mixture in aqueous solution state with a concentration of 10-30 wt% and 0.7-1.5 wt% of a naphthalene-based superplasticizer added to the mixture in aqueous solution state with a concentration of 30-50 wt%.