INORGANIC MENDING MATERIAL FOR STONE CULTURAL HERITAGE

摘要

The present invention relates to inorganic repair material for stone cultural assets for repairing a damaged part of stone forming stone cultural assets, and more particularly, to inorganic repair material for stone cultural assets, wherein the repair material is manufactured using a magnesium oxide-based inorganic binder having excellent physical properties relating to strength and durability instead of cement usually used as a binder and the repair material includes a filler for more enhancing physical properties and durability of the repair material. Additionally, the present invention can obtain the effects of: not occurring a blackening phenomenon or a whitening phenomenon since the binder of the inorganic repair material for stone cultural assets is formed with the inorganic binder including a magnesium oxide having low possibility of occurring a pollution phenomenon; more enhancing physical properties and durability of the inorganic binder by the filler included along with natural silica sand included in a compounding agent; and, in particular, being eco-friendly since the magnesium oxide-based inorganic binder has cement-like properties through an ion bond of metal-nonmetal ions, not polycondensation reactions such as geopolymer, such that an alkali activator is not additionally needed and pH concentration of the surface thereof is lower compared with the concentration of cement. [Reference numerals] (AA) 7 days; (BB) 14 days; (CC) 28 days; (DD) 56 days; (EE) Cement; (FF) Lime; (GG) Mineral+red clay; (HH) Mineral+fly ash; (II) Mineral+wollastonite; (JJ) Mineral+blast furnace slag; (KK) Mineral+chamotte; (LL) Mineral+silica fume0.1; (MM) Mineral+silica fume0.2