MORTAR COMPOSITION CONTAMINATED WITH EXPANDED PERLITE

摘要

PROBLEM TO BE SOLVED: To provide a mortar composition contaminated with expanded perlite as a light aggregate excellent in adiabaticity and strength and capable of relatively easily being manufactured.SOLUTION: In a mortar composition by mixing cement and fine aggregate containing expanded perlite and fly ash, the expanded perlite is an expanded perlite by heating and expanding obsidian grain body produced by pulverizing Ajimu-produced obsidian raw stone having patchy pattern structure where small grain body of glassy obsidian produced in Oita prefecture, Ajimu district is solidified with relief shape to grain shape, has a grain size by a sieve classification of 5 mm or less, a unit volume mass of 0.1 g/cmor more and 0.3 g/cmor less, an average pore rate of 70 vol.% or more and 76 vol.% or less and a heat conductivity of 0.068 W/mK or more and 0.075 W/mK or less.SELECTED DRAWING: Figure 1