CEMENT-BASED COMPOSITION WITH LIGHT WEIGHT AND FLAME RETARDANT PERFORMANCE FOR 3D PRINTING EXTERIOR MATERIAL

摘要

The present invention relates to a cement-based composition for 3D printing. The purpose of the present invention is to manufacture a lightweight fire resistant exterior panel for construction with less deterioration of strength at a high temperature and even with excellent lightweight properties by solving a problem in which fire resistant performance is significantly deteriorated by a re-emulsifying powder resin essentially used in a 3D printing method. The cement-based composition for 3D printing of the present invention comprises: 20-60 wt% of cement; 5-20 wt% of fly ash; 15-40 wt% of silica sand; powder of 15-40 wt% of lightweight hollow silica; and 1-10 wt% of ethylene vinyl chloride.;COPYRIGHT KIPO 2020