MORTAR COMPOSITION FOR SECTIONAL RESTORATION WITH LIGHT WEIGHT AND RAPID HARDNESS AND METHOD FOR SECTIONAL-RESTORING CONCRETE

摘要

The present invention relates to a mortar composition for sectional restoration, having light weight and rapid hardness. The composition comprises: a 15-35 wt% of Portland cement; 5-10 wt% of alumina cement or calcium sulfuraluminate cement; 1-5 wt% of gypsum; 1-5 wt% of silica fume; 1-5 wt% of slag or 3-15 wt% of fly ash; 0.1-2 wt% of mica; 0.05-0.5 wt% of water-reducing agent; 1-5 wt% of moisture acid powder resin; 0.5-5 wt% of wollastonite; 0.1-0.5 wt% of synthetic resin; 1-5 wt% of functional mixing agent; 30-60 wt% of quartz sand; 10-15 wt% of lightening agent; and 2.25-5 wt% of hardening accelerator.