Modified cement tile adhesive and grout

A cement-based tiling composition comprising:

• a premixed cementitious formulation comprising;
• a first filler in an amount of about 40 to 60 wt. %,
• a cement slurry in an amount of about 35 to less than 50 wt. %, the cement slurry comprising an aluminous cement slurry or a calcium aluminate cement slurry,
• cellulose ether in an amount of about 0 to 0.45 wt. %,
• defoamer in an amount of about 0 to 0.1 wt. %,
• polymer fibers in an amount of about 0 to 2 wt. %,
• a second filler being a recycled light weight filler in an amount of about 0 to 15 wt. %,
• biocide in an amount of about 0 to 0.02 wt. %,
• clays and/or thickeners in an amount of about 0 to 1 wt. %,
• redispersible polymer powder in an amount of about 0 to 10 wt. %,
• superplasticizers in an amount of about 0 to 2 wt. %, and
• an activator solution that destabilizes the premixed cementitious formulation by increasing the pH thereof to provide the cement-based tiling composition, the cement-based tiling composition suitable for use as an adhesive or a grout for tiling.