Ceramic floor tiles need an acrylic fortified thinset. The acrylic can be added as a liquid or can be already in the mix. There are premixed thinsets available on the market. These are not preferable since they are often not as strong.
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The cement used for fixing ceramic tiles is white cement or ordinary portland cement.
The white cement gives better bonding than the ordinary cement.
The use of white cement will not be economical when compared to ordinary cement.