Ceramic cement mixture and ceramic honeycomb with ceramic cement skin

A cement composition for application to a ceramic substrate, comprising:

• a first source of inorganic particles having a mean particle diameter <50 nm, wherein an amount of the first source of inorganic particles is about ≤15% (by dry weight);
• a second source of inorganic particles having a mean particle diameter of from about 50 nm to about 700 nm, wherein an amount of the second source of inorganic particles is from about 5% to about 15% (by dry weight);
• a third source of inorganic particles comprising inorganic particles in which at least 90% of the inorganic particles are retained by a mesh sieve having sieve openings <1 μm;
• an inorganic fibrous material, wherein an amount of the inorganic fibrous material is about ≤15% (based on dry weight);
• and
• a water-soluble organic binder,
• wherein the amount of at least one of the first source of inorganic particles or the inorganic fibrous material is greater than 0% (by dry weight).