What is the main component of the matrix in set silicate cement?

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Hydrated aluminium phosphateHydrated aluminium phosphate combined with calcium fluorideHydrated aluminosilicate gelHydrated aluminium phosphate crystals with calcium fluoride aluminosilicate gel

Explanation

The primary constituent of the set silicate cement matrix is hydrated aluminium phosphate, which forms the essential binding phase. Other options include variations with calcium fluoride or aluminosilicate gels, but the fundamental matrix component is hydrated aluminium phosphate.