Grout
Property
Constituent
Resin
The liquid resin may be furan (no longer used due to the toxic component), epoxy, vinyl ester or other capable of forming chemical resistant grout when mixed with a suitable setting agent and filler
Filler
Resin may be silica, carbon, or other chemical resistant materials. Fillers may be supplied a separate component or can be combined as a premix with liquid resin and/ or setting agent.
Setting agents
Includes amines, polyamides, peroxides, acids, or other reactants. Setting agents may be supplied as a separate component to be incorporated into the resin and filler at the time of mixing or may be supplied as a constituent of the filler. [5]
Performance Standard
| Properties | Test Method | Passing Criteria |
| Linear Shrinkage | ANSI A 118.6: 1992 | =< 0.2% at 7 days |
| Water Absorption | ANSI A 118.6: 1992 | =< 10% immersion to dry |
| Compressive Strength | ANSI A 118.6: 1992 | >= 15 N/mm² at 28 days |
| Tensile Strength | ANSI A 118.6: 1992 | >= 2.4 N/mm² at 28 days |
| Flexural Strength | ANSI A 118.6: 1992 | >= 5.0 N/mm² at 10 days ( 3 days before demoulding + 7 days air cure) |
| Colour fastness | SS 301: 1985 | No colour change after 28 days os UV exposure |
Property Comparison between Cementitious and Epoxy grouting
| Hardness (D-Shore) | Wet density (kg/m³) | Compressive strength (MPa) | Tensile bond (MPa) | Thermal shock resistance (MPa) | |
| Cementitious + Latex | 70-100 | 1860-2100 | 24.13 | – | – |
| Epoxy | 80-120 | 1300-1700 | 52 | 9-11.7 | 7.6 |
Colour
The grouts shall be colour-fast and shall not be inconsistent throughout tiling work. Where colour grouts are required, the potential risk of staining shall be verified by applying grouts to a few tiles in small trial area. Coloured grouts shall be cleaned up promptly in accordance to manufacturer instruction, as they may be difficult to be removed from matt, unglazed, textured finished tiles.