This standard covers the material requirements, manufacturing process, physical properties, and testing methods for precast terrazzo tiles used in flooring and paving. It specifies dimensional tolerances, water absorption limits, transverse strength, and abrasion resistance to ensure long-term durability and aesthetic consistency in heavy-traffic applications.
Specifies requirements for precast terrazzo tiles for flooring, covering materials, dimensions, and performance characteristics.
Quick Reference Values
Water absorption (Max)10%
Tolerance on length and breadth± 1 mm
Tolerance on thickness± 3 mm
Tolerance on flatness1 mm
Minimum wearing layer thickness (small chips)5 mm
Minimum wearing layer thickness (large chips)6 mm
Key Formulas
Water Absorption (%) = [(M2 - M1) / M1] * 100
Wet Transverse Strength (N/mm²) = (3 * P * L) / (2 * b * d²)
Practical Notes
The wearing layer must be properly compacted during manufacturing to minimize voids, reduce water absorption, and prevent pitting.
Proper curing is critical to prevent warping and ensure the wearing layer achieves the necessary hardness for grinding and polishing.
Ensure the sub-floor is perfectly leveled before laying; hollow spots beneath the tiles can lead to cracking under point loads.