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A contractor is installing ceramic tile in a commercial kitchen. The substrate is a concrete slab. Which of the following is the most appropriate type of mortar to use for optimal bond strength and durability in this high-traffic, moisture-prone environment?
- AEpoxy mortar (ANSI A118.3)
- BType I organic adhesive (mastic)
- CThin-set portland cement mortar (ANSI A118.1)
- DMedium-bed mortar (ANSI A118.4)
Show answer & explanationAnswer & explanation
Correct answer: A. Epoxy mortar (ANSI A118.3)
Epoxy mortar (ANSI A118.3) is specifically designed for environments requiring superior chemical resistance, high bond strength, and impermeability, making it ideal for commercial kitchens. While thin-set is common, epoxy offers enhanced performance for this demanding application.
Why the other options are wrong
- B. Organic adhesives are not suitable for wet areas or heavy traffic and lack the strength required for commercial kitchens.
- C. Thin-set portland cement mortar is a general-purpose mortar but does not offer the same chemical resistance or high bond strength as epoxy for commercial kitchens.
- D. Medium-bed mortar is used for large format tiles or uneven substrates but doesn't inherently provide the chemical resistance needed for kitchens.
Epoxy Mortar
A two-part or three-part mortar system consisting of epoxy resins, hardeners, and often inert fillers, known for its exceptional chemical resistance, high bond strength, and impermeability.
- Ideal for demanding environments like commercial kitchens, laboratories, and industrial floors.
- Offers superior resistance to acids, alkalis, and oils.
- Provides high compressive and tensile strength, reducing cracking and delamination.
Memory trick: Kitchen's chemical chaos needs an Epoxy shield.