Core TradesCâu 6 / 700
Which curing method retains moisture in fresh concrete by forming a sealing film on the surface after finishing?
a.Ponding water on top of a flat slab
b.Covering the surface with continuously wet burlap
c.Fogging the surface with a fine water spray
d.Spraying a liquid membrane-forming curing compound
Giải thích
A liquid membrane-forming compound leaves a thin film that seals in mix water so hydration continues. Ponding, wet burlap, and fogging all cure by adding external water rather than sealing the surface.
Trích dẫn luật: 2025 CA Building Code (CBC) Chapter 19 (Concrete)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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