Core TradesCâu 62 / 700
After stripping the forms from a concrete wall, the contractor finds voids with exposed coarse aggregate and no paste in several areas near the base. This honeycombing was MOST likely caused by:
a.Too much cement in the mix
b.Excessive curing water
c.Insufficient consolidation and/or a mix too stiff to flow around the rebar
d.Using an air-entraining admixture
Giải thích
Honeycombing is voids where mortar failed to fill between coarse aggregate particles, typically from poor vibration/consolidation, congested reinforcement, or a mix too stiff to flow. Excess cement or air entrainment does not create these voids, and curing water is applied after stripping.
Trích dẫn luật: 2025 CA Building Code, Chapter 19 (Concrete)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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