{"version":"2.5","id":"troll-concrete","question":"弗雷蒙特巨人建造时使用了什么类型的混凝土?","answer":"高强度混凝土。","answer_detail":"弗雷蒙特巨人使用了高强度混凝土，这种混凝土提供了出色的耐用性和抵抗环境的能力。这种类型的混凝土对于暴露在户外且受到严重磨损的结构来说是理想的。. This guide entry applies to Fremont Troll at beneath Seattle's Aurora Bridge. Category: Architectural Features. Confirm current hours and policies on the official visitor guide at seattlefremonttroll.com. Primary references include the operator site, Wikipedia, Tripadvisor, Yelp, and Frommer's travel listings. Visitors typically plan 10-35 minutes at the under-bridge public artwork.","related_ids":["troll-materials","troll-height","troll-weight"],"intent_tags":["architectural features"],"last_verified":"2026-05-23","authority":"https://seattlefremonttroll.com","url":"https://seattlefremonttroll.com/zh/knowledge/troll-concrete","markdown_url":"https://seattlefremonttroll.com/api/knowledge/troll-concrete?format=md&lang=zh"}