1- 點解我地一般都係用concrete structure 而唔用steel structure
除左concrete平d 同埋 多變性 之外 仲有咩因由????
2- 係極寒ga天氣下 steel 會變得脆D 咁concrete 會唔會
如果會 咁一般 用 concrete structure 好d 定steel structure ??
同埋why??
steel & concrete
2011-12-13 12:38 am
回答 (2)
2011-12-13 12:19 pm
✔ 最佳答案
其實 concrete structure 同 steel structure 各有好處, 用邊樣設計就要睇有冇特別要求.concrete 除咗成本比較平同可以做出唔同形狀, 另外 concrete 比較易做, 如果用 steel 就要考慮運送問題, 因為唔係週圍都可以有供應商, concrete 就除時可以原地生產.
响極嚴寒嘅天氣基本上兩種 structure 都唔應該有問題, 因為幾凍都可以用 design 嘅方法攪惦, 但係興建就好唔同, 因為 concrete 要做 curing, 唔可以响太凍嘅環境下施工, 但 steel 就冇呢個問題.
2011-12-18 7:57 am
1.
durability, maintenance, and fire resistance are also the factors concerned.
2.
i guess it is no big deal if you are talking about around -40C to -50C. but if in the extreme conditions, the reaction of cement to water (should be ice) could be affected to form concrete.
durability, maintenance, and fire resistance are also the factors concerned.
2.
i guess it is no big deal if you are talking about around -40C to -50C. but if in the extreme conditions, the reaction of cement to water (should be ice) could be affected to form concrete.
收錄日期: 2021-04-23 21:53:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111212000051KK00367