Beklenti ve ZıtlıkSoru #10032
While ancient Roman concrete endured millennia of corrosive seawater exposure along harbor piers, ----.
- A)modern Portland cement structures often experience severe steel rebar corrosion within several decades
- B)modern marine engineers have completely replicated volcanic ash pozzolan formulations
- C)antique harbor breakwaters collapsed immediately after their inaugural dedication ceremonies
- D)seawater was proven to contain zero chemical salts capable of reacting with calcium silicates
- E)Roman engineers exclusively utilized wooden timber frameworks without any mineral mortar
Cevabı ve çözümü göster
Doğru cevap: A) modern Portland cement structures often experience severe steel rebar corrosion within several decades
Çözüm: "While" zıtlığı: Roma betonu deniz suyunda binlerce yıl dayanırken, modern betonarmeler birkaç on yılda demir korozyonuna uğrar. Doğru cevap A'dır.