台灣地區使用卜作嵐材料對海砂混凝土之成效

The Effectiveness of Integrating the Pozzolans into the Sea-Sand Concrete in Taiwan

台灣屬於海域環境及溫度異常地區，因此特別突顯混凝土設計時考量耐久性的重要性，且河川砂石嚴重缺乏之際，如何利用卜作嵐材料抑制海砂混凝土之硫酸鹽侵蝕將更形重要。本研究係以台灣濱海地區含有海砂／海水之混凝土對結構物造成腐蝕及破壞情況，及以本土化之卜作嵐材料（如飛灰、爐石等）應用於添加具有海砂或海水之混凝土時產生防止腐蝕之效果作研究，期能建立完整的資料庫，藉以防範台灣地區鋼筋混凝土日益嚴重的腐蝕問題。結果顯示適量的添加卜作嵐材料於海砂（水）混凝土時具有抑制硫酸鹽侵蝕的良好效果。

As Taiwan is of subtropical areas with variant temperatures and great humid, the durability is regarded as an important factor for concrete designing. And, how to control the corrosion of the sea-sand concrete is also crucial due to lack of the river sand today. This research is to study the corrosive condition of the constructions on the Taiwan seashore, made by sea sand/salty water concrete or more with the pozzolans such as fly ash. It's expected to establish a complete database for future improvement of the corrosive problems which is getting worse in Taiwan day by day. The result shows the appropriate addition of the pozzolanic materials in the sea-sand /salty water concrete is able to retrain the sulfate attack.