protective concrete layer

基本解釋

Secondly , protective layer thickness is too thin to protect concrete reinforced bar and reduce durability.
保護層厚度不夠?qū)е落摻钔饴兑痃n蝕，降低了橋梁的耐久性；
The calculation method about the minimum lining thickness of concrete protective layer is given in the cold region.
提出了寒區(qū)混凝土防護層渠道最低襯砌厚度的計算方法。
To evaluate the full-span durability life of reinforced concrete structure, the expanding process of corrosive crack in protective layer concrete is studied in this paper.
爲了對鋼筋混凝土結(jié)搆的耐久性全壽命進行評估，研究了保護層混凝土鏽脹裂縫的擴展及過程。