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隔離墩病害原因分析
隔離墩病害原因分析
Cause analysis of isolation pier disease
2.1 環境侵蝕：在雨雪導致的潮濕環境中，汽車尾氣中的二氧化硫等，在水的作用下侵蝕結構混凝土表層，造成結構混凝土由表及里的疏松、粉化——這就是我們經常見到的澆筑多年的混凝土表面粉化、疏松等現象的原因。
2.1 environmental erosion: in the humid environment caused by rain and snow, sulfur dioxide in automobile exhaust erodes the surface of structural concrete under the action of water, resulting in the looseness and pulverization of structural concrete from the surface to the inside. This is the reason why we often see the phenomenon of concrete surface pulverization and looseness after pouring for many years.
2.2 碳化反應：二氧化碳、水和混凝土中的氫氧化鈣結合生成溶于水的鈣化合物并從混凝土中濾出，破壞了混凝土的堿性環境，降低其PH值，導致混凝土對鋼筋的保護作用喪失，在潮氣、氧氣的作用下，導致鋼筋銹蝕。
2.2 carbonation reaction: carbon dioxide, water and calcium hydroxide in concrete combine to form calcium compound dissolved in water and leach out from concrete, which destroys the alkaline environment of concrete and reduces its pH value, resulting in the loss of the protective effect of concrete on reinforcement and the corrosion of reinforcement under the action of moisture and oxygen.
2.3 氯離子侵蝕：化冰鹽中的氯離子在潮濕的混凝土京純水設備 保定網站制作 排水槽模具模鍛件環境中，在鋼筋銹蝕的過程中起到催化劑的作用：其本身并不被消耗，但卻可以大大加速鋼筋的銹蝕速度，所以對鋼筋銹蝕的影響是持續且快速的。
2.3 chloride ion erosion: chloride ion in deicing salt acts as a catalyst in the process of reinforcement corrosion in wet concrete environment: it is not consumed, but it can greatly accelerate the corrosion speed of reinforcement, so the impact on reinforcement corrosion is continuous and rapid.
2.4 凍融破壞：水滲入混凝土內部，結冰膨脹，產生張力作用于混凝土，導致結構混凝土由表及里的破碎、脫落。
2.4 freeze thaw damage: water seeps into the concrete, freezes and expands, and produces tension acting on the concrete, resulting in the crushing and falling off of structural concrete from the outside to the inside
Cause analysis of isolation pier disease
2.1 環境侵蝕：在雨雪導致的潮濕環境中，汽車尾氣中的二氧化硫等，在水的作用下侵蝕結構混凝土表層，造成結構混凝土由表及里的疏松、粉化——這就是我們經常見到的澆筑多年的混凝土表面粉化、疏松等現象的原因。
2.1 environmental erosion: in the humid environment caused by rain and snow, sulfur dioxide in automobile exhaust erodes the surface of structural concrete under the action of water, resulting in the looseness and pulverization of structural concrete from the surface to the inside. This is the reason why we often see the phenomenon of concrete surface pulverization and looseness after pouring for many years.
2.2 碳化反應：二氧化碳、水和混凝土中的氫氧化鈣結合生成溶于水的鈣化合物并從混凝土中濾出，破壞了混凝土的堿性環境，降低其PH值，導致混凝土對鋼筋的保護作用喪失，在潮氣、氧氣的作用下，導致鋼筋銹蝕。
2.2 carbonation reaction: carbon dioxide, water and calcium hydroxide in concrete combine to form calcium compound dissolved in water and leach out from concrete, which destroys the alkaline environment of concrete and reduces its pH value, resulting in the loss of the protective effect of concrete on reinforcement and the corrosion of reinforcement under the action of moisture and oxygen.
2.3 氯離子侵蝕：化冰鹽中的氯離子在潮濕的混凝土京純水設備 保定網站制作 排水槽模具模鍛件環境中，在鋼筋銹蝕的過程中起到催化劑的作用：其本身并不被消耗，但卻可以大大加速鋼筋的銹蝕速度，所以對鋼筋銹蝕的影響是持續且快速的。
2.3 chloride ion erosion: chloride ion in deicing salt acts as a catalyst in the process of reinforcement corrosion in wet concrete environment: it is not consumed, but it can greatly accelerate the corrosion speed of reinforcement, so the impact on reinforcement corrosion is continuous and rapid.
2.4 凍融破壞：水滲入混凝土內部，結冰膨脹，產生張力作用于混凝土，導致結構混凝土由表及里的破碎、脫落。
2.4 freeze thaw damage: water seeps into the concrete, freezes and expands, and produces tension acting on the concrete, resulting in the crushing and falling off of structural concrete from the outside to the inside
