温度和氯盐对混凝土硫酸盐化学腐蚀的影响
发布时间：2018-10-05 16:07
【摘要】：为揭示混凝土在不同硫酸盐腐蚀环境下的损伤过程及腐蚀机理,进行了硫酸盐浸泡实验,研究了在复合溶液浸泡作用下混凝土的抗压强度演变、腐蚀产物类型及硫酸根离子反应能力.结果表明:混凝土在硫酸钠溶液中抗压强度先增加后降低,且主要腐蚀产物是钙矾石和石膏.在复合溶液腐蚀环境下,腐蚀产物以钙矾石为主,且混凝土亚微观缺陷减少6.46%.当提高腐蚀溶液温度至50℃时,混凝土的抗压强度演变速度加快,硫酸根离子反应能力提高20%,腐蚀产物以石膏为主.
[Abstract]:In order to reveal the damage process and corrosion mechanism of concrete under different sulphate corrosion environment, the sulphate immersion experiment was carried out, and the evolution of compressive strength of concrete under the action of composite solution immersion was studied. Types of corrosion products and reaction ability of sulfate ions. The results show that the compressive strength of concrete in sodium sulfate solution first increases and then decreases, and the main corrosion products are ettringite and gypsum. Ettringite is the main corrosion product in the complex solution corrosion environment, and the submicroscopic defects of concrete are reduced by 6.46%. When the temperature of corrosion solution is raised to 50 鈩，
本文编号：2254019
[Abstract]:In order to reveal the damage process and corrosion mechanism of concrete under different sulphate corrosion environment, the sulphate immersion experiment was carried out, and the evolution of compressive strength of concrete under the action of composite solution immersion was studied. Types of corrosion products and reaction ability of sulfate ions. The results show that the compressive strength of concrete in sodium sulfate solution first increases and then decreases, and the main corrosion products are ettringite and gypsum. Ettringite is the main corrosion product in the complex solution corrosion environment, and the submicroscopic defects of concrete are reduced by 6.46%. When the temperature of corrosion solution is raised to 50 鈩，
本文编号：2254019
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