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中文摘要：
在（-3±0.2）℃养护下以引气混凝土为研究对象,研究了28d时不同含气量下混凝土抗氯离子渗透性能与孔结构特性之间的关系。研究结果表明：混凝土的电通量及氯离子迁移系数随含气量的增加而逐渐增大,不遵循标养下的规律;混凝土的气泡弦长随着含气量的增加逐渐增大;混凝土硬化后气泡间距指数随含气量的增加而减小,但比标养下混凝土硬化后气泡间距指数要大得多;理论计算出的比表面积随着含气量的增大而增大,实测的比表面积与含气量存在相关性。
英文摘要：
The relationship between resistance to chloride ion penetration and propertms oi pore structure m different air content concrete were tested at 28 d by taking air-entraining concrete under （--3q-0.2）℃curing as re- search obiect. The experimental results show that the electric flux and chloride ion migration coefficient of concrete gradually increase with air content increasing, not following under standard curing. The chords of concrete gradually increases with air content increasing. The bubbles spacing factor of concrete a{ter hardening decreases with air content increasing, but it is much greater than the bubbles spacing factor of concrete after hardening under standard curing. The theoretical specific surface of concrete increases with air content increasing, and the theoretical specific surface of concrete links with the air content.
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