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通过设置质量浓度5%、10%和20%3种浓度的硫酸钠溶液全浸泡试验,并以清水浸泡为基准组,测试了4组混凝土试件在150 d侵蚀龄期内的抗压强度变化。试验结果表明:硫酸钠溶液质量浓度越高,混凝土早期抗压强度提升越快,提升越大,但后期侵蚀越严重,抗压强度损失更大。低浓度的硫酸钠溶液,能够在混凝土早期更长时间地提升抗压强度,但同样不利于后期抗压强度的发展。
By setting the full immersion test of sodium sulfate solution at 5%, 10% and 20% concentrations, the compressive strength of four concrete specimens under 150d erosion period was tested with water immersion as the reference group . The results show that the higher the mass concentration of sodium sulfate solution, the faster the early compressive strength of concrete increases, the greater the increase, but the later the erosion is more serious and the compressive strength loss is greater. Low concentrations of sodium sulfate solution, can be in the concrete early to enhance the compressive strength, but also not conducive to the development of late compressive strength.