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纳米CaCO3对混凝土性能影响的研究
作者：杨晶
（内蒙古建筑职业技术学院，内蒙古 呼和浩特 010070）
摘要：研究了纳米CaCO3对混凝土的力学性能和耐久性能的影响，结果表明：纳米CaCO3和粉煤灰均能有效提高混凝土的强度，随养护龄期的延长，混凝土的抗压强度逐渐提高，且纳米CaCO3对混凝土抗压强度的提高具有显著优势；纳米CaCO3提高了混凝土的抗渗性和抗碳化性能，且随混凝土碳化时间的延长，能够有效降低碳化性能对时间的敏感性，降低碳化速率。
关键词：水泥混凝土；纳米CaCO3；力学性能；抗渗性能；碳化
中图分类号：TU528.04 文献标识码：A 文章编号：1001-702X（2019）12-0052-03
Study on the performance of nano CaCO3 modified cement concrete
YANG Jing
（Inner Mongolia Technical College of Construction，Huhhot 010070，China）
Abstract：The influence of nano CaCO3 on the mechanical properties and durability of concrete was studied. The results show，nano CaCO3 and fly ash can effectively improve the mechanical strength of concrete，compressive strength is increased with the increase of curing age，and nano CaCO3 has significant advantages in improving the compressive strength of concrete；nano
CaCO3 improved the permeability resistance and carbonation resistance of concrete. With the extension of concrete carbonization time，it can effectively reduce the sensitivity of carbonation resistance to time，and reduce carbonization rate.
Key words：cement concrete，nano CaCO3，mechanical properties，anti-penetrating performance，carbonization