锂渣混凝土的力学性能及碳化试验研究

关键字：锂渣混凝土,流动度,抗压强度,加速碳化,孔径分布

（浙江建设职业技术学院 建筑工程系，浙江 杭州  311231）

    摘要：基于锂渣的微集料和活性效应研究了不同掺量锂渣对混凝土流动性、抗压强度的影响，通过加速碳化试验探究了锂渣混凝土的抗碳化特性，采用压汞法探究了碳化后的锂渣混凝土的孔径分布。结果表明：掺加20%锂渣时混凝土的抗压强度最大，抗碳化能力最强；掺加40%锂渣混凝土的抗压强度最小，抗碳化能力最弱，坍落度降低了16.3%；掺加40%锂渣混凝土的孔隙率相比掺加20%锂渣时增加了55.5%。
    关键词：锂渣混凝土；流动度；抗压强度；加速碳化；孔径分布
    中图分类号：TU528          文献标识码：A          文章编号：1001-702X（2017）05-0081-03

Experimental study on basic mechanics and carbonization of lithium slag concrete
DING Tianting，LI Qihua，CHEN Shudong
（Department of Architectural Engineering，Zhejiang College of Construction，Hangzhou 311231，China）

    Abstract：The effect of different content of lithium slag on the flow performance and compressive strength of concrete was studied based on the micro aggregate and active effect of lithium slag，and the carbonization resistance of lithium slag concrete was investigated by accelerated carbonization test. The pore size distribution of lithium slag concrete after carbonization was explored by mercury intrusion porosimetry. The results show that the fluidity of concrete with content 40% lithium slag is reduced by 16.3%； The compressive strength and anti-carbonization ability of concrete with 20% lithium slag is the strongest. The compressive strength and anti-carbonization ability of concrete with 40% lithium slag is the weakest. The porosity of concrete with content 40% lithium slag is 55.5% higher than that of concrete with content 20% lithium slag.
    Key words：lithium slag concrete，fluidity，compressive strength，accelerated carbonization，pore size distribution