碳纳米管水泥复合材料的力学性能与耐久性

Mechanical Properties and Durability of CNT Cement Composites.

作者信息

Del Carmen Camacho María, Galao Oscar, Baeza Francisco Javier, Zornoza Emilio, Garcés Pedro

机构信息

Civil Engineering Department, Universidad de Alicante, Ctra San Vicente s/n, San Vicente del Raspeig 03690, Spain.

出版信息

Materials (Basel). 2014 Feb 28;7(3):1640-1651. doi: 10.3390/ma7031640.

DOI:10.3390/ma7031640

PMID:28788536

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5453286/

Abstract

In the present paper, changes in mechanical properties of Portland cement-based mortars due to the addition of carbon nanotubes (CNT) and corrosion of embedded steel rebars in CNT cement pastes are reported. Bending strength, compression strength, porosity and density of mortars were determined and related to the CNT dosages. CNT cement paste specimens were exposed to carbonation and chloride attacks, and results on steel corrosion rate tests were related to CNT dosages. The increase in CNT content implies no significant variations of mechanical properties but higher steel corrosion intensities were observed.

摘要

在本文中，报告了由于添加碳纳米管（CNT）导致的波特兰水泥基砂浆力学性能变化以及碳纳米管水泥浆体中埋入钢筋的腐蚀情况。测定了砂浆的抗弯强度、抗压强度、孔隙率和密度，并将其与碳纳米管用量相关联。对碳纳米管水泥浆体试件进行了碳化和氯化物侵蚀试验，钢筋腐蚀速率试验结果与碳纳米管用量相关。碳纳米管含量的增加意味着力学性能没有显著变化，但观察到更高的钢筋腐蚀强度。