H & T PUBLICATION Express Nano Letters 1 2020 Improving the Performance of Conventional Concrete Using Multi-Walled Carbon Nanotubes 1 9 EN Mahdi Feizbahr Ali shahrjerdi Seyed Mohammad Mirhosseini Ali Hassani Joshaghani Journal Article <p style="text-align: justify;"><span lang="ES-CO" style="font-size: 12.0pt; line-height: 115%; font-family: â€™Times New Romanâ€™,serif; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: ES-CO; mso-fareast-language: EN-US; mso-bidi-language: FA; mso-no-proof: yes;">Today, one of the main aspects of nanotechnology is its interdisciplinary nature and the interaction of this science with concrete science which can create a turning point in the construction industry. The goal of nanoscale concrete research is to discover a new generation of high-performance building materials with new and different properties than traditional materials. The present study aims to investigate and compare the mechanical and strength properties of cement concrete samples and concrete samples mixed with nanotubes. Also, the compressive strength changes in three mixtures with 0.045, 0.15, and 0.2 percentage of the nanotube to cement weight in the concrete matrix is another goal that was pursued in this study. By performing the necessary tests based on the relevant standards, different ratio of nanomaterials in the main concrete mix design were compared and analyzed. In all tests, better performance of nano concrete than cement concrete was observed. Averagely, at 90 days of age, a more than 30% increase in compressive strength in carbon nanotube concrete samples was recognized in comparison with the concrete control samples.</span></p>

http://www.htpub.org/article/Express-Nano-Letters/vol/1/num_method/yes/articleid/865