BOND STRENGTH EVALUATION BETWEEN TEXTILES REINFORCED MORTAR WITH CARBON NANOTUBES AND CONCRETE SUBSTRATE
DOI:
https://doi.org/10.1590/1679-78255796Abstract
THE INFLUENCE OF USING CARBON NANOTUBES TO IMPROVE BOND STRENGTH BETWEEN TEXTILES REINFORCED MORTAR AND CONCRETE WAS INVESTIGATED. FORTY-TWO SPECIMENS WERE TESTED USING DOUBLE-SHEAR TEST TO EVALUATE THE EFFECT OF VARIOUS PARAMETERS SUCH AS CNTS ADDITION, TYPE OF TEXTILE MATERIAL, BOND LENGTH AND WIDTH, AND NUMBER OF TRM LAYERS ON THE BOND BEHAVIOR. TWO TYPES OF TEXTILE: CARBON AND BASALT FIBERS WERE USED. VARIOUS BOND LENGTH AND WIDTH INCLUDING 50 MM, 100 MM, AND 150 MM WERE CONSIDERED. THREE DIFFERENT PERCENTAGES OF CNTS; 0.05%, 0.1%, AND 0.2% BY WEIGHT OF CEMENT, WERE USED. THE EFFECT OF CNTS ADDITION ON THE MECHANICAL STRENGTH OF CEMENT MORTAR AND PULL-OFF STRENGTH OF TRM WERE ALSO INVESTIGATED. TEST RESULTS SHOWED THAT ADDING SMALL AMOUNT OF CNTS ENHANCED THE TENSILE AND FLEXURAL STRENGTH OF CEMENT MORTAR, THE PULL-OFF STRENGTH OF THE TRM, AND THE ULTIMATE BOND LOAD BETWEEN THE TRM AND CONCRETE SUBSTRATE. THE ULTIMATE BOND LOAD WAS HIGHLY DEPENDENT ON THE AMOUNT OF ADDED CNTS, TYPE OF TEXTILE MATERIAL, GEOMETRY OF THE BONDED AREA, AND NUMBER OF TRM LAYERS. THE SEM IMAGES SHOWED THE ROLE OF THE CNTS TO ENHANCE THE ADHESION AT THE FIBER-MATRIX INTERFACE.
Downloads
Published
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).