Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments
This study investigated compressive strength, chloride penetration, and freeze-thaw resistance of multiwalled carbon nanotube (MWNT) concrete. More than 100 cylindrical specimens were used to assess test variables during sensitivity observations, including water-cement ratios (0.75, 0.5, and 0.4) an...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/572102 |
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| author | Xingang Wang Inkyu Rhee Yao Wang Yunping Xi |
| author_facet | Xingang Wang Inkyu Rhee Yao Wang Yunping Xi |
| author_sort | Xingang Wang |
| collection | DOAJ |
| description | This study investigated compressive strength, chloride penetration, and freeze-thaw resistance of multiwalled carbon nanotube (MWNT) concrete. More than 100 cylindrical specimens were used to assess test variables during sensitivity observations, including water-cement ratios (0.75, 0.5, and 0.4) and exposure to chemical agents (including gum arabic, propanol, ethanol, sodium polyacrylate, methylcellulose, sodium dodecyl sulfate, and silane). To determine the adequate sonication time for MWNT dispersal in water, the compressive strengths of MWNT concrete cylinders were measured after sonication times ranging from 2 to 24 minutes. The results demonstrated that the addition of MWNT can increase the compressive strength of concrete by up to 108%. However, without chemical treatment, MWNT concretes tend to have poor freeze-thaw resistance. Among the different chemical treatments, MWNT concrete treated with sodium polyacrylate has the best compressive strength, chloride resistance, and freeze-thaw durability. |
| format | Article |
| id | doaj-art-53b29e421bf04a2ca3d2f9047bbb55f8 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-53b29e421bf04a2ca3d2f9047bbb55f82025-08-20T03:36:26ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/572102572102Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical TreatmentsXingang Wang0Inkyu Rhee1Yao Wang2Yunping Xi3Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USADepartment of Civil Engineering, Chonnam National University, Gwangju 500-757, Republic of KoreaDepartment of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USADepartment of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USAThis study investigated compressive strength, chloride penetration, and freeze-thaw resistance of multiwalled carbon nanotube (MWNT) concrete. More than 100 cylindrical specimens were used to assess test variables during sensitivity observations, including water-cement ratios (0.75, 0.5, and 0.4) and exposure to chemical agents (including gum arabic, propanol, ethanol, sodium polyacrylate, methylcellulose, sodium dodecyl sulfate, and silane). To determine the adequate sonication time for MWNT dispersal in water, the compressive strengths of MWNT concrete cylinders were measured after sonication times ranging from 2 to 24 minutes. The results demonstrated that the addition of MWNT can increase the compressive strength of concrete by up to 108%. However, without chemical treatment, MWNT concretes tend to have poor freeze-thaw resistance. Among the different chemical treatments, MWNT concrete treated with sodium polyacrylate has the best compressive strength, chloride resistance, and freeze-thaw durability.http://dx.doi.org/10.1155/2014/572102 |
| spellingShingle | Xingang Wang Inkyu Rhee Yao Wang Yunping Xi Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments The Scientific World Journal |
| title | Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments |
| title_full | Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments |
| title_fullStr | Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments |
| title_full_unstemmed | Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments |
| title_short | Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments |
| title_sort | compressive strength chloride permeability and freeze thaw resistance of mwnt concretes under different chemical treatments |
| url | http://dx.doi.org/10.1155/2014/572102 |
| work_keys_str_mv | AT xingangwang compressivestrengthchloridepermeabilityandfreezethawresistanceofmwntconcretesunderdifferentchemicaltreatments AT inkyurhee compressivestrengthchloridepermeabilityandfreezethawresistanceofmwntconcretesunderdifferentchemicaltreatments AT yaowang compressivestrengthchloridepermeabilityandfreezethawresistanceofmwntconcretesunderdifferentchemicaltreatments AT yunpingxi compressivestrengthchloridepermeabilityandfreezethawresistanceofmwntconcretesunderdifferentchemicaltreatments |