Resistance of blended concrete containing an industrial petrochemical residue to chloride ion penetration and carbonation
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional de Colombia
2014
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| _version_ | 1876423711210340352 |
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| author | N. Torres Castellanos |
| author_facet | N. Torres Castellanos |
| contents | Resistance of blended concrete containing an industrial petrochemical residue to chloride ion penetration and carbonation N. Torres Castellanos S. Izquierdo García J. Torres Agredo R. Mejía de Gutierrez Ingeniería metakaolin silica fume blended concrete pozzolanic additions carbonation resistance In this study, the resistance of blended concrete containing catalytic cracking residue (FCC) to chloride ion penetration and carbon-ation was examined. FCC was added at the levels of 10%, 20%, and 30% as partial replacement for cement. Concretes with 10% of silica fume (SF), 10% of metakaolin (MK), and without additives were evaluated as reference materials. The rapid chloride permeability test (RCPT) performed according to ASTM C1202 standards and an accelerated carbonation test in a climatic chamber under con-trolled conditions (23 °C, 60% RH and 4.0% CO2), were used in order to evaluate the performance of these concretes. Additionally, their compressive strength was determined. The results indicate that binary blends with 10% FCC had similar compressive strength to concrete without additives and had lower chloride permeability. 10% SF and 10% MK exhibited better mechanical behavior and a significant decrease in chloride penetration when compared to 10% FCC. It is noted that there was an increase in concrete carbon-ation when FCC or MK were used as additives. It was also observed that with longer curing time, the samples with and without additives, presented higher resistance to carbonation. The accelerated corrosion test by impressed voltage was also performed to verify the findings and to investigate the characteristics of corrosion using a 3.5% NaCl solution as electrolyte. The mixtures that contained 10% FCC were highly resistant to chloride ion penetration and did not present cracking within the testing period. 2014 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64330696003 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.1 Vol.34 |
| format | Artículo científico |
| id | redalyc_64330696003 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Resistance of blended concrete containing an industrial petrochemical residue to chloride ion penetration and carbonation N. Torres Castellanos Ingeniería metakaolin silica fume blended concrete pozzolanic additions carbonation resistance Resistance of blended concrete containing an industrial petrochemical residue to chloride ion penetration and carbonation N. Torres Castellanos S. Izquierdo García J. Torres Agredo R. Mejía de Gutierrez Ingeniería metakaolin silica fume blended concrete pozzolanic additions carbonation resistance In this study, the resistance of blended concrete containing catalytic cracking residue (FCC) to chloride ion penetration and carbon-ation was examined. FCC was added at the levels of 10%, 20%, and 30% as partial replacement for cement. Concretes with 10% of silica fume (SF), 10% of metakaolin (MK), and without additives were evaluated as reference materials. The rapid chloride permeability test (RCPT) performed according to ASTM C1202 standards and an accelerated carbonation test in a climatic chamber under con-trolled conditions (23 °C, 60% RH and 4.0% CO2), were used in order to evaluate the performance of these concretes. Additionally, their compressive strength was determined. The results indicate that binary blends with 10% FCC had similar compressive strength to concrete without additives and had lower chloride permeability. 10% SF and 10% MK exhibited better mechanical behavior and a significant decrease in chloride penetration when compared to 10% FCC. It is noted that there was an increase in concrete carbon-ation when FCC or MK were used as additives. It was also observed that with longer curing time, the samples with and without additives, presented higher resistance to carbonation. The accelerated corrosion test by impressed voltage was also performed to verify the findings and to investigate the characteristics of corrosion using a 3.5% NaCl solution as electrolyte. The mixtures that contained 10% FCC were highly resistant to chloride ion penetration and did not present cracking within the testing period. 2014 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64330696003 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.1 Vol.34 |
| title | Resistance of blended concrete containing an industrial petrochemical residue to chloride ion penetration and carbonation |
| topic | Ingeniería metakaolin silica fume blended concrete pozzolanic additions carbonation resistance |
| url | https://www.redalyc.org/articulo.oa?id=64330696003 |