Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate
Normal aggregates employed in concrete have absorption levels in the range of 0.2% to 4% for coarse aggregate and 0.2 to 2% for fine aggregate. However, some aggregates have absorption levels above these values. As the porosity of concrete is related to the porosity of both the cement paste and the...
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/734031 |
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| author | Eric I. Moreno |
| author_facet | Eric I. Moreno |
| author_sort | Eric I. Moreno |
| collection | DOAJ |
| description | Normal aggregates employed in concrete have absorption levels in the range of 0.2% to 4% for coarse aggregate and 0.2 to 2% for fine aggregate. However, some aggregates have absorption levels above these values. As the porosity of concrete is related to the porosity of both the cement paste and the aggregate and the carbonation rate is a function, among other things, of the porosity of the material, there is concern about the effect of this high porosity material in achieving good quality concrete from the durability point of view. Thus, the objective of this investigation was to study the carbonation rates of concrete specimens made with high-absorption limestone aggregate. Four different water/cement ratios were used, and cylindrical concrete specimens were exposed to accelerated carbonation. High porosity values were obtained for concrete specimens beyond the expected limits for durable concrete. However, carbonation coefficients related to normal quality concrete were obtained for the lowest water/cement ratio employed suggesting that durable concrete may be obtained with this material despite the high porosity. |
| format | Article |
| id | doaj-art-1ca851f895dd44168f73179806e1dc52 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-1ca851f895dd44168f73179806e1dc522025-02-03T05:52:19ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/734031734031Carbonation Coefficients from Concrete Made with High-Absorption Limestone AggregateEric I. Moreno0College of Engineering, Universidad Autónoma de Yucatán, Avenida Industrias No Contaminantes s/n por Periférico Norte, Mérida, YUC, CP 97110, MexicoNormal aggregates employed in concrete have absorption levels in the range of 0.2% to 4% for coarse aggregate and 0.2 to 2% for fine aggregate. However, some aggregates have absorption levels above these values. As the porosity of concrete is related to the porosity of both the cement paste and the aggregate and the carbonation rate is a function, among other things, of the porosity of the material, there is concern about the effect of this high porosity material in achieving good quality concrete from the durability point of view. Thus, the objective of this investigation was to study the carbonation rates of concrete specimens made with high-absorption limestone aggregate. Four different water/cement ratios were used, and cylindrical concrete specimens were exposed to accelerated carbonation. High porosity values were obtained for concrete specimens beyond the expected limits for durable concrete. However, carbonation coefficients related to normal quality concrete were obtained for the lowest water/cement ratio employed suggesting that durable concrete may be obtained with this material despite the high porosity.http://dx.doi.org/10.1155/2013/734031 |
| spellingShingle | Eric I. Moreno Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate Advances in Materials Science and Engineering |
| title | Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate |
| title_full | Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate |
| title_fullStr | Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate |
| title_full_unstemmed | Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate |
| title_short | Carbonation Coefficients from Concrete Made with High-Absorption Limestone Aggregate |
| title_sort | carbonation coefficients from concrete made with high absorption limestone aggregate |
| url | http://dx.doi.org/10.1155/2013/734031 |
| work_keys_str_mv | AT ericimoreno carbonationcoefficientsfromconcretemadewithhighabsorptionlimestoneaggregate |