Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years
One of the most popular ways to lessen the impact of the cement industry on the environment consists of substituting clinker by additions. The service life required for real construction elements is generally long, so it would be interesting to obtain information about the effects of new additions a...
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| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/7/1751 |
| _version_ | 1797539010962259968 |
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| author | Rosa María Tremiño Teresa Real-Herraiz Viviana Letelier José Marcos Ortega |
| author_facet | Rosa María Tremiño Teresa Real-Herraiz Viviana Letelier José Marcos Ortega |
| author_sort | Rosa María Tremiño |
| collection | DOAJ |
| description | One of the most popular ways to lessen the impact of the cement industry on the environment consists of substituting clinker by additions. The service life required for real construction elements is generally long, so it would be interesting to obtain information about the effects of new additions after a hardening period of several years. Analyzed here are the effects of the incorporation of volcanic ashes, coming from Calbuco volcano’s last eruption (Chile), as clinker replacement, in the durability and pore structure of mortars, after approximately 4 hardening years (1500 days), in comparison with reference specimens without additions. The substitution percentages of clinker by volcanic powder studied were 10% and 20%. The microstructure was characterized with mercury intrusion porosimetry and impedance spectroscopy. In order to evaluate the pozzolanic activity of the volcanic powder after 1500 days, differential thermal analyses were performed. Water absorption after immersion, steady-state diffusion coefficient and length change were also studied. In accordance with the results obtained, the 10% and 20% substitution of clinker by volcanic powder from the Calbuco volcano showed beneficial effects in the mortars after 4 years, especially regarding the microstructure and chloride diffusion, without noticeable influence in their water absorption. |
| first_indexed | 2024-03-10T12:39:19Z |
| format | Article |
| id | doaj.art-1bf87cd4021b487b80ec43fda5702906 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:39:19Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1bf87cd4021b487b80ec43fda57029062023-11-21T13:59:18ZengMDPI AGMaterials1996-19442021-04-01147175110.3390/ma14071751Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening YearsRosa María Tremiño0Teresa Real-Herraiz1Viviana Letelier2José Marcos Ortega3Departamento de Ingeniería Civil, Universidad de Alicante, Ap. Correos 99, 03080 Alicante, SpainInstituto de Matemática Multidisciplinar, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, SpainDepartamento de Obras Civiles, Universidad de la Frontera, Av. Fco. Salazar, Temuco 01145, ChileDepartamento de Ingeniería Civil, Universidad de Alicante, Ap. Correos 99, 03080 Alicante, SpainOne of the most popular ways to lessen the impact of the cement industry on the environment consists of substituting clinker by additions. The service life required for real construction elements is generally long, so it would be interesting to obtain information about the effects of new additions after a hardening period of several years. Analyzed here are the effects of the incorporation of volcanic ashes, coming from Calbuco volcano’s last eruption (Chile), as clinker replacement, in the durability and pore structure of mortars, after approximately 4 hardening years (1500 days), in comparison with reference specimens without additions. The substitution percentages of clinker by volcanic powder studied were 10% and 20%. The microstructure was characterized with mercury intrusion porosimetry and impedance spectroscopy. In order to evaluate the pozzolanic activity of the volcanic powder after 1500 days, differential thermal analyses were performed. Water absorption after immersion, steady-state diffusion coefficient and length change were also studied. In accordance with the results obtained, the 10% and 20% substitution of clinker by volcanic powder from the Calbuco volcano showed beneficial effects in the mortars after 4 years, especially regarding the microstructure and chloride diffusion, without noticeable influence in their water absorption.https://www.mdpi.com/1996-1944/14/7/1751volcanic powderCalbuco volcanovery long termmicrostructuredurability |
| spellingShingle | Rosa María Tremiño Teresa Real-Herraiz Viviana Letelier José Marcos Ortega Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years Materials volcanic powder Calbuco volcano very long term microstructure durability |
| title | Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years |
| title_full | Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years |
| title_fullStr | Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years |
| title_full_unstemmed | Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years |
| title_short | Microstructure and Durability Performance of Mortars with Volcanic Powder from Calbuco Volcano (Chile) after 4 Hardening Years |
| title_sort | microstructure and durability performance of mortars with volcanic powder from calbuco volcano chile after 4 hardening years |
| topic | volcanic powder Calbuco volcano very long term microstructure durability |
| url | https://www.mdpi.com/1996-1944/14/7/1751 |
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