Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance
Moisture distribution in cement-based materials is important from the durability point of view. In the present study, a portable three-magnet array with an elliptical surface radio frequency coil was used to undertake magnetic resonance measurements of moisture content in ordinary Portland cement mo...
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MDPI AG
2021-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/15/4279 |
| _version_ | 1797525416409300992 |
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| author | Prisciliano Felipe de Jesús Cano-Barrita Floriberto Díaz-Díaz |
| author_facet | Prisciliano Felipe de Jesús Cano-Barrita Floriberto Díaz-Díaz |
| author_sort | Prisciliano Felipe de Jesús Cano-Barrita |
| collection | DOAJ |
| description | Moisture distribution in cement-based materials is important from the durability point of view. In the present study, a portable three-magnet array with an elliptical surface radio frequency coil was used to undertake magnetic resonance measurements of moisture content in ordinary Portland cement mortar and concrete samples. Measurements along the length of the samples during capillary water absorption produced moisture content profiles that were compared with reference profiles acquired using a magnetic resonance imaging instrument. Profiles obtained with the three-magnet array were similar in shape and in penetration depth to those acquired with magnetic resonance imaging. The correlation coefficient between the moisture content measured with both techniques was r<sup>2</sup> = 0.97. Similar values of saturated permeability of the mortars with identical w/c ratio were computed with the Hydrus 1D software based on the moisture content profiles. Additionally, inverse Laplace transformation of the signal decays provided the water-filled pore size distribution in saturated and unsaturated regions of the samples. The three-magnet array was successfully used to acquire nuclear magnetic resonance signal from a concrete sample, which was not possible with the magnetic resonance imaging instrument using the single-point imaging technique. |
| first_indexed | 2024-03-10T09:12:34Z |
| format | Article |
| id | doaj.art-eceec9cfeff04724b09eb7dc6b01e8d5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T09:12:34Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eceec9cfeff04724b09eb7dc6b01e8d52023-11-22T05:54:25ZengMDPI AGMaterials1996-19442021-07-011415427910.3390/ma14154279Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic ResonancePrisciliano Felipe de Jesús Cano-Barrita0Floriberto Díaz-Díaz1Instituto Politécnico Nacional, CIIDIR Unidad Oaxaca, Calle Hornos No. 1003, Col. Noche Buena, Santa Cruz Xoxocotlán, Oaxaca 71230, MexicoInstituto Politécnico Nacional, CIIDIR Unidad Oaxaca, Calle Hornos No. 1003, Col. Noche Buena, Santa Cruz Xoxocotlán, Oaxaca 71230, MexicoMoisture distribution in cement-based materials is important from the durability point of view. In the present study, a portable three-magnet array with an elliptical surface radio frequency coil was used to undertake magnetic resonance measurements of moisture content in ordinary Portland cement mortar and concrete samples. Measurements along the length of the samples during capillary water absorption produced moisture content profiles that were compared with reference profiles acquired using a magnetic resonance imaging instrument. Profiles obtained with the three-magnet array were similar in shape and in penetration depth to those acquired with magnetic resonance imaging. The correlation coefficient between the moisture content measured with both techniques was r<sup>2</sup> = 0.97. Similar values of saturated permeability of the mortars with identical w/c ratio were computed with the Hydrus 1D software based on the moisture content profiles. Additionally, inverse Laplace transformation of the signal decays provided the water-filled pore size distribution in saturated and unsaturated regions of the samples. The three-magnet array was successfully used to acquire nuclear magnetic resonance signal from a concrete sample, which was not possible with the magnetic resonance imaging instrument using the single-point imaging technique.https://www.mdpi.com/1996-1944/14/15/4279nondestructive testingthree-magnet arrayelliptical RF coilwater absorptionordinary Portland cementpore water |
| spellingShingle | Prisciliano Felipe de Jesús Cano-Barrita Floriberto Díaz-Díaz Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance Materials nondestructive testing three-magnet array elliptical RF coil water absorption ordinary Portland cement pore water |
| title | Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance |
| title_full | Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance |
| title_fullStr | Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance |
| title_full_unstemmed | Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance |
| title_short | Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance |
| title_sort | moisture distribution during water absorption of ordinary portland cement mortars obtained with low field unilateral magnetic resonance |
| topic | nondestructive testing three-magnet array elliptical RF coil water absorption ordinary Portland cement pore water |
| url | https://www.mdpi.com/1996-1944/14/15/4279 |
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