Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture
Crystalline admixtures embedded in concrete may react in the presence of water and generate thin crystals able to fill pores, capillaries and micro-cracks. Once the concrete has dried, the crystalline chemicals sit dormant until another dose of water starts the crystallization again. The research ai...
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| Format: | Article |
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MDPI AG
2021-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/17/4951 |
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| author | Calin Mircea Tudor-Panfil Toader Andreea Hegyi Brăduț-Alexandru Ionescu Andreea Mircea |
| author_facet | Calin Mircea Tudor-Panfil Toader Andreea Hegyi Brăduț-Alexandru Ionescu Andreea Mircea |
| author_sort | Calin Mircea |
| collection | DOAJ |
| description | Crystalline admixtures embedded in concrete may react in the presence of water and generate thin crystals able to fill pores, capillaries and micro-cracks. Once the concrete has dried, the crystalline chemicals sit dormant until another dose of water starts the crystallization again. The research aims to analyses the early age self-sealing effect of a crystalline admixture at a dosage rate of 1–3% of the cement mass. Specimens made with two types of gravel were pre-loaded with three-point bending to up to 90% of the ultimate capacity, and conditioned through wet–dry cycles. Micro-crack closure was measured with a microscope after pre-loading, and after 1 day, 4 days, 8 days, 14 days and 20 days of wet–dry exposure. The results show that an admixture content of 3% achieves the best early self-sealing performance. These results are also confirmed by probabilistic analyses, which also emphasize the self-sealing potential of lower ICW contents. |
| first_indexed | 2024-03-10T08:08:07Z |
| format | Article |
| id | doaj.art-b6a7f5da51e24ae4bff6c3faf2526c0d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T08:08:07Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b6a7f5da51e24ae4bff6c3faf2526c0d2023-11-22T10:54:04ZengMDPI AGMaterials1996-19442021-08-011417495110.3390/ma14174951Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing AdmixtureCalin Mircea0Tudor-Panfil Toader1Andreea Hegyi2Brăduț-Alexandru Ionescu3Andreea Mircea4Civil Engineering Faculty, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaCivil Engineering Faculty, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaNIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floressti, 400524 Cluj-Napoca, RomaniaCivil Engineering Faculty, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaCivil Engineering Faculty, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaCrystalline admixtures embedded in concrete may react in the presence of water and generate thin crystals able to fill pores, capillaries and micro-cracks. Once the concrete has dried, the crystalline chemicals sit dormant until another dose of water starts the crystallization again. The research aims to analyses the early age self-sealing effect of a crystalline admixture at a dosage rate of 1–3% of the cement mass. Specimens made with two types of gravel were pre-loaded with three-point bending to up to 90% of the ultimate capacity, and conditioned through wet–dry cycles. Micro-crack closure was measured with a microscope after pre-loading, and after 1 day, 4 days, 8 days, 14 days and 20 days of wet–dry exposure. The results show that an admixture content of 3% achieves the best early self-sealing performance. These results are also confirmed by probabilistic analyses, which also emphasize the self-sealing potential of lower ICW contents.https://www.mdpi.com/1996-1944/14/17/4951mortarself-sealingmicro-crackscrystalline admixturesearly agegrain size |
| spellingShingle | Calin Mircea Tudor-Panfil Toader Andreea Hegyi Brăduț-Alexandru Ionescu Andreea Mircea Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture Materials mortar self-sealing micro-cracks crystalline admixtures early age grain size |
| title | Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture |
| title_full | Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture |
| title_fullStr | Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture |
| title_full_unstemmed | Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture |
| title_short | Early Age Sealing Capacity of Structural Mortar with Integral Crystalline Waterproofing Admixture |
| title_sort | early age sealing capacity of structural mortar with integral crystalline waterproofing admixture |
| topic | mortar self-sealing micro-cracks crystalline admixtures early age grain size |
| url | https://www.mdpi.com/1996-1944/14/17/4951 |
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