Long-term strength and porosity of mortars based on ettringite binder
Ettringite binder is widely used in mortars for technical applications such as patching mortars, self-leveling screeds, repair mortars thanks to their fast hardening ability and high early strength. However, depending on the amount and types of raw materials used in the composition, the properties o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Peter the Great St. Petersburg Polytechnic University
2023-04-01
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| Series: | Magazine of Civil Engineering |
| Subjects: | |
| Online Access: | http://engstroy.spbstu.ru/article/2023.118.02/ |
| _version_ | 1797849373105717248 |
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| author | Nguyen Ngoc Lam Georgin Jean Francois Prud'Homme Elodie |
| author_facet | Nguyen Ngoc Lam Georgin Jean Francois Prud'Homme Elodie |
| author_sort | Nguyen Ngoc Lam |
| collection | DOAJ |
| description | Ettringite binder is widely used in mortars for technical applications such as patching mortars, self-leveling screeds, repair mortars thanks to their fast hardening ability and high early strength. However, depending on the amount and types of raw materials used in the composition, the properties of these types of binder have different behaviors at early-age and at long term. In this work, the influence of the nature and dosage of calcium sulfate in ettringite binder on the long-term strength of mortar in different curing conditions was determined. The results showed that the increase of calcium sulfate content in ettringite binder from 10–25 % improves the strength of mortars regardless of the calcium sulfate nature. In all curing conditions (endogenous, drying, outdoor), the strength of ettringite mortars with anhydrite is smaller than that of mortars containing hemihydrate. There is no major difference in the porosity of the mortars in different types of curing conditions before 28 days. However, after 28 days the porosity of mortar in drying condition is about 2–3 % higher than that of the mortars in endogenous and outdoor conditions. |
| first_indexed | 2024-04-09T18:44:01Z |
| format | Article |
| id | doaj.art-74b9606050db42809d8a2508784d573c |
| institution | Directory Open Access Journal |
| issn | 2712-8172 |
| language | English |
| last_indexed | 2024-04-09T18:44:01Z |
| publishDate | 2023-04-01 |
| publisher | Peter the Great St. Petersburg Polytechnic University |
| record_format | Article |
| series | Magazine of Civil Engineering |
| spelling | doaj.art-74b9606050db42809d8a2508784d573c2023-04-10T13:57:56ZengPeter the Great St. Petersburg Polytechnic UniversityMagazine of Civil Engineering2712-81722023-04-011180210.34910/MCE.118.220714726Long-term strength and porosity of mortars based on ettringite binderNguyen Ngoc Lam0https://orcid.org/0000-0003-2238-196XGeorgin Jean Francois1https://orcid.org/0000-0002-3561-9781Prud'Homme Elodie2https://orcid.org/0000-0001-9637-7125Hanoi University of Civil EngineeringNational Institute of Applied Sciences of LyonNational Institute of Applied Sciences of LyonEttringite binder is widely used in mortars for technical applications such as patching mortars, self-leveling screeds, repair mortars thanks to their fast hardening ability and high early strength. However, depending on the amount and types of raw materials used in the composition, the properties of these types of binder have different behaviors at early-age and at long term. In this work, the influence of the nature and dosage of calcium sulfate in ettringite binder on the long-term strength of mortar in different curing conditions was determined. The results showed that the increase of calcium sulfate content in ettringite binder from 10–25 % improves the strength of mortars regardless of the calcium sulfate nature. In all curing conditions (endogenous, drying, outdoor), the strength of ettringite mortars with anhydrite is smaller than that of mortars containing hemihydrate. There is no major difference in the porosity of the mortars in different types of curing conditions before 28 days. However, after 28 days the porosity of mortar in drying condition is about 2–3 % higher than that of the mortars in endogenous and outdoor conditions.http://engstroy.spbstu.ru/article/2023.118.02/ettringitedurabilitylong-termporositystrength |
| spellingShingle | Nguyen Ngoc Lam Georgin Jean Francois Prud'Homme Elodie Long-term strength and porosity of mortars based on ettringite binder Magazine of Civil Engineering ettringite durability long-term porosity strength |
| title | Long-term strength and porosity of mortars based on ettringite binder |
| title_full | Long-term strength and porosity of mortars based on ettringite binder |
| title_fullStr | Long-term strength and porosity of mortars based on ettringite binder |
| title_full_unstemmed | Long-term strength and porosity of mortars based on ettringite binder |
| title_short | Long-term strength and porosity of mortars based on ettringite binder |
| title_sort | long term strength and porosity of mortars based on ettringite binder |
| topic | ettringite durability long-term porosity strength |
| url | http://engstroy.spbstu.ru/article/2023.118.02/ |
| work_keys_str_mv | AT nguyenngoclam longtermstrengthandporosityofmortarsbasedonettringitebinder AT georginjeanfrancois longtermstrengthandporosityofmortarsbasedonettringitebinder AT prudhommeelodie longtermstrengthandporosityofmortarsbasedonettringitebinder |