Cargando…
Improving the Self-Healing of Cementitious Materials with a Hydrogel System
Despite cement’s superior performance and inexpensive cost compared to other industrial materials, crack development remains a persistent problem in concrete. Given the comparatively low tensile strength, when cracks emerge, a pathway is created for gas and water to enter the cementitious matrix, re...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9141947/ https://www.ncbi.nlm.nih.gov/pubmed/35621576 http://dx.doi.org/10.3390/gels8050278 |
_version_ | 1784715467288477696 |
---|---|
author | Wang, Hao Habibi, Mohammad Marzouki, Riadh Majdi, Ali Shariati, Morteza Denic, Nebojsa Zakić, Aleksandar Khorami, Majid Khadimallah, Mohamed Amine Ebid, Ahmed Abdel Khalek |
author_facet | Wang, Hao Habibi, Mohammad Marzouki, Riadh Majdi, Ali Shariati, Morteza Denic, Nebojsa Zakić, Aleksandar Khorami, Majid Khadimallah, Mohamed Amine Ebid, Ahmed Abdel Khalek |
author_sort | Wang, Hao |
collection | PubMed |
description | Despite cement’s superior performance and inexpensive cost compared to other industrial materials, crack development remains a persistent problem in concrete. Given the comparatively low tensile strength, when cracks emerge, a pathway is created for gas and water to enter the cementitious matrix, resulting in steel reinforcement corrosion which compromises the durability of concrete. Superabsorbent hydrogels have been developed as a novel material for enhancing the characteristics of cementitious materials in which they have been demonstrated to decrease autogenous shrinkage and encourage self-healing. This study will detail the design and application of polyelectrolyte hydrogel particles as internal curing agents in concrete and provide new findings on relevant hydrogel–ion interactions. When hydrogel particles are mixed into concrete, they generate their stored water to fuel the curing reaction that results in less cracking and shrinkage, thereby prolonging the service life of the concrete. The interaction of hydrogels with cementitious materials is addressed in this study; the effect of hydrogels on the characteristics and self-healing of cementitious materials was also studied. Incorporating hydrogel particles into cement decreased mixture shrinkage while increasing the production of particular inorganic phases within the vacuum region formerly supplied by the swollen particle. In addition, considering the control paste, cement pastes containing hydrogels exhibited less autogenous shrinkage. The influence of hydrogels on autogenous shrinkage was found to be chemically dependent; the hydrogel with a delayed desorption rate displayed significantly low shrinkage in cement paste. |
format | Online Article Text |
id | pubmed-9141947 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91419472022-05-28 Improving the Self-Healing of Cementitious Materials with a Hydrogel System Wang, Hao Habibi, Mohammad Marzouki, Riadh Majdi, Ali Shariati, Morteza Denic, Nebojsa Zakić, Aleksandar Khorami, Majid Khadimallah, Mohamed Amine Ebid, Ahmed Abdel Khalek Gels Article Despite cement’s superior performance and inexpensive cost compared to other industrial materials, crack development remains a persistent problem in concrete. Given the comparatively low tensile strength, when cracks emerge, a pathway is created for gas and water to enter the cementitious matrix, resulting in steel reinforcement corrosion which compromises the durability of concrete. Superabsorbent hydrogels have been developed as a novel material for enhancing the characteristics of cementitious materials in which they have been demonstrated to decrease autogenous shrinkage and encourage self-healing. This study will detail the design and application of polyelectrolyte hydrogel particles as internal curing agents in concrete and provide new findings on relevant hydrogel–ion interactions. When hydrogel particles are mixed into concrete, they generate their stored water to fuel the curing reaction that results in less cracking and shrinkage, thereby prolonging the service life of the concrete. The interaction of hydrogels with cementitious materials is addressed in this study; the effect of hydrogels on the characteristics and self-healing of cementitious materials was also studied. Incorporating hydrogel particles into cement decreased mixture shrinkage while increasing the production of particular inorganic phases within the vacuum region formerly supplied by the swollen particle. In addition, considering the control paste, cement pastes containing hydrogels exhibited less autogenous shrinkage. The influence of hydrogels on autogenous shrinkage was found to be chemically dependent; the hydrogel with a delayed desorption rate displayed significantly low shrinkage in cement paste. MDPI 2022-04-29 /pmc/articles/PMC9141947/ /pubmed/35621576 http://dx.doi.org/10.3390/gels8050278 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Hao Habibi, Mohammad Marzouki, Riadh Majdi, Ali Shariati, Morteza Denic, Nebojsa Zakić, Aleksandar Khorami, Majid Khadimallah, Mohamed Amine Ebid, Ahmed Abdel Khalek Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title | Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title_full | Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title_fullStr | Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title_full_unstemmed | Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title_short | Improving the Self-Healing of Cementitious Materials with a Hydrogel System |
title_sort | improving the self-healing of cementitious materials with a hydrogel system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9141947/ https://www.ncbi.nlm.nih.gov/pubmed/35621576 http://dx.doi.org/10.3390/gels8050278 |
work_keys_str_mv | AT wanghao improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT habibimohammad improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT marzoukiriadh improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT majdiali improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT shariatimorteza improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT denicnebojsa improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT zakicaleksandar improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT khoramimajid improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT khadimallahmohamedamine improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem AT ebidahmedabdelkhalek improvingtheselfhealingofcementitiousmaterialswithahydrogelsystem |