A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Reaching Beyond Internal Curing: The Effects of Superabsorbent Polymers on the Durability of Reinforced Concrete Structures
https://orcid.org/http://orcid.org/0000-0002-3135-5694
https://orcid.org/http://orcid.org/0000-0002-0851-6242
https://orcid.org/http://orcid.org/0000-0001-9427-6312
With the current demands for more sustainable and durable structures, the search for smarter and innovative building materials plays a crucial role in the further development of the construction industry. The discovery of the synergetic effect between superabsorbent polymers (SAPs) and cementitious materials gave space to uncountable new possibilities. SAPs have since then been proven to effectively mitigate autogenous shrinkage, increase resistance to freeze-thaw damage, promote immediate sealing of cracks, enhance self-healing, etc. In this paper, the use of SAPs as internal curing agents in large-scale reinforced concrete walls is described with focus on the effects of internal curing on the crack formation and consequent corrosion initiation. Two reinforced concrete walls (with and without SAPs) were produced and monitored after casting. Multireference electrodes were used for monitoring the corrosion potential while the shrinkage strain was monitored by means of optical fiber sensors. Cracks were observed in the reference wall already five days after casting, while the SAP-wall remained crack-free after 24 months. The reference wall showed an indication of possible corrosion initiation near two of the crack locations six months after casting. In contrast, no corrosion potential was identified in the crack-free wall with SAPs.
Reaching Beyond Internal Curing: The Effects of Superabsorbent Polymers on the Durability of Reinforced Concrete Structures
https://orcid.org/http://orcid.org/0000-0002-3135-5694
https://orcid.org/http://orcid.org/0000-0002-0851-6242
https://orcid.org/http://orcid.org/0000-0001-9427-6312
With the current demands for more sustainable and durable structures, the search for smarter and innovative building materials plays a crucial role in the further development of the construction industry. The discovery of the synergetic effect between superabsorbent polymers (SAPs) and cementitious materials gave space to uncountable new possibilities. SAPs have since then been proven to effectively mitigate autogenous shrinkage, increase resistance to freeze-thaw damage, promote immediate sealing of cracks, enhance self-healing, etc. In this paper, the use of SAPs as internal curing agents in large-scale reinforced concrete walls is described with focus on the effects of internal curing on the crack formation and consequent corrosion initiation. Two reinforced concrete walls (with and without SAPs) were produced and monitored after casting. Multireference electrodes were used for monitoring the corrosion potential while the shrinkage strain was monitored by means of optical fiber sensors. Cracks were observed in the reference wall already five days after casting, while the SAP-wall remained crack-free after 24 months. The reference wall showed an indication of possible corrosion initiation near two of the crack locations six months after casting. In contrast, no corrosion potential was identified in the crack-free wall with SAPs.
Reaching Beyond Internal Curing: The Effects of Superabsorbent Polymers on the Durability of Reinforced Concrete Structures
https://orcid.org/http://orcid.org/0000-0002-3135-5694
https://orcid.org/http://orcid.org/0000-0002-0851-6242
https://orcid.org/http://orcid.org/0000-0001-9427-6312
With the current demands for more sustainable and durable structures, the search for smarter and innovative building materials plays a crucial role in the further development of the construction industry. The discovery of the synergetic effect between superabsorbent polymers (SAPs) and cementitious materials gave space to uncountable new possibilities. SAPs have since then been proven to effectively mitigate autogenous shrinkage, increase resistance to freeze-thaw damage, promote immediate sealing of cracks, enhance self-healing, etc. In this paper, the use of SAPs as internal curing agents in large-scale reinforced concrete walls is described with focus on the effects of internal curing on the crack formation and consequent corrosion initiation. Two reinforced concrete walls (with and without SAPs) were produced and monitored after casting. Multireference electrodes were used for monitoring the corrosion potential while the shrinkage strain was monitored by means of optical fiber sensors. Cracks were observed in the reference wall already five days after casting, while the SAP-wall remained crack-free after 24 months. The reference wall showed an indication of possible corrosion initiation near two of the crack locations six months after casting. In contrast, no corrosion potential was identified in the crack-free wall with SAPs.
Reaching Beyond Internal Curing: The Effects of Superabsorbent Polymers on the Durability of Reinforced Concrete Structures
RILEM Bookseries
Jędrzejewska, Agnieszka (editor) / Kanavaris, Fragkoulis (editor) / Azenha, Miguel (editor) / Benboudjema, Farid (editor) / Schlicke, Dirk (editor) / Tenório Filho, José Roberto (author) / De Belie, Nele (author) / Snoeck, Didier (author)
International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures ; 2023 ; Milos Island, Greece
2023-06-09
9 pages
Article/Chapter (Book)
Electronic Resource
English
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