Poly(aspartic acid) superabsorbent polymers as biobased and biodegradable additives for self-sealing of cementitious mortar
Autor: | Lauren De Grave, José Roberto Tenório Filho, Didier Snoeck, Sofiya Vynnytska, Nele De Belie, Katrien V. Bernaerts, Sandra Van Vlierberghe |
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Přispěvatelé: | AMIBM, RS: FSE AMIBM |
Jazyk: | angličtina |
Rok vydání: | 2022 |
Předmět: | |
Zdroj: | Journal of Sustainable Cement-Based Materials. Routledge/Taylor & Francis Group |
ISSN: | 2165-0381 2165-0373 |
Popis: | Concrete is currently the most used man-made construction material. Unfortunately it is prone to defects, such as cracks. Crack repair is possible by incorporation of superabsorbent polymers (SAPs) which can fill a crack by swelling and promote formation of healing products. However, SAPs are usually acrylate-based and not biodegradable. Present work focuses on development of SAPs based on poly(aspartic acid) (PASP), which is a biobased and biodegradable alternative of acrylate-based polymers. The developed SAP was incorporated in mortar and the effect on the mortar properties was studied. When adding 1 m% SAP, a decrease in strength was observed, similar to commercially available acrylate-based SAPs. The SAPs showed an efficient and immediate sealing effect in cracked mortar, reflected by a reduction in water permeability over 50%. Hence, the developed biobased SAP shows good sealing properties and could be used as a sustainable alternative for acrylic SAPs in concrete repair. |
Databáze: | OpenAIRE |
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