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
Přispěvatelé:	AMIBM, RS: FSE AMIBM
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	CROSS-LINKING POLYASPARTIC ACID HYDROGELS WATER PERMEABILITY IN-VITRO PERFORMANCE poly(aspartic acid) cementitious materials DELIVERY CONCRETE self-sealing AUTOGENOUS SHRINKAGE SOIL CONDITIONER Ceramics and Composites sustainable superabsorbent polymers Waste Management and Disposal
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
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeb229a9e6293b2da9f40fe8b547b070 https://doi.org/10.1080/21650373.2022.2137861 Zobrazit plný text záznamu