A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Poly(aspartic acid) superabsorbent polymers as biobased and biodegradable additives for self-sealing of cementitious mortar
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.
Poly(aspartic acid) superabsorbent polymers as biobased and biodegradable additives for self-sealing of cementitious mortar
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.
Poly(aspartic acid) superabsorbent polymers as biobased and biodegradable additives for self-sealing of cementitious mortar
De Grave, L. (author) / Tenorio, J.R. (author) / Snoeck, D. (author) / Vynnytska, S. (author) / De Belie, N. (author) / Bernaerts, K.V. (author) / Van Vlierberghe, S. (author)
2023-08-03
De Grave , L , Tenorio , J R , Snoeck , D , Vynnytska , S , De Belie , N , Bernaerts , K V & Van Vlierberghe , S 2023 , ' Poly(aspartic acid) superabsorbent polymers as biobased and biodegradable additives for self-sealing of cementitious mortar ' , Journal of Sustainable Cement-Based Materials , vol. 12 , no. 8 , pp. 925-940 . https://doi.org/10.1080/21650373.2022.2137861
Article (Journal)
Electronic Resource
English
| Taylor & Francis Verlag | 2023
Rapid self-sealing of cracks in cementitious materials incorporating superabsorbent polymers
| Online Contents | 2017
Rapid self-sealing of cracks in cementitious materials incorporating superabsorbent polymers
| British Library Online Contents | 2017
Modeling rapid self-sealing of cracks in cementitious materials using superabsorbent polymers
| British Library Online Contents | 2018