X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar

Claudia Romero Rodriguez; Maxim Deprez; Fernando F. de Mendonca Filho; Stefanie van Offenwert; Veerle Cnudde; Erik Schlangen; Branko Šavija

doi:10.1007/978-3-030-33342-3_4

X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar

Claudia Romero Rodriguez^*, Maxim Deprez, Fernando F. de Mendonca Filho, Stefanie van Offenwert, Veerle Cnudde, Erik Schlangen, Branko Šavija

^*Corresponding author for this work

Materials and Environment

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

4 Citations (Scopus)

99 Downloads (Pure)

Abstract

Superabsorbent Polymers (SAP) have been recently subject of investigation as smart admixtures for cement-based materials. The properties of these polymers enable their use for internal curing, increasing freeze/thaw resistance, boosting autogenous self-healing and providing a crack self-sealing effect in cementitious composites. Except for the earliest application, the functioning of these beneficial effects invloves the absorption by the polymers of ingress water in the hardened cementitious matrix and later release, as well as their capacity to complete multiple absorption/desorption cycles. In this work, the absorption of water in mortar with superabsorbent polymers is monitored during the first 60 min of absorption through micro-CT. The experimental series included the presence of cracks. The registration and differentiation of sub-minute (18 s) scans enabled the individuation of bulk water content distribution in the mortar with a resolution of 55 μm. The swollen volume of SAP could also be quantified and studied in time. The results point out that although embedded SAP absorb water from the matrix, this absorption is slow and reduced with respect to water absorption during mixing for the used SAP. Same effect is observed for SAP in the cracks.

Original language	English
Title of host publication	SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete
Editors	William P. Boshoff, Viktor Mechtcherine, Riaan Combrinck, Mateusz Wyrzykowski
Publisher	Springer
Pages	29-37
Number of pages	9
Volume	24
ISBN (Electronic)	978-3-030-33342-3
ISBN (Print)	978-3-030-33341-6
DOIs	https://doi.org/10.1007/978-3-030-33342-3_4
Publication status	Published - 2020

Publication series

Name	RILEM Bookseries
Volume	24
ISSN (Print)	2211-0844
ISSN (Electronic)	2211-0852

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Concrete durability
Mortar
SAP
X-ray micro computed tomography

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10.1007/978-3-030-33342-3_4

Rodriguez2020_Chapter_X-RayMicroTomographyOfWaterAbsFinal published version, 1.06 MB

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Rodriguez, C. R., Deprez, M., de Mendonca Filho, F. F., van Offenwert, S., Cnudde, V., Schlangen, E., & Šavija, B. (2020). X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar. In W. P. Boshoff, V. Mechtcherine, R. Combrinck, & M. Wyrzykowski (Eds.), SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete (Vol. 24, pp. 29-37). (RILEM Bookseries; Vol. 24). Springer. https://doi.org/10.1007/978-3-030-33342-3_4

Rodriguez, Claudia Romero ; Deprez, Maxim ; de Mendonca Filho, Fernando F. et al. / X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar. SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete . editor / William P. Boshoff ; Viktor Mechtcherine ; Riaan Combrinck ; Mateusz Wyrzykowski. Vol. 24 Springer, 2020. pp. 29-37 (RILEM Bookseries).

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abstract = "Superabsorbent Polymers (SAP) have been recently subject of investigation as smart admixtures for cement-based materials. The properties of these polymers enable their use for internal curing, increasing freeze/thaw resistance, boosting autogenous self-healing and providing a crack self-sealing effect in cementitious composites. Except for the earliest application, the functioning of these beneficial effects invloves the absorption by the polymers of ingress water in the hardened cementitious matrix and later release, as well as their capacity to complete multiple absorption/desorption cycles. In this work, the absorption of water in mortar with superabsorbent polymers is monitored during the first 60 min of absorption through micro-CT. The experimental series included the presence of cracks. The registration and differentiation of sub-minute (18 s) scans enabled the individuation of bulk water content distribution in the mortar with a resolution of 55 μm. The swollen volume of SAP could also be quantified and studied in time. The results point out that although embedded SAP absorb water from the matrix, this absorption is slow and reduced with respect to water absorption during mixing for the used SAP. Same effect is observed for SAP in the cracks.",

keywords = "Concrete durability, Mortar, SAP, X-ray micro computed tomography",

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Rodriguez, CR, Deprez, M, de Mendonca Filho, FF, van Offenwert, S, Cnudde, V, Schlangen, E & Šavija, B 2020, X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar. in WP Boshoff, V Mechtcherine, R Combrinck & M Wyrzykowski (eds), SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete . vol. 24, RILEM Bookseries, vol. 24, Springer, pp. 29-37. https://doi.org/10.1007/978-3-030-33342-3_4

X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar. / Rodriguez, Claudia Romero; Deprez, Maxim; de Mendonca Filho, Fernando F. et al.
SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete . ed. / William P. Boshoff; Viktor Mechtcherine; Riaan Combrinck; Mateusz Wyrzykowski. Vol. 24 Springer, 2020. p. 29-37 (RILEM Bookseries; Vol. 24).

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

TY - CHAP

T1 - X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar

AU - Rodriguez, Claudia Romero

AU - Deprez, Maxim

AU - de Mendonca Filho, Fernando F.

AU - van Offenwert, Stefanie

AU - Cnudde, Veerle

AU - Schlangen, Erik

AU - Šavija, Branko

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2020

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N2 - Superabsorbent Polymers (SAP) have been recently subject of investigation as smart admixtures for cement-based materials. The properties of these polymers enable their use for internal curing, increasing freeze/thaw resistance, boosting autogenous self-healing and providing a crack self-sealing effect in cementitious composites. Except for the earliest application, the functioning of these beneficial effects invloves the absorption by the polymers of ingress water in the hardened cementitious matrix and later release, as well as their capacity to complete multiple absorption/desorption cycles. In this work, the absorption of water in mortar with superabsorbent polymers is monitored during the first 60 min of absorption through micro-CT. The experimental series included the presence of cracks. The registration and differentiation of sub-minute (18 s) scans enabled the individuation of bulk water content distribution in the mortar with a resolution of 55 μm. The swollen volume of SAP could also be quantified and studied in time. The results point out that although embedded SAP absorb water from the matrix, this absorption is slow and reduced with respect to water absorption during mixing for the used SAP. Same effect is observed for SAP in the cracks.

AB - Superabsorbent Polymers (SAP) have been recently subject of investigation as smart admixtures for cement-based materials. The properties of these polymers enable their use for internal curing, increasing freeze/thaw resistance, boosting autogenous self-healing and providing a crack self-sealing effect in cementitious composites. Except for the earliest application, the functioning of these beneficial effects invloves the absorption by the polymers of ingress water in the hardened cementitious matrix and later release, as well as their capacity to complete multiple absorption/desorption cycles. In this work, the absorption of water in mortar with superabsorbent polymers is monitored during the first 60 min of absorption through micro-CT. The experimental series included the presence of cracks. The registration and differentiation of sub-minute (18 s) scans enabled the individuation of bulk water content distribution in the mortar with a resolution of 55 μm. The swollen volume of SAP could also be quantified and studied in time. The results point out that although embedded SAP absorb water from the matrix, this absorption is slow and reduced with respect to water absorption during mixing for the used SAP. Same effect is observed for SAP in the cracks.

KW - Concrete durability

KW - Mortar

KW - SAP

KW - X-ray micro computed tomography

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BT - SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete

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Rodriguez CR, Deprez M, de Mendonca Filho FF, van Offenwert S, Cnudde V, Schlangen E et al. X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar. In Boshoff WP, Mechtcherine V, Combrinck R, Wyrzykowski M, editors, SAP 2019: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete . Vol. 24. Springer. 2020. p. 29-37. (RILEM Bookseries). doi: 10.1007/978-3-030-33342-3_4

X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortar

Abstract

Publication series

Bibliographical note

Keywords

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Experimentally-informed numerical investigation of self-healing cement-based materials

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