Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers

Thiago A. Hemkemeier; Fernando C. R. Almeida; Almir Sales; Agnieszka J. Klemm

doi:10.1007/978-3-031-75507-1_22

Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers

Thiago A. Hemkemeier^*, Fernando C. R. Almeida, Almir Sales, Agnieszka J. Klemm

^*Corresponding author for this work

SCEBE School Office

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Sugarcane bagasse ash sand (SBAS), a by-product of sugar and ethanol industries, can be used as a partial replacement of natural sand in production of eco-efficient concrete and mortars. Due to its finer particles, incorporation of SBAS results in refinement of pores in cementitious composites. This in turn leads to greater cracking susceptibility triggered by self-desiccation processes in autogenous shrinkage. To mitigate this problem, superabsorbent polymers (SAP) can be used as internal curing agents. This study aims to evaluate autogenous shrinkage and mechanical properties of cementitious composites with SBAS modified by SAP. Mortars were produced with 30% SBAS, and three types of SAP with different water absorption capacities. The results indicate high efficiency of SAP in controlling water supply for cement hydration, reducing autogenous shrinkage by up to 67% in relation to the reference mixture without SAP and SBAS. Flexural and compressive strengths were not significantly affected by SAP when compared to the reference samples. Therefore, application of SAP in such composites could notably improve durability of eco-efficient concretes.

Original language	English
Title of host publication	Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024
Editors	Hans Beushausen, Joanitta Ndawula, Mark Alexander, Frank Dehn, Pilate Moyo
Publisher	Springer, Cham
Pages	223-232
Number of pages	10
Volume	59
ISBN (Electronic)	9783031755071
ISBN (Print)	9783031755064
DOIs	https://doi.org/10.1007/978-3-031-75507-1_22
Publication status	Published - 1 Nov 2024
Event	7th International Conference on Concrete Repair, Rehabilitation and Retrofitting - University of Cape Town, Cape Town, South Africa Duration: 4 Nov 2024 → 6 Nov 2024 http://iccrrr.org/ (Link to conference website)

Publication series

Name	RILEM Bookseries
Volume	59
ISSN (Print)	2211-0844
ISSN (Electronic)	2211-0852

Conference

Conference	7th International Conference on Concrete Repair, Rehabilitation and Retrofitting
Abbreviated title	ICCRRR 2024
Country/Territory	South Africa
City	Cape Town
Period	4/11/24 → 6/11/24
Internet address	http://iccrrr.org/ (Link to conference website)

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Mechanics of Materials

Documents and Links

10.1007/978-3-031-75507-1_22

Embargoed Document

Author accepted manuscript
Author accepted manuscript, 468 KB
Embargo ends: 1/11/25

Cite this

Hemkemeier, T. A., Almeida, F. C. R., Sales, A., & Klemm, A. J. (2024). Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers. In H. Beushausen, J. Ndawula, M. Alexander, F. Dehn, & P. Moyo (Eds.), Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024 (Vol. 59, pp. 223-232). (RILEM Bookseries; Vol. 59). Springer, Cham. https://doi.org/10.1007/978-3-031-75507-1_22

Hemkemeier, Thiago A. ; Almeida, Fernando C. R. ; Sales, Almir et al. / Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers. Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024. editor / Hans Beushausen ; Joanitta Ndawula ; Mark Alexander ; Frank Dehn ; Pilate Moyo. Vol. 59 Springer, Cham, 2024. pp. 223-232 (RILEM Bookseries).

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title = "Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers",

abstract = "Sugarcane bagasse ash sand (SBAS), a by-product of sugar and ethanol industries, can be used as a partial replacement of natural sand in production of eco-efficient concrete and mortars. Due to its finer particles, incorporation of SBAS results in refinement of pores in cementitious composites. This in turn leads to greater cracking susceptibility triggered by self-desiccation processes in autogenous shrinkage. To mitigate this problem, superabsorbent polymers (SAP) can be used as internal curing agents. This study aims to evaluate autogenous shrinkage and mechanical properties of cementitious composites with SBAS modified by SAP. Mortars were produced with 30% SBAS, and three types of SAP with different water absorption capacities. The results indicate high efficiency of SAP in controlling water supply for cement hydration, reducing autogenous shrinkage by up to 67% in relation to the reference mixture without SAP and SBAS. Flexural and compressive strengths were not significantly affected by SAP when compared to the reference samples. Therefore, application of SAP in such composites could notably improve durability of eco-efficient concretes.",

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booktitle = "Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024",

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Hemkemeier, TA, Almeida, FCR, Sales, A & Klemm, AJ 2024, Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers. in H Beushausen, J Ndawula, M Alexander, F Dehn & P Moyo (eds), Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024. vol. 59, RILEM Bookseries, vol. 59, Springer, Cham, pp. 223-232, 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting, Cape Town, South Africa, 4/11/24. https://doi.org/10.1007/978-3-031-75507-1_22

Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers. / Hemkemeier, Thiago A.; Almeida, Fernando C. R.; Sales, Almir et al.
Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024. ed. / Hans Beushausen; Joanitta Ndawula; Mark Alexander; Frank Dehn; Pilate Moyo. Vol. 59 Springer, Cham, 2024. p. 223-232 (RILEM Bookseries; Vol. 59).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers

AU - Hemkemeier, Thiago A.

AU - Almeida, Fernando C. R.

AU - Sales, Almir

AU - Klemm, Agnieszka J.

PY - 2024/11/1

Y1 - 2024/11/1

N2 - Sugarcane bagasse ash sand (SBAS), a by-product of sugar and ethanol industries, can be used as a partial replacement of natural sand in production of eco-efficient concrete and mortars. Due to its finer particles, incorporation of SBAS results in refinement of pores in cementitious composites. This in turn leads to greater cracking susceptibility triggered by self-desiccation processes in autogenous shrinkage. To mitigate this problem, superabsorbent polymers (SAP) can be used as internal curing agents. This study aims to evaluate autogenous shrinkage and mechanical properties of cementitious composites with SBAS modified by SAP. Mortars were produced with 30% SBAS, and three types of SAP with different water absorption capacities. The results indicate high efficiency of SAP in controlling water supply for cement hydration, reducing autogenous shrinkage by up to 67% in relation to the reference mixture without SAP and SBAS. Flexural and compressive strengths were not significantly affected by SAP when compared to the reference samples. Therefore, application of SAP in such composites could notably improve durability of eco-efficient concretes.

AB - Sugarcane bagasse ash sand (SBAS), a by-product of sugar and ethanol industries, can be used as a partial replacement of natural sand in production of eco-efficient concrete and mortars. Due to its finer particles, incorporation of SBAS results in refinement of pores in cementitious composites. This in turn leads to greater cracking susceptibility triggered by self-desiccation processes in autogenous shrinkage. To mitigate this problem, superabsorbent polymers (SAP) can be used as internal curing agents. This study aims to evaluate autogenous shrinkage and mechanical properties of cementitious composites with SBAS modified by SAP. Mortars were produced with 30% SBAS, and three types of SAP with different water absorption capacities. The results indicate high efficiency of SAP in controlling water supply for cement hydration, reducing autogenous shrinkage by up to 67% in relation to the reference mixture without SAP and SBAS. Flexural and compressive strengths were not significantly affected by SAP when compared to the reference samples. Therefore, application of SAP in such composites could notably improve durability of eco-efficient concretes.

U2 - 10.1007/978-3-031-75507-1_22

DO - 10.1007/978-3-031-75507-1_22

M3 - Conference contribution

AN - SCOPUS:85208990225

SN - 9783031755064

VL - 59

T3 - RILEM Bookseries

SP - 223

EP - 232

BT - Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024

A2 - Beushausen, Hans

A2 - Ndawula, Joanitta

A2 - Alexander, Mark

A2 - Dehn, Frank

A2 - Moyo, Pilate

PB - Springer, Cham

T2 - 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting

Y2 - 4 November 2024 through 6 November 2024

ER -

Hemkemeier TA, Almeida FCR, Sales A, Klemm AJ. Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers. In Beushausen H, Ndawula J, Alexander M, Dehn F, Moyo P, editors, Proceedings of the 7th International Conference on Concrete Repair, Rehabilitation and Retrofitting: ICCRRR 2024. Vol. 59. Springer, Cham. 2024. p. 223-232. (RILEM Bookseries). doi: 10.1007/978-3-031-75507-1_22

Autogenous shrinkage and mechanical properties of eco-efficient cementitious composites modified by superabsorbent polymers

Abstract

Publication series

Conference

ASJC Scopus subject areas

Documents and Links

Embargoed Document

Fingerprint

Cite this