Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand

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

doi:10.1051/matecconf/202236404011

Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand

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

Civil Engineering and Environmental Management

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

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Abstract

Water treatment plant sludge (WTPS) and sugarcane bagasse ash sand (SBAS) (wastes from water treatment and sugar/ethanol industries) can be used as replacements of natural sand in concrete. Thus, this paper aims to evaluate carbonation depth and chloride penetration of cementitious repair mortars produced with WTPS and SBAS. Three mortars compositions were analysed: plain reference sample (REF); sample with 3% of WTPS (3WTPS); and sample with 30% of SBAS (30SBAS). They were subjected to tests of accelerated carbonation and immersion in NaCl solution up to 84 days (12 weeks). The results showed that SBAS mortars had the best performance in relation to carbonation and chloride penetration tests. 3WTPS mortars had similar results to the reference sample. This is due to refinement of pores given by incorporation of fine waste materials making it difficult for aggressive agents to penetrate cement matrices. Therefore, 3WTPS and 30SBAS composites can be satisfactorily used in buildings repair services for more sustainable and durable construction.

Original language	English
Title of host publication	International Conference on Concrete Repair, Rehabilitation and Retrofitting
Editors	M. G. Alexander, H. Beusahausen, F. Dehn, J. Ndawula, P. Moyo
Publisher	EDP Sciences
Number of pages	6
Volume	364 (2022)
DOIs	https://doi.org/10.1051/matecconf/202236404011
Publication status	Published - 5 Oct 2022
Event	International Conference on Concrete Repair, Rehabilitation and Retrofitting - Cape Town, South Africa Duration: 3 Oct 2022 → 5 Oct 2022 https://iccrrr2022.org/ (Link to conference website)

Publication series

Name	MATEC Web of Conferences
Publisher	EDP Sciences
Volume	364 (2022)
ISSN (Electronic)	2261-236X

Conference

Conference	International Conference on Concrete Repair, Rehabilitation and Retrofitting
Abbreviated title	ICCRRR 2022
Country/Territory	South Africa
City	Cape Town
Period	3/10/22 → 5/10/22
Internet address	https://iccrrr2022.org/ (Link to conference website)

Documents and Links

10.1051/matecconf/202236404011

Hemkemeier, T. A. et al. (2022) Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand
© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Final published version, 698 KBLicence: CC BY

Cite this

Hemkemeier, T. A., C.R. Almeida, F., Sales, A., & Klemm, A. (2022). Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand. In M. G. Alexander, H. Beusahausen, F. Dehn, J. Ndawula, & P. Moyo (Eds.), International Conference on Concrete Repair, Rehabilitation and Retrofitting (Vol. 364 (2022)). Article 04011 (MATEC Web of Conferences; Vol. 364 (2022)). EDP Sciences. https://doi.org/10.1051/matecconf/202236404011

Hemkemeier, Thiago A. ; C.R. Almeida, Fernando ; Sales, Almir et al. / Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand. International Conference on Concrete Repair, Rehabilitation and Retrofitting. editor / M. G. Alexander ; H. Beusahausen ; F. Dehn ; J. Ndawula ; P. Moyo. Vol. 364 (2022) EDP Sciences, 2022. (MATEC Web of Conferences).

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title = "Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand",

abstract = "Water treatment plant sludge (WTPS) and sugarcane bagasse ash sand (SBAS) (wastes from water treatment and sugar/ethanol industries) can be used as replacements of natural sand in concrete. Thus, this paper aims to evaluate carbonation depth and chloride penetration of cementitious repair mortars produced with WTPS and SBAS. Three mortars compositions were analysed: plain reference sample (REF); sample with 3% of WTPS (3WTPS); and sample with 30% of SBAS (30SBAS). They were subjected to tests of accelerated carbonation and immersion in NaCl solution up to 84 days (12 weeks). The results showed that SBAS mortars had the best performance in relation to carbonation and chloride penetration tests. 3WTPS mortars had similar results to the reference sample. This is due to refinement of pores given by incorporation of fine waste materials making it difficult for aggressive agents to penetrate cement matrices. Therefore, 3WTPS and 30SBAS composites can be satisfactorily used in buildings repair services for more sustainable and durable construction.",

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Hemkemeier, TA, C.R. Almeida, F, Sales, A & Klemm, A 2022, Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand. in MG Alexander, H Beusahausen, F Dehn, J Ndawula & P Moyo (eds), International Conference on Concrete Repair, Rehabilitation and Retrofitting. vol. 364 (2022), 04011, MATEC Web of Conferences, vol. 364 (2022), EDP Sciences, International Conference on Concrete Repair, Rehabilitation and Retrofitting, Cape Town, South Africa, 3/10/22. https://doi.org/10.1051/matecconf/202236404011

Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand. / Hemkemeier, Thiago A.; C.R. Almeida, Fernando; Sales, Almir et al.
International Conference on Concrete Repair, Rehabilitation and Retrofitting. ed. / M. G. Alexander; H. Beusahausen; F. Dehn; J. Ndawula; P. Moyo. Vol. 364 (2022) EDP Sciences, 2022. 04011 (MATEC Web of Conferences; Vol. 364 (2022)).

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

TY - GEN

T1 - Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand

AU - Hemkemeier, Thiago A.

AU - C.R. Almeida, Fernando

AU - Sales, Almir

AU - Klemm, Agnieszka

PY - 2022/10/5

Y1 - 2022/10/5

N2 - Water treatment plant sludge (WTPS) and sugarcane bagasse ash sand (SBAS) (wastes from water treatment and sugar/ethanol industries) can be used as replacements of natural sand in concrete. Thus, this paper aims to evaluate carbonation depth and chloride penetration of cementitious repair mortars produced with WTPS and SBAS. Three mortars compositions were analysed: plain reference sample (REF); sample with 3% of WTPS (3WTPS); and sample with 30% of SBAS (30SBAS). They were subjected to tests of accelerated carbonation and immersion in NaCl solution up to 84 days (12 weeks). The results showed that SBAS mortars had the best performance in relation to carbonation and chloride penetration tests. 3WTPS mortars had similar results to the reference sample. This is due to refinement of pores given by incorporation of fine waste materials making it difficult for aggressive agents to penetrate cement matrices. Therefore, 3WTPS and 30SBAS composites can be satisfactorily used in buildings repair services for more sustainable and durable construction.

AB - Water treatment plant sludge (WTPS) and sugarcane bagasse ash sand (SBAS) (wastes from water treatment and sugar/ethanol industries) can be used as replacements of natural sand in concrete. Thus, this paper aims to evaluate carbonation depth and chloride penetration of cementitious repair mortars produced with WTPS and SBAS. Three mortars compositions were analysed: plain reference sample (REF); sample with 3% of WTPS (3WTPS); and sample with 30% of SBAS (30SBAS). They were subjected to tests of accelerated carbonation and immersion in NaCl solution up to 84 days (12 weeks). The results showed that SBAS mortars had the best performance in relation to carbonation and chloride penetration tests. 3WTPS mortars had similar results to the reference sample. This is due to refinement of pores given by incorporation of fine waste materials making it difficult for aggressive agents to penetrate cement matrices. Therefore, 3WTPS and 30SBAS composites can be satisfactorily used in buildings repair services for more sustainable and durable construction.

U2 - 10.1051/matecconf/202236404011

DO - 10.1051/matecconf/202236404011

M3 - Conference contribution

VL - 364 (2022)

T3 - MATEC Web of Conferences

BT - International Conference on Concrete Repair, Rehabilitation and Retrofitting

A2 - Alexander, M. G.

A2 - Beusahausen, H.

A2 - Dehn, F.

A2 - Ndawula, J.

A2 - Moyo, P.

PB - EDP Sciences

T2 - International Conference on Concrete Repair, Rehabilitation and Retrofitting

Y2 - 3 October 2022 through 5 October 2022

ER -

Hemkemeier TA, C.R. Almeida F, Sales A, Klemm A. Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand. In Alexander MG, Beusahausen H, Dehn F, Ndawula J, Moyo P, editors, International Conference on Concrete Repair, Rehabilitation and Retrofitting. Vol. 364 (2022). EDP Sciences. 2022. 04011. (MATEC Web of Conferences). Epub 2022 Sept 30. doi: 10.1051/matecconf/202236404011

Carbonation and chloride penetration of repair mortars with water treatment plant sludge and sugarcane bagasse ash sand

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