Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Standard

Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. / Molnár, Miklós; Larsson, Oskar.

Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. ed. / C. Modena; F. da Porta; M.R. Valluzzi. CRC Press/Balkema, 2016. p. 541-546.

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Harvard

Molnár, M & Larsson, O 2016, Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. in C Modena, F da Porta & MR Valluzzi (eds), Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. CRC Press/Balkema, pp. 541-546, 16th International Brick and Block Masonry Conference, Padova, Italy, 2016/06/26. https://doi.org/10.1201/b21889-71

APA

Molnár, M., & Larsson, O. (2016). Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. In C. Modena, F. da Porta, & M. R. Valluzzi (Eds.), Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016 (pp. 541-546). CRC Press/Balkema. https://doi.org/10.1201/b21889-71

CBE

Molnár M, Larsson O. 2016. Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. Modena C, da Porta F, Valluzzi MR, editors. In Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. CRC Press/Balkema. pp. 541-546. https://doi.org/10.1201/b21889-71

MLA

Molnár, Miklós and Oskar Larsson "Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey"., Modena, C. da Porta, F. Valluzzi, M.R. (editors). Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. CRC Press/Balkema. 2016, 541-546. https://doi.org/10.1201/b21889-71

Vancouver

Molnár M, Larsson O. Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. In Modena C, da Porta F, Valluzzi MR, editors, Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. CRC Press/Balkema. 2016. p. 541-546 https://doi.org/10.1201/b21889-71

Author

Molnár, Miklós ; Larsson, Oskar. / Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey. Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016. editor / C. Modena ; F. da Porta ; M.R. Valluzzi. CRC Press/Balkema, 2016. pp. 541-546

RIS

TY - GEN

T1 - Corrosion of bed joint reinforcement in faced single-leaf brick facades - field survey

AU - Molnár, Miklós

AU - Larsson, Oskar

PY - 2016/6/26

Y1 - 2016/6/26

N2 - Bed joint reinforcement consisting of unprotected carbon steel was widely used to bridge windows and other openings in post-war brick buildings in the Scandinavian countries. Today, cracking caused by reinforcement corrosion constitute an increasing technical and economic problem, since removal of the corroding reinforcement can be both labour intensive and costly. Retrofitting measures are usually only based on an ocular inspection of the crack frequency, which give sub-optimal retrofitting results due to a lack of knowledge concerning the actual corrosion damage in the wall. The extent of retrofitting measures varies between partial removal of reinforcement from cracked joints to the removal of all reinforcement. This practice is problematic, since the level of retrofitting is not related, in a rational way, to the expected future development of the corrosion related damage. The objective of the presented field survey is to increase knowledge about factors influencing corrosion of bed joint reinforcement and by this provide input to development of rational decision making tools concerning retrofitting. The field survey deals with ocular examination of cracking and decay related to corrosion of reinforcement embedded in joints above windows and other openings. The field survey is complemented by examination and measurement of the corrosion depth in reinforcement collected from the field. The results show a strong dependence of crack formation on the corrosion depth of the embedded reinforcement related to differences in hygro-thermal conditions in the facade, that in turn depend on e.g. orientation, height, sheltering and the number of reinforcement bars in the bed joints.

AB - Bed joint reinforcement consisting of unprotected carbon steel was widely used to bridge windows and other openings in post-war brick buildings in the Scandinavian countries. Today, cracking caused by reinforcement corrosion constitute an increasing technical and economic problem, since removal of the corroding reinforcement can be both labour intensive and costly. Retrofitting measures are usually only based on an ocular inspection of the crack frequency, which give sub-optimal retrofitting results due to a lack of knowledge concerning the actual corrosion damage in the wall. The extent of retrofitting measures varies between partial removal of reinforcement from cracked joints to the removal of all reinforcement. This practice is problematic, since the level of retrofitting is not related, in a rational way, to the expected future development of the corrosion related damage. The objective of the presented field survey is to increase knowledge about factors influencing corrosion of bed joint reinforcement and by this provide input to development of rational decision making tools concerning retrofitting. The field survey deals with ocular examination of cracking and decay related to corrosion of reinforcement embedded in joints above windows and other openings. The field survey is complemented by examination and measurement of the corrosion depth in reinforcement collected from the field. The results show a strong dependence of crack formation on the corrosion depth of the embedded reinforcement related to differences in hygro-thermal conditions in the facade, that in turn depend on e.g. orientation, height, sheltering and the number of reinforcement bars in the bed joints.

KW - brick walls

KW - bed joint reinforcement

KW - corrosion

KW - cracking

U2 - 10.1201/b21889-71

DO - 10.1201/b21889-71

M3 - Paper in conference proceeding

SN - 978-1-138-02999-6

SP - 541

EP - 546

BT - Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016

A2 - Modena, C.

A2 - da Porta, F.

A2 - Valluzzi, M.R.

PB - CRC Press/Balkema

T2 - 16th International Brick and Block Masonry Conference

Y2 - 26 June 2016 through 30 June 2016

ER -