Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland: CRT Report No. R-190

Nick Scaglione; Paul Dunlop

Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland: CRT Report No. R-190

Nick Scaglione
, Paul Dunlop (Supporting Author)

Concrete Research & Testing LLC

Research output: Book/Report › Commissioned report

56 Downloads (Pure)

Abstract

Concrete Research & Testing (CRT) is part of an international research consortium along with Ulster University, Empa, University of Connecticut, and Université Laval. The consortium has been funded by the Department of Housing, Local Government and Heritage and the Geological Survey of Ireland to investigate the cause of concrete failure in defective properties in County Donegal. CRT’s role in the consortium is to perform petrographic examinations on concrete samples removed from four residences in County Donegal, Ireland to investigate the cause of concrete failure. Three of the residences exhibit cracking distress of the block walls and had been previously assessed by Donegal County Council following I.S. 465 protocols that confirmed they were constructed from defective concrete blocks. The fourth residence was chosen as a control and had no cracking distress related to defective concrete.

Original language	English
Commissioning body	Geological Survey of Ireland
Number of pages	251
Publication status	Published (in print/issue) - 28 Mar 2025
Event	Defective Concrete Conference 2025: Research Challenges and the Impact of Ireland’s Defective Concrete Crisis - An Grianan Hotel, Burt, County Donegal, Ireland Duration: 12 Apr 2025 → 12 Apr 2025 https://www.defectiveconcreteconference2025.ie/

Funding

Laboratory Analysis Services in support of Geological Survey Ireland’s “Irish Construction Materials” Project: Concrete Products. Funded by Geological Survey Ireland and the Irish Government Department of Housing, Local Government and Heritage.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities
SDG 12 Responsible Consumption and Production

Keywords

pyrrhotite
defective concrete
internal sulfate attack
mica
petrography

Access to Document

Ulster University research consortium report: CRT Report No. R-190 - Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, IrelandFinal published version, 35.8 MBLicence: Unspecified

Cite this

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title = "Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland: CRT Report No. R-190",

abstract = "Concrete Research \& Testing (CRT) is part of an international research consortium along with Ulster University, Empa, University of Connecticut, and Universit{\'e} Laval. The consortium has been funded by the Department of Housing, Local Government and Heritage and the Geological Survey of Ireland to investigate the cause of concrete failure in defective properties in County Donegal. CRT{\textquoteright}s role in the consortium is to perform petrographic examinations on concrete samples removed from four residences in County Donegal, Ireland to investigate the cause of concrete failure. Three of the residences exhibit cracking distress of the block walls and had been previously assessed by Donegal County Council following I.S. 465 protocols that confirmed they were constructed from defective concrete blocks. The fourth residence was chosen as a control and had no cracking distress related to defective concrete.",

keywords = "pyrrhotite, defective concrete, internal sulfate attack, mica, petrography",

author = "Nick Scaglione and Paul Dunlop",

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note = "Defective Concrete Conference 2025 : Research Challenges and the Impact of Ireland{\textquoteright}s Defective Concrete Crisis ; Conference date: 12-04-2025 Through 12-04-2025",

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T1 - Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland

T2 - Defective Concrete Conference 2025

AU - Scaglione, Nick

AU - Dunlop, Paul

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Y1 - 2025/3/28

N2 - Concrete Research & Testing (CRT) is part of an international research consortium along with Ulster University, Empa, University of Connecticut, and Université Laval. The consortium has been funded by the Department of Housing, Local Government and Heritage and the Geological Survey of Ireland to investigate the cause of concrete failure in defective properties in County Donegal. CRT’s role in the consortium is to perform petrographic examinations on concrete samples removed from four residences in County Donegal, Ireland to investigate the cause of concrete failure. Three of the residences exhibit cracking distress of the block walls and had been previously assessed by Donegal County Council following I.S. 465 protocols that confirmed they were constructed from defective concrete blocks. The fourth residence was chosen as a control and had no cracking distress related to defective concrete.

AB - Concrete Research & Testing (CRT) is part of an international research consortium along with Ulster University, Empa, University of Connecticut, and Université Laval. The consortium has been funded by the Department of Housing, Local Government and Heritage and the Geological Survey of Ireland to investigate the cause of concrete failure in defective properties in County Donegal. CRT’s role in the consortium is to perform petrographic examinations on concrete samples removed from four residences in County Donegal, Ireland to investigate the cause of concrete failure. Three of the residences exhibit cracking distress of the block walls and had been previously assessed by Donegal County Council following I.S. 465 protocols that confirmed they were constructed from defective concrete blocks. The fourth residence was chosen as a control and had no cracking distress related to defective concrete.

KW - pyrrhotite

KW - defective concrete

KW - internal sulfate attack

KW - mica

KW - petrography

UR - https://www.gsi.ie/en-ie/events-and-news/news/Pages/Aggregates-Research-Findings.aspx

UR - https://pure.ulster.ac.uk/en/publications/0508bd3c-fccd-42ac-9318-e31d17ce26e8

M3 - Commissioned report

BT - Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland

Y2 - 12 April 2025 through 12 April 2025

ER -

Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland: CRT Report No. R-190

Abstract

Funding

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Living the Crisis, Leading the Science: Activism, Evidence and Changing the Narrative of the Irish Defective Concrete Crisis

From Mica to Pyrrhotite: Charting the impacts of scientific research on Irish standards and the government grant scheme to remediate defective concrete homes in Ireland

Investigation and Analysis of Concrete Blocks from Ireland

Not Mica: From Micaceous Myths to Sulfide Science

Greg Hughs Show

Cite this

Petrographic Examination of Concrete Samples Removed from Four Residences in County Donegal, Ireland: CRT Report No. R-190

Abstract

Funding

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Activities

Living the Crisis, Leading the Science: Activism, Evidence and Changing the Narrative of the Irish Defective Concrete Crisis

Research output

From Mica to Pyrrhotite: Charting the impacts of scientific research on Irish standards and the government grant scheme to remediate defective concrete homes in Ireland

Investigation and Analysis of Concrete Blocks from Ireland

Not Mica: From Micaceous Myths to Sulfide Science

Press/Media

Greg Hughs Show

Cite this