Concrete blocks and pyrite: update

Pyrite In Concrete Blocks at Moneymore, Drogheda, Co. Louth

The Irish Independent reports that demolition has started for six houses in Moneymore, following discovery of pyrite damage to the concrete blocks. 19 other homes in the scheme have been tested for pyrite but a decision on their fate has not yet been announced.

Seaview Park, Shankill, Dublin

RTE reports that four houses are undergoing demolition in Shankill due to pyrite in the blockwork.

pyrite remediation scheme

Meanwhile, the Minister for the Environment, Phil Hogan, has been asked to extend the Pyrite Remediation Scheme to cover pyrite damage to building blocks.… Read the rest

Concrete blockwork & pyrite: investigations

pyrite in concrete blockwork

Following guidance from the The Royal Institute of the Architects of Ireland (RIAI) and Association of Consulting Engineers of Ireland (ACEI) (see previous post), RTE news reports that local authorities are starting investigations into concrete blockwork with possible pyrite problems at a number of sites, including areas in Leinster.

RTE news, describing a statement issued by the Department of the Environment, suggests that the “allegedly defective blocks” supplier had been co-operating with the investigation. The block manufacturers have not been named.

The news comes as the Irish Independent reports that six homes in a new Drogheda housing estate are to be demolished as a result of pyrite found in concrete building blocks.… Read the rest

Pyrite in masonry blocks: ACEI publish advice

pyrite in masonry blocks – ACEI Guidance note

The Association of Consulting Engineers Ireland (ACEI) have published, on 15th May 2014, an interim advice note on the presence of pyrite in masonry blocks stating:

“It has come to the attention of the ACE that there have been recent instances of apparent pyrite content in concrete blocks provided by block manufacturers.

In cases reported the affected blocks were noted to have a brown discoloration. The physical strength characteristics diminished over short period of time, particularly when exposed to moisture.

The ACEI are concerned about these occurrences and recommend all member firms request assurance from suppliers that materials are free of deleterious materials and that a representative sample of blocks be tested for pyrite content by chemical analysis.”

RIAI Guidance issued

An email sent to members of the The Royal Institute of The Architects of Ireland (RIAI) on the 29th May 2014 was posted on the Pyrite Action Facebook group and adds more detail to the pyrite problem

“A number of RIAI Practices have brought to the attention of the RIAI problems encountered on projects in the Leinster region with conrete blocks that contain pyrite.

Read the rest