Defects in brickwork - Revision history

Designing Buildings at 10:14, 9 January 2023

2023-01-09T10:14:10Z

← Older revision		Revision as of 10:14, 9 January 2023
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	* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.		* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Basic brickwork replacement.		* Basic brickwork replacement.
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	* Why do buildings crack? (DG 361).		* Why do buildings crack? (DG 361).

−	[[Category:~~Conservation~~]] [[Category:~~DCN_Definition~~]] [[Category:~~DCN_Guidance~~]] [[Category:~~DCN_Product_Knowledge~~]] [[Category:~~Construction_techniques~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]] [[Category:Conservation]]

Editor: Reverted edits by 85.31.139.132 (talk) to last revision by Editor

2021-05-12T11:37:47Z

Reverted edits by 85.31.139.132 (talk) to last revision by Editor

← Older revision		Revision as of 11:37, 12 May 2021
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	Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.		Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.

−	= spalling, with the brick face flaking off and/or crumbling. Mortar is also subject to frost attack. In a deteriorating state both elements more readily absorb water which in turn increases the rate of frost damage. =	+	= Frost attack/damage =
		+
		+	Frost attack/damage is a common problem that usually occurs in older bricks, and those that were underburnt during the firing process. In newer construction, failure through frost attack tends to be confined to areas of severe exposure, or where the frost resistance of the brick was incorrectly specified.
		+
		+	The ability of brick to resist frost attack is determined by their pore structure (in particular the percentage of fine pores in the brick). Frost attack occurs through a combination of excessively wet brickwork and freezing temperatures.
		+
		+	When water turns to ice, there is a 9% increase in its volume. This expansion can produce stress within the brick, which causes spalling, with the brick face flaking off and/or crumbling. Mortar is also subject to frost attack. In a deteriorating state both elements more readily absorb water which in turn increases the rate of frost damage.

	[[File:BrickFrostDamage.jpg\|link=File:BrickFrostDamage.jpg]]		[[File:BrickFrostDamage.jpg\|link=File:BrickFrostDamage.jpg]]
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	* Why do buildings crack? (DG 361).		* Why do buildings crack? (DG 361).

−	[[Category:~~DCN_Definition~~]] [[Category:~~DCN_Guidance~~]] [[Category:~~DCN_Product_Knowledge~~]] [[Category:~~Construction_techniques~~]] [[Category:~~Conservation~~]]	+	[[Category:Conservation]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]]

85.31.139.132 at 10:44, 12 May 2021

2021-05-12T10:44:45Z

← Older revision		Revision as of 10:44, 12 May 2021
Line 3:		Line 3:
	Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.		Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.

−	= ~~Frost attack/damage =~~	+	= spalling, with the brick face flaking off and/or crumbling. Mortar is also subject to frost attack. In a deteriorating state both elements more readily absorb water which in turn increases the rate of frost damage. =
−		+
−	Frost attack/damage is a common problem that usually occurs in older bricks, and those that were underburnt during the firing process. In newer construction, failure through frost attack tends to be confined to areas of severe exposure, or where the frost resistance of the brick was incorrectly specified.	+
−		+
−	The ability of brick to resist frost attack is determined by their pore structure (in particular the percentage of fine pores in the brick). Frost attack occurs through a combination of excessively wet brickwork and freezing temperatures.	+
−		+
−	~~When water turns to ice, there is a 9% increase in its volume. This expansion can produce stress within the brick, which causes~~ spalling, with the brick face flaking off and/or crumbling. Mortar is also subject to frost attack. In a deteriorating state both elements more readily absorb water which in turn increases the rate of frost damage.	+

	[[File:BrickFrostDamage.jpg\|link=File:BrickFrostDamage.jpg]]		[[File:BrickFrostDamage.jpg\|link=File:BrickFrostDamage.jpg]]
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	* Why do buildings crack? (DG 361).		* Why do buildings crack? (DG 361).

−	[[Category:~~Conservation~~]] [[Category:~~DCN_Definition~~]] [[Category:~~DCN_Guidance~~]] [[Category:~~DCN_Product_Knowledge~~]] [[Category:~~Construction_techniques~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]] [[Category:Conservation]]

Editor at 19:55, 15 April 2021

2021-04-15T19:55:02Z

← Older revision		Revision as of 19:55, 15 April 2021
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* Basic brickwork replacement.
	* Blockwork.		* Blockwork.
	* Brick.		* Brick.

Editor at 18:13, 24 March 2021

2021-03-24T18:13:06Z

← Older revision		Revision as of 18:13, 24 March 2021
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	* Defects in dot and dab.		* Defects in dot and dab.
	* Defects in stonework.		* Defects in stonework.
		+	* Does damp proofing work?
	* Efflorescence.		* Efflorescence.
	* How to lay bricks.		* How to lay bricks.

Designing Buildings at 10:38, 29 October 2020

2020-10-29T10:38:24Z

← Older revision		Revision as of 10:38, 29 October 2020
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	* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.		* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.
	* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.		* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.
−
−	~~{{:IG_masonry_cta_setup}}~~

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Designing Buildings at 09:11, 18 September 2020

2020-09-18T09:11:50Z

← Older revision		Revision as of 09:11, 18 September 2020
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	* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.		* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.
	* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.		* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.
		+
		+	{{:IG_masonry_cta_setup}}

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Designing Buildings at 09:02, 18 September 2020

2020-09-18T09:02:31Z

← Older revision		Revision as of 09:02, 18 September 2020
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		+	= Introduction =
		+
	Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.		Defects can arise in new brickwork because of poor design or specification, the use of sub-standard materials and poor standards of workmanship.

Line 183:		Line 185:
	* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.		* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.
	* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.		* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.
−
−	~~{{:Keystone_cta_setup}}~~

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Designing Buildings at 13:43, 28 August 2020

2020-08-28T13:43:28Z

← Older revision		Revision as of 13:43, 28 August 2020
Line 224:		Line 224:
	* Why do buildings crack? (DG 361).		* Why do buildings crack? (DG 361).

−	[[Category:Conservation]] [[Category:Construction_techniques]]	+	[[Category:Conservation]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]]

Designing Buildings at 08:43, 17 August 2020

2020-08-17T08:43:58Z

← Older revision		Revision as of 08:43, 17 August 2020
Line 183:		Line 183:
	* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.		* Recessed joints are problematical because they do not easily shed rainwater but allow it to sit on the edge of the brick and, although tooling may compress and seal the joint, the brick is at high risk. Recessed joints should only be used on brickwork that is not exposed to rain and with bricks that are excellent at resisting frost damage, e.g. engineering bricks.
	* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.		* Flush joints often leave small cracks between the brick and the mortar. Also, the mortar is often ‘buttered over’ (mortar on the face of the bricks) the joint, increasing the likelihood of water penetration.
		+
		+	{{:Keystone_cta_setup}}

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =