Capillary action - Revision history

Designing Buildings at 07:45, 28 June 2022

2022-06-28T07:45:40Z

← Older revision		Revision as of 07:45, 28 June 2022
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	* Building science.		* Building science.
	* Capillary active material.		* Capillary active material.
		+	* Capillary break.
	* Chemical injected DPC.		* Chemical injected DPC.
	* Damp.		* Damp.

Designing Buildings at 07:43, 28 June 2022

2022-06-28T07:43:21Z

← Older revision		Revision as of 07:43, 28 June 2022
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	[https://www.historicenvironment.scot/archives-and-research/publications/publication/?publicationId=1122c09b-8c2b-442b-8bfd-accd0117b1ef Technical paper 35: Moisture measurement in the historic environment], published by Historic Environment Scotland in 2021, defines capillarity as: ‘The tendency of a liquid in an absorbent material to move as a result of surface tension.’ It suggest that capillary rise is: ‘...controlled by capillarity - the rise of a liquid in an absorbent material above the level that would be influenced solely by atmospheric pressure.’		[https://www.historicenvironment.scot/archives-and-research/publications/publication/?publicationId=1122c09b-8c2b-442b-8bfd-accd0117b1ef Technical paper 35: Moisture measurement in the historic environment], published by Historic Environment Scotland in 2021, defines capillarity as: ‘The tendency of a liquid in an absorbent material to move as a result of surface tension.’ It suggest that capillary rise is: ‘...controlled by capillarity - the rise of a liquid in an absorbent material above the level that would be influenced solely by atmospheric pressure.’

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

	* Blockwork.		* Blockwork.
	* Building damp-free cavity walls.		* Building damp-free cavity walls.
	* Building science.		* Building science.
		+	* Capillary active material.
	* Chemical injected DPC.		* Chemical injected DPC.
	* Damp.		* Damp.

Designing Buildings at 05:44, 31 March 2022

2022-03-31T05:44:01Z

← Older revision		Revision as of 05:44, 31 March 2022
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	* Vapour barrier.		* Vapour barrier.

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory~~]] [[Category:Products_/_components~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]]

Designing Buildings at 07:13, 24 March 2021

2021-03-24T07:13:17Z

← Older revision		Revision as of 07:13, 24 March 2021
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	Leonardo da Vinci is regarded as being the first person to observe and record capillary action.		Leonardo da Vinci is regarded as being the first person to observe and record capillary action.
		+
		+	NB
		+
		+	[https://www.historicenvironment.scot/archives-and-research/publications/publication/?publicationId=1122c09b-8c2b-442b-8bfd-accd0117b1ef Technical paper 35: Moisture measurement in the historic environment], published by Historic Environment Scotland in 2021, defines capillarity as: ‘The tendency of a liquid in an absorbent material to move as a result of surface tension.’ It suggest that capillary rise is: ‘...controlled by capillarity - the rise of a liquid in an absorbent material above the level that would be influenced solely by atmospheric pressure.’

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

Designing Buildings at 07:23, 18 November 2020

2020-11-18T07:23:25Z

← Older revision		Revision as of 07:23, 18 November 2020
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	* Vapour barrier.		* Vapour barrier.

−	[[Category:~~Theory~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]] [[Category:Products_/_components]]

Editor at 18:01, 26 May 2020

2020-05-26T18:01:36Z

← Older revision		Revision as of 18:01, 26 May 2020
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	* Rising damp.		* Rising damp.
	* Rising damp in walls - diagnosis and treatment (DG 245).		* Rising damp in walls - diagnosis and treatment (DG 245).
		+	* Tempering heating.
	* Vapour barrier.		* Vapour barrier.

−	[[Category:Theory]] [[Category:Products_/_components]]	+	[[Category:Theory]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 15:59, 17 October 2019

2019-10-17T15:59:15Z

← Older revision		Revision as of 15:59, 17 October 2019
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	{\|		{\|
−	\| [[File:~~Capillary action~~.jpg]]	+	\| [[File:Capillary_action.jpg\|link=File:Capillary_action.jpg]]
	\|-		\|-
	\| Capillary action causes the water in the thinnest tube to rise to a higher level than in the other tubes		\| Capillary action causes the water in the thinnest tube to rise to a higher level than in the other tubes
	\|}		\|}
		+
		+	= Introduction =

	Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within materials. It is sometimes referred to as capillary attraction, capillarity or wicking.		Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within materials. It is sometimes referred to as capillary attraction, capillarity or wicking.
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	The movement is due to the surface tension that results when liquid or moisture is contained within very fine spaces or tubes (capillaries). Essentially, the liquid is attracted to the sides of the container; the smaller the space, the greater the attraction. Examples of capillarity include the action observed when a paper towel or blotting paper absorb water, and the way oil travels up a wick in oil lamps.		The movement is due to the surface tension that results when liquid or moisture is contained within very fine spaces or tubes (capillaries). Essentially, the liquid is attracted to the sides of the container; the smaller the space, the greater the attraction. Examples of capillarity include the action observed when a paper towel or blotting paper absorb water, and the way oil travels up a wick in oil lamps.

−	=== Rising damp ===	+	= Rising damp =

−	Rising damp in concrete and masonry is also a result of capillary action. When building materials such as most brick types, some stones, concrete blocks and plaster come into contact with moisture, the water adheres to the pores of the material’s capillaries. If ~~the diameter of the tube is sufficiently small, and~~ the adhesive force between the water molecules and the material is greater than the cohesive force existing between the water molecules themselves, the water rises up the tube through capillary action.	+	Rising damp in concrete and masonry is also the result of capillary action. When building materials such as most brick types, some stones, concrete blocks and plaster come into contact with moisture, the water adheres to the pores of the material’s capillaries. If the adhesive force between the water molecules and the material is greater than the cohesive force existing between the water molecules themselves, the water rises up the tube through capillary action.

−	Typically, damp can rise up to around 1m above ~~external ground level~~. It is usually prevented from doing so by the installation ~~near ground level~~ of a damp-proof course (DPC), typically a polymerised rubber material such as bitumen polymer. Installed as the brickwork goes up and bedded both sides with mortar, the bond between DPC, mortar and walling material creates a barrier to moisture rising through capillary action.	+	Typically, damp can rise up to around 1m above its source. It is usually prevented from doing so by the installation of a damp-proof course (DPC), typically a polymerised rubber material such as bitumen polymer. Installed as the brickwork goes up and bedded both sides with mortar, the bond between DPC, mortar and walling material creates a barrier to moisture rising through capillary action.

−	Capillary action is also seen in many plants and trees~~. It is also responsible for the draining of continuously produced tear fluid from the eye~~.	+	Capillary action is also seen in many plants and trees.

	Leonardo da Vinci is regarded as being the first person to observe and record capillary action.		Leonardo da Vinci is regarded as being the first person to observe and record capillary action.
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	* Building damp-free cavity walls.		* Building damp-free cavity walls.
	* Building science.		* Building science.
−	* Cavity tray.
−	* Cavity wall.
	* Chemical injected DPC.		* Chemical injected DPC.
	* Damp.		* Damp.
Line 31:		Line 31:
	* Defects in brickwork		* Defects in brickwork
	* Defects in stonework.		* Defects in stonework.
−	* Insulation.
	* Penetrating damp.		* Penetrating damp.
	* Rising damp.		* Rising damp.
	* Rising damp in walls - diagnosis and treatment (DG 245).		* Rising damp in walls - diagnosis and treatment (DG 245).
	* Vapour barrier.		* Vapour barrier.
−	* Weep hole.

	[[Category:Theory]] [[Category:Products_/_components]]		[[Category:Theory]] [[Category:Products_/_components]]

Editor at 18:13, 11 September 2019

2019-09-11T18:13:31Z

← Older revision		Revision as of 18:13, 11 September 2019
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		+	{\|
		+	\| [[File:Capillary action.jpg]]
		+	\|-
		+	\| Capillary action causes the water in the thinnest tube to rise to a higher level than in the other tubes
		+	\|}
		+
	Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within materials. It is sometimes referred to as capillary attraction, capillarity or wicking.		Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within materials. It is sometimes referred to as capillary attraction, capillarity or wicking.

Editor: Created page with "Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within ..."

2019-09-11T18:01:18Z

Created page with "Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within ..."

New page

Capillary action is a phenomenon associated with surface tension, whereby liquids can travel – horizontally or vertically (against the force of gravity) in small spaces within materials. It is sometimes referred to as capillary attraction, capillarity or wicking.

The movement is due to the surface tension that results when liquid or moisture is contained within very fine spaces or tubes (capillaries). Essentially, the liquid is attracted to the sides of the container; the smaller the space, the greater the attraction. Examples of capillarity include the action observed when a paper towel or blotting paper absorb water, and the way oil travels up a wick in oil lamps.

=== Rising damp ===

Rising damp in concrete and masonry is also a result of capillary action. When building materials such as most brick types, some stones, concrete blocks and plaster come into contact with moisture, the water adheres to the pores of the material’s capillaries. If the diameter of the tube is sufficiently small, and the adhesive force between the water molecules and the material is greater than the cohesive force existing between the water molecules themselves, the water rises up the tube through capillary action.

Typically, damp can rise up to around 1m above external ground level. It is usually prevented from doing so by the installation near ground level of a damp-proof course (DPC), typically a polymerised rubber material such as bitumen polymer. Installed as the brickwork goes up and bedded both sides with mortar, the bond between DPC, mortar and walling material creates a barrier to moisture rising through capillary action.

Capillary action is also seen in many plants and trees. It is also responsible for the draining of continuously produced tear fluid from the eye.

Leonardo da Vinci is regarded as being the first person to observe and record capillary action.

= Related articles on Designing Buildings Wiki =

* Blockwork.
* Building damp-free cavity walls.
* Building science.
* Cavity tray.
* Cavity wall.
* Chemical injected DPC.
* Damp.
* Damp proof membrane.
* Defects in brickwork
* Defects in stonework.
* Insulation.
* Penetrating damp.
* Rising damp.
* Rising damp in walls - diagnosis and treatment (DG 245).
* Vapour barrier.
* Weep hole.

[[Category:Theory]] [[Category:Products_/_components]]