Stratification of concrete - Revision history

Designing Buildings at 08:27, 19 July 2022

2022-07-19T08:27:43Z

← Older revision		Revision as of 08:27, 19 July 2022
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	To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.		To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.

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

	* Alkali-silica reaction (ASR).		* Alkali-silica reaction (ASR).
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	* Laitance.		* Laitance.
	* Precast concrete.		* Precast concrete.
		+	* Stratification.
	* Testing concrete.		* Testing concrete.
	* Types of concrete.		* Types of concrete.
		+	* Water stratification.

	[[Category:Articles_needing_more_work]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]]		[[Category:Articles_needing_more_work]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]]

Designing Buildings at 08:27, 23 December 2020

2020-12-23T08:27:39Z

← Older revision		Revision as of 08:27, 23 December 2020
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	To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.		To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Alkali-silica reaction (ASR).		* Alkali-silica reaction (ASR).
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	* Types of concrete.		* Types of concrete.

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

Editor at 14:51, 22 June 2018

2018-06-22T14:51:36Z

← Older revision		Revision as of 14:51, 22 June 2018
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Alkali-silica reaction (ASR).
	* Concrete.		* Concrete.
	* Concreting plant.		* Concreting plant.

Editor at 14:54, 2 May 2018

2018-05-02T14:54:39Z

← Older revision		Revision as of 14:54, 2 May 2018
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	* Concreting plant.		* Concreting plant.
	* How to clean concrete.		* How to clean concrete.
		+	* Laitance.
	* Precast concrete.		* Precast concrete.
	* Testing concrete.		* Testing concrete.

Designing Buildings at 14:47, 10 April 2018

2018-04-10T14:47:52Z

← Older revision		Revision as of 14:47, 10 April 2018
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−	~~Stratification is~~ the formation of horizontal 'layered' lines that can sometimes be found in cured cast-in-place concrete. It is the result of the ~~placing~~ of successive concrete batches that differ in appearance.	+	In relation to concrete, the term 'stratification' refers to the formation of horizontal, layered lines that can sometimes be found in cured cast-in-place concrete. This is the result of the pouring of successive concrete batches that may differ slightly in appearance.

−	Stratification generally only occurs in wetter concrete, rather than those that are of medium or drier consistencies. Concrete that is over-wet or over-vibrated can separate into horizontal layers, with the lighter material tending to form towards the top, ~~with~~ heavier material moving towards the bottom. This can have a detrimental effect on the durability of the concrete.	+	Stratification generally only occurs in wetter concrete, rather than those that are of medium or drier consistencies. Concrete that is over-wet or over-vibrated can separate into horizontal layers, with the lighter material tending to form towards the top, and heavier material moving towards the bottom. This can have a detrimental effect on the durability of the concrete.

	To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.		To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.

Editor at 12:05, 13 March 2018

2018-03-13T12:05:00Z

← Older revision		Revision as of 12:05, 13 March 2018
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−	~~The separation~~ of ~~over~~-~~wet or over~~-~~vibrated~~ concrete ~~into horizontal layers with increasingly lighter material toward the top~~. ~~Water, laitance, mortar, and coarse aggregate will tend to occupy successively lower positions in~~ that ~~order~~.	+	Stratification is the formation of horizontal 'layered' lines that can sometimes be found in cured cast-in-place concrete. It is the result of the placing of successive concrete batches that differ in appearance.

−	~~A layered structure~~ in concrete ~~resulting from placing~~ of ~~successive batches~~ that ~~differ in appearance~~.	+	Stratification generally only occurs in wetter concrete, rather than those that are of medium or drier consistencies. Concrete that is over-wet or over-vibrated can separate into horizontal layers, with the lighter material tending to form towards the top, with heavier material moving towards the bottom. This can have a detrimental effect on the durability of the concrete.

−	~~The occurrence in aggregate stockpiles of layers of differing grading or composition~~.	+	To remedy stratification, the concrete can be re-vibrated, as long as the concrete has not become stiff to the point where plasticity will not be restored after re-vibration.

−	~~A layered structure in a rock formation.~~	+	= Find out more =

−	~~The flow at the junction of two airstreams in layers that prevent the proper mixing of the two airstreams.~~	+	=== Related articles on Designing Buildings Wiki ===

−	~~Effects of overvibration are rarely encountered in concrete of medium and the drier consistencies, in the wetter consistencies horizontal stratification may result with detriment~~ to ~~durability~~. ~~Tests show that aslong as the~~ concrete ~~has not become so stiff that re-vibration will not restore plasticity, revibration bene-fits, does not harm~~ concrete.	+	* Concrete.
		+	* Concreting plant.
		+	* How to clean concrete.
		+	* Precast concrete.
		+	* Testing concrete.
		+	* Types of concrete.

−	[[Category:Articles_needing_more_work]]	+	[[Category:Articles_needing_more_work]] [[Category:Construction_techniques]]

Editor: moved Stratification to Stratification of concrete

2018-03-13T11:48:09Z

moved Stratification to Stratification of concrete

← Older revision

Revision as of 11:48, 13 March 2018

Editor: Created page with "The separation of over-wet or over-vibrated concrete into horizontal layers with increasingly lighter material toward the top. Water, laitance, mortar, and coarse aggregate will ..."

2018-03-12T17:13:26Z

Created page with "The separation of over-wet or over-vibrated concrete into horizontal layers with increasingly lighter material toward the top. Water, laitance, mortar, and coarse aggregate will ..."

New page

The separation of over-wet or over-vibrated concrete into horizontal layers with increasingly lighter material toward the top. Water, laitance, mortar, and coarse aggregate will tend to occupy successively lower positions in that order.

A layered structure in concrete resulting from placing of successive batches that differ in appearance.

The occurrence in aggregate stockpiles of layers of differing grading or composition.

A layered structure in a rock formation.

The flow at the junction of two airstreams in layers that prevent the proper mixing of the two airstreams.

Effects of overvibration are rarely encountered in concrete of medium and the drier consistencies, in the wetter consistencies horizontal stratification may result with detriment to durability. Tests show that aslong as the concrete has not become so stiff that re-vibration will not restore plasticity, revibration bene-fits, does not harm concrete.

[[Category:Articles_needing_more_work]]