Concrete leveling - Revision history

Idea at 23:14, 29 September 2026

2026-09-29T23:14:22Z

← Older revision		Revision as of 23:14, 29 September 2026
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	Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.		Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.

	Sidewalks, patios and garage floors are most often made of [[concrete]]. When the concrete is a few inches thick and poured on insufficient foundation and/or without steel reinforcement it may crack and subside. Sometime water run off from rain or flood can wash away dirt upon which the concrete slab is resting leading to cracking and subsiding. When that happens the concrete can be demolished and removed and then re-built, however a method called [[mudjacking]] or slabjacking can both raise the old cracked slab back to its original position and create a new [[Foundation (engineering)\|foundation]] of [[cement]] [[Mortar (masonry)\|mortar]] or [[sand mix]] by injecting the mortar under the slab through a hole, under pressure. The [[viscosity]] of the mortar will keep it from flowing back through the hole until it sets. ~~For a diagram see [http://www.raise-rite.com/concrete_raising/how.html]~~		Sidewalks, patios and garage floors are most often made of [[concrete]]. When the concrete is a few inches thick and poured on insufficient foundation and/or without steel reinforcement it may crack and subside. Sometime water run off from rain or flood can wash away dirt upon which the concrete slab is resting leading to cracking and subsiding. When that happens the concrete can be demolished and removed and then re-built, however a method called [[mudjacking]] or slabjacking can both raise the old cracked slab back to its original position and create a new [[Foundation (engineering)\|foundation]] of [[cement]] [[Mortar (masonry)\|mortar]] or [[sand mix]] by injecting the mortar under the slab through a hole, under pressure. The [[viscosity]] of the mortar will keep it from flowing back through the hole until it sets.

	Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].		Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].

Idea at 23:14, 29 September 2026

2026-09-29T23:14:06Z

← Older revision		Revision as of 23:14, 29 September 2026
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	== External links ==		== External links ==
	* [http://www.uretekicr.com]		The newest method (developed by URETEK) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.
	The newest method (developed by ~~[http://www.eaglelifting.com/get_resolution.php~~ URETEK]) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.

	[[Category:Concrete]]		[[Category:Concrete]]
	{{ntnes}}		{{ntnes}}

wikademia>Wikademia at 20:09, 11 April 2009

2009-04-11T20:09:49Z

← Older revision		Revision as of 20:09, 11 April 2009
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	[[Category:Concrete]]		[[Category:Concrete]]
			{{ntnes}}

wikademia>Wikademia at 21:26, 6 April 2009

2009-04-06T21:26:10Z

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	~~{{Orphan\|date=September 2008}}~~
	~~{{context\|date=September 2007}}~~
	~~{{sections\|date=February 2008}}~~
	~~{{Unreferenced\|date=April 2007}}~~

	Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.		Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.

wikademia>Wikademia: 39 revisions

2009-04-06T19:26:33Z

39 revisions

← Older revision	Revision as of 19:26, 6 April 2009
(No difference)

wikademia>RussBot: Robot-assisted fix links to disambiguation page Foundation

2009-01-08T13:32:36Z

Robot-assisted fix links to disambiguation page Foundation

← Older revision		Revision as of 13:32, 8 January 2009
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	Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.		Concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private homes.

	Sidewalks, patios and garage floors are most often made of [[concrete]]. When the concrete is a few inches thick and poured on insufficient foundation and/or without steel reinforcement it may crack and subside. Sometime water run off from rain or flood can wash away dirt upon which the concrete slab is resting leading to cracking and subsiding. When that happens the concrete can be demolished and removed and then re-built, however a method called [[mudjacking]] or slabjacking can both raise the old cracked slab back to its original position and create a new [[foundation]] of [[cement]] [[Mortar (masonry)\|mortar]] or [[sand mix]] by injecting the mortar under the slab through a hole, under pressure. The [[viscosity]] of the mortar will keep it from flowing back through the hole until it sets. For a diagram see [http://www.raise-rite.com/concrete_raising/how.html]		Sidewalks, patios and garage floors are most often made of [[concrete]]. When the concrete is a few inches thick and poured on insufficient foundation and/or without steel reinforcement it may crack and subside. Sometime water run off from rain or flood can wash away dirt upon which the concrete slab is resting leading to cracking and subsiding. When that happens the concrete can be demolished and removed and then re-built, however a method called [[mudjacking]] or slabjacking can both raise the old cracked slab back to its original position and create a new [[Foundation (engineering)\|foundation]] of [[cement]] [[Mortar (masonry)\|mortar]] or [[sand mix]] by injecting the mortar under the slab through a hole, under pressure. The [[viscosity]] of the mortar will keep it from flowing back through the hole until it sets. For a diagram see [http://www.raise-rite.com/concrete_raising/how.html]

	Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].		Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].

wikademia>Lightbot: Units/dates/other

2008-12-30T17:42:40Z

Units/dates/other

← Older revision		Revision as of 17:42, 30 December 2008
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	Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].		Accounts of raising large concrete slabs through the use of [[hydraulic]] pressure go back almost a century. Mudjacking or slabjacking has been in common use for about 50 years. HMI, or Hydraulic Mudjacking equipment was the first equipment used for residential concrete raising. Refinement of the process to its current state occurred about 20 years ago when Grover Miller an [[inventor]] from [[Peninsula, Ohio]], began working on A-1’s patented Self-contained pumping trucks, which utilize a highly-dense crushed [[limestone material]], sometimes mixed with [[Portland Cement]].

	Generally in Mudjacking or Slabjacking a portable [[pump]] is carried to the location of the block to be raised. A hole of up to 3 [[inches]] in [[diameter]] is drilled into the block. Varying combinations of [[soil]], [[sand]], cement, or other materials, are mixed and then injected under the sunken concrete block, causing it to rise.		Generally in Mudjacking or Slabjacking a portable [[pump]] is carried to the location of the block to be raised. A hole of up to 3 inches in [[diameter]] is drilled into the block. Varying combinations of [[soil]], [[sand]], cement, or other materials, are mixed and then injected under the sunken concrete block, causing it to rise.

	Problems associated with Mudjacking involve: containment of the mess caused by excess [[mud]] or [[cementeous material]] in the area to be raised; drilling of large holes that can weaken the block, and allow material to flow too quickly causing cracking of the slabs. HMI is not conducive to filling large void areas.		Problems associated with Mudjacking involve: containment of the mess caused by excess [[mud]] or [[cementeous material]] in the area to be raised; drilling of large holes that can weaken the block, and allow material to flow too quickly causing cracking of the slabs. HMI is not conducive to filling large void areas.

wikademia>Anthony Appleyard: /* External links */ direct ext link

2008-11-10T19:13:20Z

External links: direct ext link

← Older revision		Revision as of 19:13, 10 November 2008
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	== External links ==		== External links ==
	* [http://www.uretekicr.com]		* [http://www.uretekicr.com]
	The newest method (developed by [[URETEK]]) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.		The newest method (developed by [http://www.eaglelifting.com/get_resolution.php URETEK]) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.

	[[Category:Concrete]]		[[Category:Concrete]]

wikademia>Mtt0375 at 16:47, 10 November 2008

2008-11-10T16:47:32Z

← Older revision		Revision as of 16:47, 10 November 2008
Line 18:		Line 18:
	== External links ==		== External links ==
	* [http://www.uretekicr.com]		* [http://www.uretekicr.com]
	The newest method (developed by URETEK) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.		The newest method (developed by [[URETEK]]) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.

	[[Category:Concrete]]		[[Category:Concrete]]

wikademia>SmackBot: Embolden title or general fixes

2008-10-02T22:09:02Z

Embolden title or general fixes

← Older revision		Revision as of 22:09, 2 October 2008
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	== External links ==		== External links ==
	[http://www.uretekicr.com]		* [http://www.uretekicr.com]
	The newest method (developed by URETEK) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.		The newest method (developed by URETEK) in concrete leveling utilizes two part closed cell polymer expanding foam which is injected through a hole less than one inch in diameter, typically 5/8". Although the material injected at a higher psi rate than traditional cementious grouts the pressure is not what causes the lifting. The expansion of the injected material below the slab surface performs the actual lifting action. Material injected below a slab to be lifted will first find weak soils, expanding into them in such a manner as to consolidate and cause sub-soils to become more dense and fill any voids below the slab. One inherent property of expanding foams is that they will follow the path of least resistance, expanding in all directions. Another inherent property includes reaching a hydro-insensitive or hydrophobic state when cured with 100% cure times as little as 30 minutes. Closed cell polymer foams offer benefits which go beyond the goal of leveling hard surfaces. They will not retain moisture, which in northern climates can cause frost heaving. They are not subject to erosion once in place. Their fast cure time allows for immediate use when application is complete. Their light weight, 3 to 8 lbs. per cubic ft. vs. 100 to 120 lbs. per cubic ft. for cementious grout will not cause further settlement. Foams will retain their cured shape and volume indefinitely reducing the possibility of new voids forming below grade to nearly zero unless acted upon by some outside cause. Some closed cell polymer foams have baseline lifting capabilities of 6,000 lbs per sq. ft. and leveling procedures have been performed in which loads as high as 125 tons have been lifted and stabilized in a surface area of less than 900 sq. ft.

	[[Category:Concrete]]		[[Category:Concrete]]