Concrete leveling: Difference between revisions
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Accounts of raising large cement 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 cement 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. | ||
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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. | ||
Modern Concrete Leveling techniques utilize smaller holes to avoid weakening the concrete slab, or raising the blocks too quickly. A highly dense crushed limestone is sometimes mixed with moderate amounts of cement, and can be pumped slowly and safely through hoses that are connected directly to the pumping truck, with little or no | Modern Concrete Leveling techniques utilize smaller holes to avoid weakening the concrete slab, or raising the blocks too quickly. A highly dense crushed limestone is sometimes mixed with moderate amounts of cement, and can be pumped slowly and safely through hoses that are connected directly to the pumping truck, with little or no destruction of landscaping or surrounding structures. | ||
[[Category:Concrete]] | [[Category:Concrete]] | ||
[[Category:Structural engineering]] | [[Category:Structural engineering]] | ||
Revision as of 22:35, 14 April 2007
Accounts of raising large cement 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.
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.
Modern Concrete Leveling techniques utilize smaller holes to avoid weakening the concrete slab, or raising the blocks too quickly. A highly dense crushed limestone is sometimes mixed with moderate amounts of cement, and can be pumped slowly and safely through hoses that are connected directly to the pumping truck, with little or no destruction of landscaping or surrounding structures.