{"id":145,"date":"2015-02-03T16:54:41","date_gmt":"2015-02-04T00:54:41","guid":{"rendered":"http:\/\/research.engineering.ucdavis.edu\/gpa\/?page_id=145"},"modified":"2015-02-17T15:22:10","modified_gmt":"2015-02-17T23:22:10","slug":"compaction-grouting-general","status":"publish","type":"page","link":"https:\/\/research.engineering.ucdavis.edu\/gpa\/ground-improvement\/compaction-grouting-general\/","title":{"rendered":"Compaction Grouting-General"},"content":{"rendered":"
\"\"<\/a>

This series of schematics illustrates the general procedures in the bottom-up technique of compaction grouting. The first step, shown here, is to install grout pipes using drilling or driving techniques.\u00a0<\/p><\/div>\n

\"\"<\/a>

The mortar-like grout, injected through the pipes, displaces the surrounding soil. The grout pipe is then lifted some distance (0.3 to 1.5 m), and the injection process is repeated.<\/p><\/div>\n

\"\"<\/a>

Injection in “stages” continues until the target layer has been treated. Grouting can stiffen and strengthen the soil layer by increasing its density, increasing the lateral stresses, and acting as a reinforcement. Grouting may also be used to produce controlled heaving of the ground surface to re-level a structure that has been damaged by differential settlements.<\/p><\/div>\n

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\"Schematic-3steps\"<\/a>

All three steps together.<\/p><\/div>\n

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\"Grout<\/a>

These compaction grout bulbs were excavated as part of a demonstration project by Denver Grouting (now with Hayward Baker). These four grout bulbs were from the same grout mix, and are all relatively regular in shape.<\/p><\/div>\n

\"Grout<\/a>

These four grout bulbs were from a more “mobile” (more fluid like) grout mix which allowed it to form winged-shaped bulbs.<\/p><\/div>\n

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\"Six<\/a>

This schematic shows six different possible applications for compaction grouting.<\/p><\/div>\n

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