Grouted sleeve

Grout sleeves were placed (vertically) on 2-ft centers throughout the mat-reinforcing steel, and the concrete was poured around them. After the mat had cured, grout pipes were driven through the sleeves to a depth of... 

Experimental results confirmed that both the yielding and frictional elements are able to provide the anchorage with ductility and prevent damage to occur in either the grouted sleeve or the masoiuy, while traditional anchors, which were tested for comparison purposes, display a... 

Figure 12.8 Different repair conditions of the grouted sleeve and the corresponding predicted highest maximum principal strain in the pipe.

L.4.6 All water and foreign materials shall be removed from the anchor bolt sleeves before grouting. 

L.4.7 After the baseplate is installed, the anchor bolt sleeve holes shonld be filled with a nonbonding material or the chosen gront, depending on the user s preference. This shonld be done before the main grouting of the baseplate. 

SLAKING Deterioration of rock on exposure to air or water. SLEEVED GROUT PIPE Same as TUBE A MANCHETTE. 

The purpose of the sleeve-grout was to prevent upward travel of grout along the sleeve-pipe during subsequent injections. 

In grouting Method S, tested in Subarea 5a, chemical grout was injected once at every sleeve level. The grouting pressure was kept below 1 Ib/in per foot of soil above the sleeve being injected. This pressure criterion is usually low for sleeve-pipe grouting. Method S was tested on only two holes, mainly for the purpose of demonstrating that the low-pressure criterion is incompatible with sleeve-pipe grouting. 

Sleeve-Pipe (Method S2). This grouting method, tested in Subareas 3, 4, 5, 10 and 11, involved injection of a predetermined volume of... 

The common practice of not exceeding 1 psi pressure per foot of overburden is not effective in sleeve-pipe grouting, because a significant portion of the pressure head may be lost in keeping the rubber sleeve expanded against the sleeve grout. Further, if the cracks in the sleeve grout... 

Piles are connected to the structure by grouting the annular space between the pile and its sleeve. A pile in its final position is shown in Figure 10.26. To increase the strength of the bond between the pile and the sleeve, shear connectors are placed over the length of the pile expected to be in the sleeve at final penetration. Packers may be placed at the bottom of the sleeves to prevent loss of grout. 

Lateral loading on the jacket platform can produce high bending stresses in the piles as they emerge from the sleeve. To handle these stresses the wall thickness over a length of pile expected to be above and below the grout packer is increased to resist these stresses. This length is commonly called the heavy wall section. The installation of such piles must be carefully planned, since any delays may be costly. 

Repairing Termite-Damaged Wood. Wood that has been weakened or damaged by termite attack may be repaired without removing the wooden member from the structure. The procedure is similar to pressure-grouting cracks in concrete. For termite-damaged wood, a form sleeve must be built around the damaged wooden member then, a low-viscosity epoxy-resin... 

When using partial sleeves, shear should not be transmitted via anchor bearing unless the sleeves are filled with grout to assure a proper bearing surface at the top-of-concrete elevation. See 3.3.3 through 3.3.5 for a detailed discussion of the design considerations associated with the transfer of shear from the attachment to the foundation. 

A sleeve may be used to provide an unbonded length for tensioning (Figure 4.5). Depending on the embedment depth and diameter of the anchor, various techniques may be used to facilitate installation of the anchor using the various grout types. 

Other recommendations for design of these repairs (Sum and Leong, 2014) include specifying a thin layer of grout to efficiendy transfer the load from defect to sleeve and a sufficiendy stiff composite sleeve to provide the required support to reduce strains in the corroded section of the pipe. 

Sum, W.S., Leong, K.H., 2014. Numerical study of annular flaws/defects affecting the integrity of grouted composite sleeve repairs on pipehnes. Journal of Reinforced Plastics and Composites 33 (6), 556-565. 

---