Update on PTI Grouting Specifications
Update on PTI Grouting Specifications
Update on PTI Grouting Specifications
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<strong>PTI</strong> <strong>Grouting</strong> Specificati<strong>on</strong>Storage of Materials Store per Manufacturer’s recommendati<strong>on</strong>sFlushing Removed all references to flushing – Do Not FlushGrout Injecti<strong>on</strong> Equipment Use of Recirculati<strong>on</strong> “T” to c<strong>on</strong>trol pressuresC<strong>on</strong>structi<strong>on</strong> Provisi<strong>on</strong>s<strong>Grouting</strong> Operati<strong>on</strong>s‣Pumping rate slow enough to avoid air entrapment andsegregati<strong>on</strong>; 5 – 15 m/min‣Removed holding pressure for <strong>on</strong>e minute‣Do not elevate pressureo Normal 10 – 50 psi;o Maximum: 75 psi (thixotropic)o Maximum: 1 MPa (145 psi) (n<strong>on</strong>-thixotropic)
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