Pressure Grout Pumps by Harjai And Company

The HARJAI Standard Grout Pump is a simple but efficient low cost equipment ideally suited for grouting cable ducts in small and medium sized pre stressed concrete members. It is a hand oper..

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Product Description

The HARJAI Standard Grout Pump is a simple but efficient low cost equipment ideally suited for grouting cable ducts in small and medium sized pre stressed concrete members. It is a hand operated stirrup pump of the diaphragm type in which grout is drawn up the suction pipe past a simple non return ball valve, and on the pressure stroke is driven forward into the feed hose through 'a similar non-return valve. Site trials of grouting of ducts in normal beams have shown that the HARJAI Standard Grout Pump can supply 130 liters of neat cement grout per hour of pumping time, which means it is a pump having a fairly large capacity. The maximum working pressure is 3 Kg/cm2 (42 psi).

 

GROUTING PRACTICE : The purpose of grouting post tensioned tendons in pre stressed concrete members is to provide permanent protection to the post tensioning steel and to develop bond between the pre stressing steel and the surrounding concrete. This also applies to grouting of soil and rock anchors. However, in the case of soil and rock anchors, since the hardened grout sustains the full pre stressing force, more detailed consideration has to be given to grout strength and injection procedures.

Product Specification

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