How to pump sand behind a retaining wall

[terravista]

Oh, now I get it and the answers so far make more sense.

I thought the heading said SANDRA not sand. my mistake.

Now that's cute, calling your inflatable doll Sandra, and thanks for the offer but I have to pass. The last inflatable thing I had went down on me. No pumping required.
cheers

[terravista]

Thanks people. I talked to a conveyor place and they were dearer than concrete pumping. I got in touch with a blowing company and it's booked in using soil with liberal dry cement added. After hosing it well it should do the job.
cheers
Ian

[terravista]

I'm curious why you want to pump concrete behind the wall as that isn't going to solve your pressure problem against the wall.

Thanks. We don't want concrete, but had thoughts that was all we may be able to pump in.
Between the pool fence built on top of the retaining wall and the boundary fence to the rear neighbours is only 500mm.
The land is in the old Brissie suburbs and only 10 metre wide. By the time a house goes up there is no room to get any plant to the rear that could reach far enough to place fill.
cheers