View Full Version : Dry-stack block wall- core filled
24th Nov 2008, 12:06 PM
looks like I will be useing one of these walls in my reno as party wall- both sides (90m2) , have done some research can only find the Connex system from Boral which looks fine, has any one done any of this before?, I have seen them becoming more and more popular over the last couple of years, looks quite simple to assemble keep level and plum.
seems to me the tricky part might be when it comes time to pump the grout in, never used pump before :oo: presume you don`t need to vibrate?as would be runny enough to fill all cavity. doesn`t say anything in tech info?
anyway any comments advice would be great
4th Dec 2008, 09:32 AM
I am researching mortarless building systems for a small blade wall and have found C&M do a similar product to Boral.
The only details i can find regarding core filling from C&M is to use a small nozzle on the end of a pump hose, use a rod to push the grout down/around cavities and no need to vibrate. I had thought of mixing grout myself however C&M recommend against it.
Concrete cost and pump hire are exxy so I am going to explore the possibility of mixing the grout myself (against C&M recommendations :rolleyes: ), I figure how hard can it be, just need the exact mixture specs, and then pour the grout in using a bucket.
Any comments/advice ?
4th Dec 2008, 06:21 PM
I have seen a bloke dry stack Boral Besser concrete blocks. The critical point is getting the blocks smack on level at the first course with a mortar bed.
He had the standard starter bars in the footing then stacked the blocks over the top.
Once he had stacked the blocks he mixed 10mm concrete in a mixer and filled the cores.
With the starter bars you could build a metre then fill, stack another metre, bit of water to moisten the core fill concrete and fill again. A bit of water in the cores when filling prior lubricates the blocks to take the core fill also.
7th Dec 2008, 09:01 AM
Hanson make one called HI-Stack also.
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