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neb

neb

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#302982 8-Jan-2023 20:30
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The Casa has a flight of paved steps running down into the garden, railroad sleeper surrounds filled with brick paving and a gap at the back where it wasn't worth slicing up lots of bricks to fill a narrow channel. There's a bit of hardfill packed in there, but over time a layer of topsoil has accumulated and is getting deeper and more crowded with junk that self-seeds in there. This is it after yet another cleanout:

 

 

 

 

I don't want to just line it with a strip of ugly concrete so was thinking of getting a bag of builders mix, dampening it a bit, and mixing in a half-bag of leftover grout I've had sitting around. The idea isn't to make concrete but more a fortified hardfill that doesn't scatter all over the place when leaves on top of it get raked off.

 

 

It seems like a no-brainer, but I'm sure if I go to it right now someone will come along in the future and say "well, that looks pretty good, but did you think about using ...?", so I thought I'd run it past the peanut gallery here first.

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mdf

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  #3018676 8-Jan-2023 21:20
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Seems like a reasonable plan, though I'd be inclined to use top course rather than builders mix. Builders mix has a lot of sand. I'm not sure how much hold the grout will provide and the sand may wash away. Top course compacts really nicely into hard fill. I'd guess a plate compactor won't work for you, but a ram will get it quite compact (I have previously added handles to a fencepost for this - works reasonably well).

 

Another possible option. A friend has just made a new patio with big pavers and put no mow in the joins. I didn't think this would work but it actually looks fantastic.


 
 
 

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neb

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  #3018681 8-Jan-2023 21:30
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Hmm, interesting point... I'd actually gone specifically for the builders mix because of the high sand content since I wasn't sure how well grout (or cement, I just happened to have grout lying around) would work on more coarse aggregate. I've done this before, mixing in a bit of cement to fortify builders mix, but since it was a spur-of-the-moment invention wondered if there was a better way.

 

 

The no-mow stuff sounds great but since this place oscillates between porridge-like mush and concrete-like hardpan it's managed to kill most things like that we've tried, even allegedly invasive stuff like blue star creeper eventually either turns brown and rots or turns brown and dries out depending on the season.

OllieF
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  #3018848 9-Jan-2023 07:56
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Why not condense it, and put some large riverstones there.




MikeAqua
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  #3018860 9-Jan-2023 08:38
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It almost looks like you'd get bricks in there if you turned them on their edges.  Just thought I'd mention it as sometime it's easy to overlook the obvious when you're close to a problem.

 

If not, and it was my stairs, I'd hire the appropriate tool and cut some bricks.





Mike


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  #3018862 9-Jan-2023 08:43
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Even if the sleepers were there first at the time of bricking another row could have been slotted in partially covered by the sleeper. No extra brick cutting would have been needed.

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  #3018913 9-Jan-2023 11:10
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Bung: Even if the sleepers were there first at the time of bricking another row could have been slotted in partially covered by the sleeper. No extra brick cutting would have been needed.


That's the one with the biggest gap and easiest to show the issue in a photo, some gaps are only a few cm.

River stones: Interesting idea, but two downsides I can think of are that they won't solidly fill the space leading to the same soil buildup problem, and they'll draw the eye to the existence of the gap whereas the rather neutral hardfill will blend in.

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  #3018932 9-Jan-2023 12:03
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For anyone else looking at doing this and getting a bit more rigorous than "throw a handfull of cement into the mix", the technical term for it is cement stabilised aggregate, most of the info around it is for stabilising soft ground for road works and building foundations. The cement ratio is given as 1-5%, vs. 10-15% for concrete.



JayADee
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  #3018977 9-Jan-2023 13:06
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Concrete or cement with a handful of colourant to match the bricks?


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