Deleted
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Post by Deleted on Apr 10, 2022 18:37:47 GMT 1
....like I did, a squirt of washing up liquid in your concrete mix makes all the difference. Less water, easier pour, better finish. I know you know and he knows a better way. I'm just sharing what made my life a bit easier today. |
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ibis
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Post by ibis on Apr 10, 2022 20:04:41 GMT 1
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Post by cernunnos on Apr 10, 2022 20:19:19 GMT 1
But if you are above 50, then who actually cares if your concrete will last another 30 years?
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Deleted
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Post by Deleted on Apr 10, 2022 20:50:08 GMT 1
But if you are above 50, then who actually cares if your concrete will last another 30 years? Exactly it's half life reduced from a 200 years to 100. I think the post was more about the peurile insult. |
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Post by pcpa on Apr 10, 2022 21:35:02 GMT 1
I've seen pointing that could be picked away with bare fingers 3 years after someone used washing up liquid as a mortar plasticiser, that job was saved by repointing using FEB plasticiser, the short retaining wall for a block paved step had to be completely rebuilt as there was very little strength in the bond.
As concrete is usually used for its strength I don't usually add anything aside from reinforcing rods, fibre etc and only use a plasticiser when I am using smooth faced coffrage and want a smooth void free finish but I think vibration does the better job, I would not add washing up liquid to structural concrete, for render or mortar a tiny amount if I had no plasticiser.
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Deleted
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Post by Deleted on Apr 10, 2022 22:05:20 GMT 1
I've seen pointing that could be picked away with bare fingers 3 years after someone used washing up liquid as a mortar plasticiser, that job was saved by repointing using FEB plasticiser, the short retaining wall for a block paved step had to be completely rebuilt as there was very little strength in the bond.
As concrete is usually used for its strength I don't usually add anything aside from reinforcing rods, fibre etc and only use a plasticiser when I am using smooth faced coffrage and want a smooth void free finish but I think vibration does the better job, I would not add washing up liquid to structural concrete, for render or mortar a tiny amount if I had no plasticiser.
The ass that did the alleged pointing either used too much lime or the mix was too dry or he did not wet the joints first or it was too hot a day. A little bit of washing up liquid would not have caused pointing to fall out after three years unless he did it and it was minus 5 that night it was completed. |
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Post by pcpa on Apr 10, 2022 22:29:10 GMT 1
And yet"the ass" has a very high opinion of your abilities.
How much is "too much lime" when none is used?
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Deleted
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Post by Deleted on Apr 10, 2022 22:39:51 GMT 1
Are you saying your the ass who cannot use render?
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Post by Deleted on Apr 10, 2022 23:31:24 GMT 1
Concrete. I said flippin concrete. Mortar is a different matter. Ksake. What's wrong with people? I used about as much fairy as I'd use on a four place setting, in a batch of 17½ kgs cement to 5 buckets of melange beton. Concrete is way over designed to account for the less than laboratory standards of your average building site. Mine will still be there when the youngest of us is pushing up daisies.
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Post by Seaboots on Apr 11, 2022 5:53:02 GMT 1
My late father in law was a builder though plasterer by trade. He always had a jimmy in the concrete or render mix in winter to offset any problems due to freezing conditions etc.
No idea if this was true, maybe he was taking the piss ?
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Nifty
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Post by Nifty on Apr 11, 2022 8:18:24 GMT 1
It’s Uri Gagarin’s anniversary tomorrow
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Post by manonthemoon2 on Apr 11, 2022 8:35:15 GMT 1
Slightly off topic, but maybe someone knows the answer.
How do you stop concrete, when dry, from a powder residue that treads everywhere (especially into the house by dogs)?
Sorry to hijack.
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Post by annabellespapa on Apr 11, 2022 9:09:27 GMT 1
My late father in law was a builder though plasterer by trade. He always had a jimmy in the concrete or render mix in winter to offset any problems due to freezing conditions etc. No idea if this was true, maybe he was taking the piss ? I have heard that with plaster, it gives you a bit more working time but don't know why. We had a chimney fire in our 1930's built UK house, the first we knew of the fire was the smell of what was like cat pee in the plaster of the bathroom directly above the fireplace. |
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Deleted
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Post by Deleted on Apr 11, 2022 9:27:43 GMT 1
Slightly off topic, but maybe someone knows the answer. How do you stop concrete, when dry, from a powder residue that treads everywhere (especially into the house by dogs)? Sorry to hijack. The powder is the result of too much water in the mix. Seal the concrete. With what? IDK. Hopefully a decent suggestion will appear here. |
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Post by houpla on Apr 11, 2022 9:44:51 GMT 1
If it's available here, the equivalent of Unibond? I hope there is an equivalent....I need to seal some awful cracked, stained crépi before painting.
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