Thor, or should that be Zeus?

[Chaz]

Just need to drill some holes into the bearing holder, quick test fit. Have bought some reference surfaces (surface plate for the table) and also a fairly large box (engineering type, flat within 5 thou) that Ill use to cast the DWH against. I was going to try something cheaper but its risky and this will be better.

[Chaz]

Quick update, been slow as I have been ill.


Getting ready to place the putty for levelling.

[Clive S]

Chaz

Would you mind telling me the mix that you used ie cement, stone, fines and the water content byr weight or volume

[Chaz]

Chaz

Would you mind telling me the mix that you used ie cement, stone, fines and the water content byr weight or volume

1/3 rd equal parts of Cement (52.5R), Sand (Sharp Sand, 0-2mm) and Basalt Stone (6-10mm). 20% Water volume based on Cement used (so in this case, 5 litres per 1 bag of 25kg each above).

[Clive S]

1/3 rd equal parts of Cement (52.5R), Sand (Sharp Sand, 0-2mm) and Basalt Stone (6-10mm). 20% Water volume based on Cement used (so in this case, 5 litres per 1 bag of 25kg each above).

Thanks for the info are you using any SP (superplasticising) like modified polycarboxylate

[Chaz]

Thanks for the info are you using any SP (superplasticising) like modified polycarboxylate

Yep, otherwise it wont even mix properly.

Before SP:-

https://www.youtube.com/watch?v=2IeEhFW44F8

After SP:-

https://www.youtube.com/watch?v=4KfWcawy7b4

I used too much SP but it worked well. I dont know the make I used, got it from my 'pimp' in Germany but its higher end stuff (at least, that is what he said).

[Clive S]

Thanks Yes I have seen them. I am a bit surprised about the amount of cement in the mix it seems massive to me and what I have researched. You can the get SP in the UK though.

Was you're SP powder or liquid? and what quantity to the cement?

Looking forward to see the next bit done.

[Tom J]

1/3 rd equal parts of Cement (52.5R), Sand (Sharp Sand, 0-2mm) and Basalt Stone (6-10mm). 20% Water volume based on Cement used (so in this case, 5 litres per 1 bag of 25kg each above).

...seems to be a lot of water.
In my work place we add circa 30 litres of water to 750kg of mix (all depends how wet is the sand).
This gives nice mix to form roof tiles. 10% water too much and mix is too wet and have to be dump - happens daily.
My point is to get correct amount of water - mix it well and we shall get strong cement.

[Chaz]

...seems to be a lot of water.
In my work place we add circa 30 litres of water to 750kg of mix (all depends how wet is the sand).
This gives nice mix to form roof tiles. 10% water too much and mix is too wet and have to be dump - happens daily.
My point is to get correct amount of water - mix it well and we shall get strong cement.

Really? I was under the impression this was a fairly dry mix. Without the plastisizer it wont even bond.

[Tom J]

Really? I was under the impression this was a fairly dry mix. Without the plastisizer it wont even bond.

Should add that the mix goes through bed/slipper which is kind of mold and is compacted by packshaft with fingers - layer of concrete is 12mm thick and travel 1m/s speed.
In your case vibrating plate is a must. Curing process is complex too (4 stages with extra water), retarder is used to slow curing process.
Since I work there, I use min amount of water (just for mix to be not brittle) - for diy concrete job