home brew mix

[strobes]

Local HomeDepot has this mortar.
TXI 70 lb. Type N Masonry Portland-Lime Blend Cement-9991 at The Home Depot
MSDS : http://www.homedepot.com/catalog/pdf...4d0f879a03.pdf

Can I use it as a base? If I'm reading right it is about 1-1 Lime, Portland.
So adding 3 parts sand, 1 part clay will make reasonable home brew mix?

[strobes]

Re: home brew mix

Also Lows has this QUIKRETE 50-lb Hydrated Lime Type S. Is it any good for our hobby?
Shop QUIKRETE 50-lb Hydrated Lime at Lowes.com

[Les]

Re: home brew mix

Local HomeDepot has this mortar.
TXI 70 lb. Type N Masonry Portland-Lime Blend Cement-9991 at The Home Depot
MSDS : http://www.homedepot.com/catalog/pdf...4d0f879a03.pdf

Can I use it as a base? If I'm reading right it is about 1-1 Lime, Portland.
So adding 3 parts sand, 1 part clay will make reasonable home brew mix?

Should work, the roll your own is 3.1.1.1

Sand, Portland, Lime, fireclay

[strobes]

Re: home brew mix

Les, Is this this lime any good?
QUIKRETE 50-lb Hydrated Lime Type S.
link to the product: Shop QUIKRETE 50-lb Hydrated Lime at Lowes.com
buying Lime, Portland separately 2.5 times more cost effective.

[Les]

Re: home brew mix

Should work just fine.

[Tscarborough]

Re: home brew mix

3-1-1-1 will work fine but 5/6-1-1-1 will work better with less cracking.

[Blacklab]

Re: home brew mix

Good to know guys. Thank you. Starting my build very soon =s

[Keith Oertli]

Re: home brew mix

3-1-1-1 will work fine but 5/6-1-1-1 will work better with less cracking.

Are you saying a mixture 5/6-1-1-1 where 5/6=.833333?

or, 5-1-1-1
or
6-1-1-1

And, can you explain why this misture option seems to work better than
3-1-1-1?

Thanks

[Tscarborough]

Re: home brew mix

The technical specification is 2-1/4 to three parts sand, by volume, of the cementious materials. 2 of the ingredients, portland and lime, are considered to be cementious for the purposes of the mortar formula.

So 5 to 6 parts aggregate in this formula. The aggregate size, blend, and total amount will vary depending upon local conditions and use.

For refractory cement use the best design is always the smallest joint possible. In a fireplace application the joint will be 1/8 to 1/4", and will have a very fine aggregate and tend to be "rich", i.e.less aggregate. For ovens the joints are much bigger and the aggregate needs to reflect that and should be a more or less evenly graded sand from dust to just under 1/4".

The richer the mortar, the more shrinkage cracking will happen, that is why for this specific application, more aggregate is better.

[Keith Oertli]

Re: home brew mix

The technical specification is 2-1/4 to three parts sand, by volume, of the cementious materials. 2 of the ingredients, portland and lime, are considered to be cementious for the purposes of the mortar formula.

So 5 to 6 parts aggregate in this formula. The aggregate size, blend, and total amount will vary depending upon local conditions and use.

For refractory cement use the best design is always the smallest joint possible. In a fireplace application the joint will be 1/8 to 1/4", and will have a very fine aggregate and tend to be "rich", i.e.less aggregate. For ovens the joints are much bigger and the aggregate needs to reflect that and should be a more or less evenly graded sand from dust to just under 1/4".

The richer the mortar, the more shrinkage cracking will happen, that is why for this specific application, more aggregate is better.

Thanks, that makes sense.

[vertigopilot]

Re: home brew mix

The technical specification is 2-1/4 to three parts sand, by volume, of the cementious materials. 2 of the ingredients, portland and lime, are considered to be cementious for the purposes of the mortar formula.

So 5 to 6 parts aggregate in this formula. The aggregate size, blend, and total amount will vary depending upon local conditions and use.

For refractory cement use the best design is always the smallest joint possible. In a fireplace application the joint will be 1/8 to 1/4", and will have a very fine aggregate and tend to be "rich", i.e.less aggregate. For ovens the joints are much bigger and the aggregate needs to reflect that and should be a more or less evenly graded sand from dust to just under 1/4".

The richer the mortar, the more shrinkage cracking will happen, that is why for this specific application, more aggregate is better.

That is a very succinct explanation. Good advice!