Greetings,
If you want good adobe, rule number one, leave the cement out. They don't mix. Cement holds water, not what you want. I did fidobe with 50/50 clay and Texas heavy clay that withstood a full mud pit season, no protection and only shrank by 25%. The sample that was painted was perfect at the end of the year. My measurement are by weight, not volume. However, you have to dig quite the hole to build a house.
Ask the cob people about cement and clay building, they know.
If you want good adobe, rule number one, leave the cement out. They don't mix. Cement holds water, not what you want. I did fidobe with 50/50 clay and Texas heavy clay that withstood a full mud pit season, no protection and only shrank by 25%. The sample that was painted was perfect at the end of the year. My measurement are by weight, not volume. However, you have to dig quite the hole to build a house.
Ask the cob people about cement and clay building, they know.
Kim Travis The Rose Colored Forest Bedias, TexasOn 6/12/2014 4:39 PM, barwickraymond@yahoo.com [papercreters] wrote:
what is a good mix ratio for fiberadobe I have red Oklahoma red shale/clay that makes a good adobe brick at half sand half clay and 5% cement
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