水泥本身ph值11鹼性，所以上行 ph neutral 是什麼意思？表面中性？
So I heard of this sculptor, Jason Decaires Taylor, who makes underwater sculptures for the purpose of creating artificial coral reefs. If you are not familiar with his work, check it out:http://www.jasondecairestaylor.com/
I have scoured the internet for interviews with him, and news articles related to his work, to try and find out what kind of cement he is using. The only thing I could find out is that it is 'grade 2 cement' which is marine grade, and he mixes sand and micro silica. He also mentions using 'various other additives' to make the cement ph neutral, which is important to promote coral growth.
Does anyone have any idea what one might mix with cement to make it ph neutral?? I'm convinced the cement is important, because coral take to his sculptures so well. Coral will grow on many things, but not as well, and with the same results.
I also found a technique called 'Biorock' with looks pretty interesting, but not really my style. http://www.biorock.net/Technologies/index.html
With a little bit of electricity, you can make steel structures come to life!!
Seeing Taylor's work raised my interest in under water sculpture in general, but I think cement seems more natural and would integrate itself better in the environment. But what mixture is Taylor using??! Any thoughts?