Sciencemadness Discussion Board

How to protect concrete surfaces from corrosive attack of CAN ?

celia1095 - 19-4-2016 at 01:37

How to protect concrete surfaces from corrosive attack of CAN fertilizer (calcium ammonium nitrate)?
When CAN absorbs moisture from atmosphere, it becomes extremely corrosive for concrete.
Can anyone answer me ?
Thanks!!

My mail: celia1095@qq.com )

What's the difference of CAN 26% and CAN 15.5% used in fertilizer ?

celia1095 - 19-4-2016 at 01:54

What's the difference of CAN 26% and CAN 15.5% used in fertilizer ?

CAN means Calcium Ammonium Nitrate.

j_sum1 - 19-4-2016 at 02:27

At the risk of sounding simplistic, keep it off the concrete.

j_sum1 - 19-4-2016 at 02:35

10.5%

Joking aside, if you are after information on products available in your area then your best solution is to look at the label or look up the msds. Most of us are msds junkies.

This kind of question belongs in the Beginnings section. Anything without a reference does. And Organic Chemistry is for (surprise) organic chemistry.

Welcome to SM. Stick around and enjoy the wealth of information here. Do read the faq and get used to this board's culture.

hissingnoise - 19-4-2016 at 02:41

In keeping with the simplistic theme, you could, possibly, care to check out the answer already given in your identical first post!


hissingnoise - 19-4-2016 at 02:55

Quote:
What's the difference of CAN 26% and CAN 15.5% used in fertilizer ?

C.A.N possibly contains 15.5% nitric-N (rapid absorption) and 10.5 ammoniacal-N . . . ?


celia1095 - 21-4-2016 at 07:34

Thanks so much

AJKOER - 23-4-2016 at 06:27

Actually, a more interesting and not an answer for the Beginnings section is why/how is the concrete corroding? To answer, a lot more info like what is type of concrete? Do different fertilizers behave similarly with this concrete? Soil pH, rain water pH, moisture conditions, presence of iron salts,... some possible factors.

Understanding the causality may present an answer to how to avoid/stop further corrosion both visible above ground and hidden underground.

I suspect galvanic corrosion from an Fe presence To verify, place a small amount of sea salt in one of the corroding areas. If significant acceleration, a confirmation of either electrochemical reaction or an increase in the "activity coefficient" of an acid/base attack. If the pH in the area is low, add a base with more sea salt. If still corroding, than likely galvanic ( and there may be related solutions)..