Swelling of bentonite can not be baked at 105 degrees to do moisture
The numerical value is related to the sodium modification. As a kind of Ningcheng bentonite, sodium and water plus 4% soda amount after detection of swelling index 17--21; water plus 4% soda 1% additives amount of detection of swelling index of 32--36 high shear extrusion of sodium
Bentonite expansion index (expansion multiples) test standard, 105 degrees dry to constant weight, after cooling do.
