Study on Sodium Modification of Inferior Ca-Based Bentonite by Suspension Method

Table 4

Main physical properties of the bentonite.

	2HWA (%)	Dilation (mL·g^−1)	Colloid index (mL·(3 g)^−1)
(1)	586	30.6	86.0
(2)	624	35.3	89.5
(3)	593	31.3	87.4
Average	601	32.4	87.6
Ca-bent	195	8.3	19.0
Average/Ca-bent	3.08	3.90	4.61