The adsorption capacity of kaolinite,montmorillonite,and illite on polycarboxylate superplasticizer(PCE) were analyzed by Gel Permeation Chromatography(GPC).The result shows that montmorillonite has a remarkable adsorption capacity on PCE.When the concentration of PCE was 2.00 g/L,the adsorption capacity of kaolinite and illite were only 2.01 mg/g and 4.59 mg/g,while the montmorillonite reached 7.18 mg/g.In addition,with the increase of PCE concentration and temperature,the adsorption capacity of montmorill...