In this experiment, 3-Aminobenzenesulfonicacid(3-ABSA) was synthesized by catalyzing the hydrogenation of 3-nitrobenzenesulfonic acid(3-NBSA)with modified raney Ni catalyst.
Aminobenzenesulfonicacid super-plasticizer is selected though cement paste test, which be provided with high water-reducing property, low slump loss and good compatibility with cement.