The invention relates to a high-limestone-flour-adulterate-amount composite enhanced
grinding aid for
cement and a preparation method of the high-limestone-flour-adulterate-amount composite enhanced
grinding aid. The preparation method comprises the following steps that 1, materials including 18%-25% of
triethanolamine, 8%-15% of
triisopropanolamine, 20%-28% of ethanediol, 8%-12% of molasses, 4%-8% of polycarboxylate
superplasticizer, 6%-10% of
sodium sulfate, 5%-8% of glacial
acetic acid and 2%-24% of water are taken; 2, the water is poured into an
agitator kettle, and
sodium sulfate is added to be stirred till
sodium sulfate is completely dissolved; 3, glacial
acetic acid is added to be completely dissolved,
triethanolamine,
triisopropanolamine, ethanediol, molasses and polycarboxylate
superplasticizer are sequentially added after glacial
acetic acid is dissolved, stirring continues to be carried out for 20-30 minutes, and the high-limestone flour-adulterate amount composite enhanced
grinding aid is obtained. The high-limestone-flour-adulterate-amount composite enhanced grinding aid has the advantages that
cement particles are prevented from clustering, and the
cement particles are kept in a high homodisperse state; the strength of an interfacial transition zone is increased, and the strength of the cement is further increased; the grinding aiding efficiency of the grinding aid is improved.