▎ 摘　　要

NOVELTY - Preparing concrete comprises (i) taking 15 pts. wt. graphene oxide, 15 pts. wt. sepiolite, 9 pts. wt. shell powder, 4 pts. wt. water-soluble silicate, 40 pts. wt. 42.5 #common silicate cement, and 5 wt.% cement of nano silicon dioxide fiber, the edge of the graphene oxide is grafted with octadecylamine, grafting rate is 80%; substituting part of magnesium ion in sepiolite molecular framework by hydrogen ion, the substitution rate is 92%, and the nano silicon dioxide fiber is short fiber with length-diameter ratio of 5:1; and (ii) adding graphene oxide, sepiolite, shell powder, water-soluble silicate and cement into ball milling tank, and adding zirconia ball milling ball based on ball material mass ratio of 20:1, the rotation speed is 400 revolutions/minute, the revolution speed is 400 revolutions/minute, ball milling and mixing, transferring ball grinding material and nano silicon dioxide fiber into mixer, stirring and mixing for 2 hours, discharging and packing. USE - The method is useful for preparing concrete. ADVANTAGE - The concrete: has high waterproof and corrosion resistant and can keep stable for long time in sea environment.