▎ 摘　　要

NOVELTY - Crack-resistant reinforced concrete comprises 70-80 pts. wt. sea sand, 40-50 pts. wt. cement, 20-30 pts. wt. modified fly ash, 10-20 pts. wt. sepiolite, 30-40 pts. wt. water, 10-20 pts. wt. polyethylene imine aqueous solution, 10-20 pts. wt. modified plant straw fiber, 7-15 pts. wt. water-soluble polyvinyl alcohol fiber, 5-10 pts. wt. nano powder and 3-5 pts. wt. silane coupling agent. USE - The crack-resistant reinforced concrete is useful for building. ADVANTAGE - The reinforced concrete has greatly improved density and strength. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for preparing crack-resistant reinforced concrete for construction comprising (i) taking an aqueous solution of dodecyl trimethyl ammonium chloride and adding fly ash, stirring at 40-50 degrees C, allowing to stand for 1-2 hours, then washing and drying to obtain the product, where the mass ratio of the dodecyl trimethylammonium chloride and fly ash is 4-5:100; (ii) adding 15-20% of the total mass of the solution to the mixed solution of a sodium hydroxide aqueous solution with a mass concentration of 4-7% and a zinc oxide aqueous solution with a mass concentration of 0.5-1.5%., airtight treatment at 70-90 degrees C for 3-5 hours, then refining treatment, mixing with acetic acid solution in a mass ratio of 1:45-1:55, stirring and mixing well, adding graphene oxide aqueous solution and stirring to obtain the product, where the plant The mass ratio of straw and graphene oxide aqueous solution is 5-8:1; and (iii) placing sea sand, cement, modified fly ash, sepiolite, water, polyethyleneimine aqueous solution, modified plant straw fiber, water-soluble polyvinyl alcohol fiber, nano powder and silane coupling agent in a mixer and mixing to obtain crack-resistant reinforced concrete for construction.