▎ 摘　　要

NOVELTY - Preparing a self-insulating lightweight concrete wall comprises (1) mixing the first polymer powder and the second blowing agent and spinning to obtain a polymer fiber, and then placing the polymer fiber, chain extender, graphene oxide and the carbonate in the second polymer in the powder, carrying out at 60-100 degrees C for 15-60 minutes, and finally at 150-180 degrees C for 30-50 minutes to obtain a composite porous fiber, (2) mixing fly ash, cement, fine sand, diatomaceous earth, light aggregate, composite porous fiber and waste rubber under mechanical stirring to obtain a powder mixture, (3) dispersing the water reducing agent and other auxiliary agents in water and adding them to the above powder mixture, and stirring for 60-150 seconds to obtain a mixed slurry, finally, adding the first foaming agent to the mixed slurry, stirring uniformly concrete precursor. USE - The wall has light weight, high strength, good weather resistance, it can meet industry performance index demand of the concrete wall. DETAILED DESCRIPTION - Preparing a self-insulating lightweight concrete wall comprises (1) mixing the first polymer powder and the second blowing agent and spinning to obtain a polymer fiber, and then placing the polymer fiber, chain extender, graphene oxide and the carbonate in the second polymer in the powder, carrying out at 60-100 degrees C for 15-60 minutes, and finally at 150-180 degrees C for 30-50 minutes to obtain a composite porous fiber, (2) mixing fly ash, cement, fine sand, diatomaceous earth, light aggregate, composite porous fiber and waste rubber under mechanical stirring to obtain a powder mixture, (3) dispersing the water reducing agent and other auxiliary agents in water and adding them to the above powder mixture, and stirring for 60-150 seconds to obtain a mixed slurry, finally, adding the first foaming agent to the mixed slurry, stirring uniformly concrete precursor, (4) using concrete precursor, pouring into the mold, and capping mold tightly until the mold volume is 20-60%. The foam is generated by the foaming agent to expand the mixture, and the mold is filled and allowed to stand for 1 hour, after 6 to 8 hours, solidifying mixture and the mold removal strength is reached, and then the mold can be removed and then cured to obtain the product.