▎ 摘　　要

NOVELTY - A nano-bamboo fiber dry-mixed mortar comprises 25-50 pts. wt. cement base, 60-65 pts. wt. inorganic fine aggregate, 5-8 pts. wt. mineral admixture, 2-5 pts. wt. graphene modified nano bamboo fiber, 0.1-0.3 pt. wt. methyl cellulose, 1-6 pts. wt. latex powder, 0.2-0.4 pt. wt. retarder, 0.02-0.1 pt. wt. polyaniline and 0.2-0.3 pt. wt. defoamer. USE - Nano-bamboo fiber dry-mixed mortar with high tensile bond strength used in building bricks. ADVANTAGE - The dry-mixed mortar effectively absorbs dust and small particles during the stirring process by adding graphene-modified nano-bamboo fibers to avoid dust. In the molding process, the flexibility and better surface interface of graphene-modified nano-bamboo fibers with low crystallinity after ball milling can build a stronger and more stable network structure, which greatly improves the tensile strength and cohesion of dry-mixed mortar and achieves significant economic and environmental benefits. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of the nano-bamboo fiber dry-mixed mortar of high tensile bond strength, which involves (1) adding water to the retarder to prepare a solution of 34-50 wt.%, (2) mixing methyl cellulose and latex powder to obtain mixture (A), mixing cement base material with inorganic fine aggregate, mineral admixture and graphene-modified nano-bamboo fiber mechanically uniformly to obtains mixture (B), (3) mixing mixture (A) and mixture (B) evenly and (4) adding the retarder solution, polyaniline, and defoamer to the material obtained in step (3) in the form of spraying respectively.