▎ 摘　　要

NOVELTY - Anti-cracking building material comprises 60-80 pts. wt. cement, 80-95 pts. wt. regenerated concrete micro-powder, 70-80 pts. wt. fly ash, 18-25 pts. wt. kaolin or modified metakaolin, 3-8 pts. wt. sodium perborate, 2-6 pts. wt. polycarboxylic acid water reducing agent, 3-7 pts. wt. retarder, 2-6 pts. wt. stabilizer, 25-35 pts. wt. auxiliary agent and 45-60 pts. wt. water. USE - The building material is useful for building engineering, concrete, cement, fine aggregate sand, coarse aggregate stone, fly ash, calcium sulfoaluminate, unslaked lime, micro-silicon powder, slag, montmorillonite, reinforcing agent and water. ADVANTAGE - The crack-resistant building material has high compressive strength, good anti-cracking performance, good construction performance and so on. The method is simple, and safety is environment-friendly. The polypropylene fiber has light weight, good toughness, corrosion resistance, low doping amount and low cost, high mechanical resistance and rigidity characteristics, but the non-polar chemical property causes the hydrophilic difference to make it difficult to be added to the cement-based material. The polymer fiber not only can be used as non-structural reinforcing material to effectively reduce the production and development of plastic shrinkage crack of concrete early, the fine structure in the concrete is improved, reducing the development of internal primary crack, but also can improve the compressive strengths of the concrete, has obvious economic benefit and social benefit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing anti-cracking building material.