Fecha de publicación: 30/08/2022 Fuente: WIPO "hemp" The invention discloses a China-hemp concrete U-shaped prefabricated part and a preparation method thereof, and relates to the technical field of concrete. The physical performance of the concrete is improved; the concrete comprises the following raw materials in parts by weight: 10-15 parts of hemp fibers, 0.05-0.2 part of plant seeds, 5-20 parts of sandy loam, 110-128 parts of cement, 100-128 parts of gypsum, 60-78 parts of fly ash and 60-73 parts of mineral powder. The preparation method comprises the following steps: firstly, mixing the hemp fibers, the plant seeds, the sandy loam, the cement, the gypsum, the fly ash, the mineral powder and the coarse aggregate for 1-3 minutes by using a vibrating stirrer; according to the invention, hemp is adopted as reinforced fibers, so that the physical properties such as fracture resistance and cracking resistance of the concrete are effectively improved, and the service life is guaranteed; in addition, the production and processing processes of the China-hemp straw fiber are green and pollution-free, and the China-hemp straw fiber has the characteristics of low price, high specific strength and reproducibility.