▎ 摘　　要

NOVELTY - High strength artificial aggregate comprises 100 pts. wt. cement, 10-20 pts. wt. sand, 0.015-0.025 pts. wt. graphene powder, 5-15 pts. wt. photocatalyst powder, 1-2 pts. wt. high performance water reducing agent and the photocatalyst is titanium dioxide including anatase and/or rutile; cement including portland cement, coarse steel cement, ultra-rough steel cement, ultra-fast hardness cement and/or white cement. The high performance water reducing agent includes naphthalene-based or poly carboxylic acid-based, 1-5 pts. wt. fine silica powder, 0.1-1 pts. wt. thickener includes cellulose-based or polysaccharide-based and 1-5 pts. wt. expanding agent including calcium sulfur aluminate, anhydrite, quicklime and/or cement powder, and high-strength artificial aggregate mixes the composition with water, curing and pulverizing into 3-20 mm. USE - The artificial aggregate is useful for concrete products including roadway blocks, boundary stones and revetment blocks. ADVANTAGE - The high strength artificial aggregate purify harmful ingredients adhering to concrete products and structures; can decompose and remove nitrogen oxides, sulfur oxides and odor gases and enable concrete products and structures to provide the ability to reduce fine dust and is economical.