Artificial basalt composition, building material manufactured by the artificial basalt composition and method for manufacturing the same

摘要

PURPOSE: Provide is a manufacturing method of artificial basalt having the feeling and shape similar to natural basalt, high mechanical strength by using waste stone and stone powder as aggregates. The resultant basalt is applied to construction materials such as bricks, pavement blocks and curbstones. CONSTITUTION: The artificial basalt composition comprises 40-65pts.wt. of a first aggregate(19-25mm), a second aggregate containing 12-26pts.wt. of sand(2-6mm) and 8-22pts.wt. of stone powder(up to 2mm), 8-20pts.wt. of cement, 0.2-0.8pts.wt. of pigment, 0.01-0.05pts.wt. of admixture and 3-8pts.wt. of water. The manufacturing method of basalt comprises the steps of; mixing the above materials; forming a silicon mold corresponding to natural basa attaching the mold to a frame by heating and pressing method, filling the mold with heated sands(30-40deg.C) for 24hrs, removing sands, and washing; pouring the mixture into the mold; vibrating the mixture at high(200Hz) and low(50-60Hz) frequencies; compressing the mixture with 10-20kg of plate; curing. The silicon mold with a lot of protrusions corresponding to pores of natural basalt, is formed by cutting natural basalt, washing and drying at 100deg.C over 2hrs, coating basalt with mold-release agents, coating a gel type mixture of silicon and hardener, mixed in a ratio of 1:1, on basalt, and separating the hardened mixture from basalt.