| 摘要 |
<p>PURPOSE: A method for manufacturing a stiff consistency concrete block is provided to prevent the breakage of the concrete block and reinforce a freezing and thawing preventive property using waste concrete based recycled aggregate. CONSTITUTION: Waste concrete based recycled aggregate, sand, cement, and gypsum are introduced into a mixer. A mixing operation is performed(S1). One or two of a water repellent agent, a waterproof agent, and a water reducing agent are mixed to prepare a solution. The solution is sprayed into the mixer in order to prepare a dry composition(S2). The dry composition is introduced into a block mold. A mixture of water, and the water repellent agent or the waterproof agent is coated on the surface of a molded block(S4).</p> |
