| 摘要 |
A composition and method for removing hardened or semi-hardened cementitious substances such as concrete, plaster, mortar, grout and similar substances from surfaces such as exterior and interior building surfaces and exterior surfaces of automobiles. The composition includes anhydrous citric acid as an ingredient together with a thickening or viscosity building agent and a wetting agent. The composition is inherently non-aggressive and environmentally friendly. Therefore, the composition is not hazardous to users and is unlikely to damage surfaces from which the cementitious substance is to be removed. |
