| 摘要 |
A first non-asbestos inorganic hardened composition comprising a mixture of 100 parts by weight of cement, 5 to 60 parts by weight of quartzite powder, 5 to 60 parts by weight of wollastonite, and 0.1 to 10 parts by weight of fiber, mixed with an appropriate amount of water, molded, and hardened, and a second non-asbestos inorganic hardened composition based on the first composition, further comprising: (A) 0.2 to 8 parts by weight of an alkali metal chloride or an alkaline earth metal chloride, and/or (B) 0.1 to 6 parts by weight of a water reducing agent and 0.1 to 4 parts by weight of a thickener; and a method for producing a non-asbestos inorganic hardened composition comprising adding an appropriate amount of water to the above composition, and subjecting the mixture to an extrusion process, a roll pressing process, and a flat pressing process followed by hardening and curing. |
