论文部分内容阅读
采用挤压成形法制造水泥系材料制品,多用作幕墙等装饰材料,也可作为永久性模板使用。挤压成形水泥板制造的初期,为确保挤压成形制品的成形性和强度,一度曾使用过石棉,1980年后由于限制使用,随之开发和研究了各种纤维材料作为石棉的代替品。近年来,随着多样化代替纤维和辅助材料的使用,通过粉煤灰等水泥浆的改性,使挤压成形材料的性能比往年使用石棉时有了很大提高。随着大掺量纤维质材料形成的挤压成形性,开始了以体积
The use of extrusion molding cementitious materials manufacturing products, and more used as curtain wall decorative materials, but also can be used as a permanent template. Asbestos was first used to ensure the formability and strength of extruded products in the initial stages of the manufacture of extruded cement boards. Due to limited use after 1980, various fiber materials were subsequently developed and studied as substitutes for asbestos. In recent years, with the diversification of the use of fibers and auxiliary materials, the performance of the extruded material has been greatly improved as compared with that of asbestos in previous years through the modification of cement slurry such as fly ash. Volumetric starts with the extrusion formability of high volume fibrous materials