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    • 50. 发明授权
    • Concrete molding with improved acid resistance
    • 具有改善耐酸性的混凝土模塑
    • US5691050A
    • 1997-11-25
    • US450076
    • 1995-05-25
    • Volkmar BergHelmut Rinno
    • Volkmar BergHelmut Rinno
    • C04B24/00C04B24/16C04B24/24C04B24/26C04B24/42C04B28/02C04B111/23E03F3/04E03F11/00B32B27/00
    • C04B24/003C04B24/16C04B24/163C04B24/243C04B24/2641C04B24/2664C04B24/2676C04B24/2688C04B24/42E03F11/00E03F3/04C04B2111/00068C04B2111/00422C04B2111/00586C04B2111/0075C04B2111/23C04B2111/56Y10S138/07Y10T428/131Y10T428/2804Y10T428/31855
    • Unreinforced or reinforced concrete moldings, for example concrete pipes, with improved corrosion resistance to acids and acidic sewage, improved permeation resistance to inorganic and organic liquids and gases and improved mechanical stability, produced by molding with machines, for example in press molding machines or extrusion machines or concrete pipe pressing machines, and allowing to harden plastic-viscous concrete mixtures of hydraulic inorganic binders, preferably cement, aggregates and water, where, in the preparation of the plastic-viscous concrete mixtures, to the latter has been added in a positive mixer an effective amount of an aqueous plastics dispersion based on anionic and hydrolysis-resistant copolymers of ethylenically unsaturated monomers, the minimum film forming temperature (MFT) of which is above the setting temperature of the concrete mixture, preferably above 23.degree. C. Use of the concrete moldings as concrete precast parts for many various applications, preferably as construction elements in building construction, road building, bridge building, civil engineering, in particular in sewage pipeline construction for underground sewer lines and service water lines.
    • 非增强或钢筋混凝土模制品,例如混凝土管道,具有改善的耐酸性和酸性污水的耐腐蚀性,改善了对无机和有机液体和气体的渗透阻力,以及通过机器成型(例如在压模机或挤压机)中提高的机械稳定性 机器或混凝土管压机,并且允许硬化水硬性无机粘合剂,优选水泥,聚集体和水的塑性粘性混凝土混合物,其中在制备塑料粘性混凝土混合物中后者已经被添加到阳性 混合有效量的基于阴离子和水解抗性的烯键式不饱和单体共聚物的水性塑料分散体,其最低成膜温度(MFT)高于混凝土混合物的设定温度,优选高于23℃。 混凝土模具作为许多应用的混凝土预制件,优选 bly作为建筑施工,道路建设,桥梁建筑,土木工程的建筑元素,特别是在地下下水道和服务水线的污水管道施工中。