Methods of reducing hydroxyl ions in concrete pore solutions
    2.
    发明申请
    Methods of reducing hydroxyl ions in concrete pore solutions 审中-公开
    降低混凝土孔隙溶液中羟基离子的方法

    公开(公告)号:US20060042517A1

    公开(公告)日:2006-03-02

    申请号:US10927733

    申请日:2004-08-27

    IPC分类号: C04B28/04

    摘要: Methods of reducing hydroxyl ions in concrete pore solutions are provided. Such methods are useful in providing resistance to gels which form in concrete due to the alkali-silica (ASR) reaction. The methods comprise, in one aspect, adding a salt to the concrete, in aqueous or solid form, the salt having a cation higher in valence than the anion. In other aspects, the methods of the present invention comprise adding an acidic phosphate or a silicon-containing alkoxide to the concrete. All of the above methods are useful in reducing hydroxyl ions in concrete. Such methods can be used to prevent ASR in fresh concrete, or to remediate ASR in hardened concrete.

    摘要翻译: 提供了减少混凝土孔溶液中羟基离子的方法。 这种方法可用于提供由于碱 - 二氧化硅(ASR)反应而在混凝土中形成的凝胶的抗性。 在一个方面,所述方法包括以水溶液或固体形式向混凝土中加入盐,所述盐的阳离子的价数高于阴离子。 在其它方面,本发明的方法包括向混凝土中加入酸性磷酸盐或含硅醇盐。 所有上述方法都可用于减少混凝土中的羟基离子。 这种方法可用于防止新拌混凝土中的ASR或修复硬化混凝土中的ASR。

    High performance elastomer-containing concrete material
    8.
    发明申请
    High performance elastomer-containing concrete material 审中-公开
    高性能弹性体混凝土材料

    公开(公告)号:US20020198291A1

    公开(公告)日:2002-12-26

    申请号:US10039473

    申请日:2002-01-04

    IPC分类号: C08K005/16 C08K003/34

    摘要: A concrete material that includes an elastomeric polymer in an amount sufficient to provide flexibility to the resultant material; a silicone resin in an amount sufficient to improve adhesion between the elastomeric polymer and the cement; a cement that has low shrinkage and expansion properties; a filler; and water in an amount sufficient to cure the cement and form the concrete material. The polymer is present in an amount which fills at least some of the pores in the material and the silicone resin helps the polymer bond the filler to the cement. Also, a concrete material property improving additive in the form of a polymer admixture that includes the elastomeric polymer, a silicone resin and at least one solvent in an amount sufficient to form a viscous flowable mass. Another embodiment is a method of forming a concrete material by forming and curing a mixture of the additive, a cement that has low shrinkage and expansion properties, a filler, and water in an amount sufficient to cure the cement. Another embodiment is a method of repairing a crack or fracture in a concrete or cement surface by cleaning surfaces of the crack or fracture to remove loose material and to create a cavity, applying the concrete material of the invention under pressure into the cavity, and allowing the concrete material to cure to repair the crack or fracture. The resultant repaired surface forms yet another embodiment of the invention.

    摘要翻译: 一种混凝土材料,其包括足以为所得材料提供柔性的量的弹性体聚合物; 足以提高弹性体聚合物和水泥之间的粘合力的有机硅树脂; 具有低收缩和膨胀性能的水泥; 填料; 和足以固化水泥并形成混凝土材料的量的水。 聚合物的存在量可以填充材料中的至少一些孔隙,而硅树脂有助于聚合物将填料与粘结剂结合。 而且,聚合物混合物形式的混凝土材料性能改进添加剂包括弹性体聚合物,硅树脂和足以形成粘性可流动物料的量的至少一种溶剂。 另一个实施方案是通过使添加剂,具有低收缩和膨胀性能的水泥,填料和足以固化水泥的量的混合物的混合物形成和固化来形成混凝土材料的方法。 另一个实施例是通过清洁裂纹或断裂表面来修复混凝土或水泥表面中的裂缝或断裂的方法,以去除松散的材料并产生空腔,将本发明的混凝土材料在压力下施加到空腔中,并允许 用于修复裂缝或断裂的混凝土材料。 得到的修补表面形成本发明的另一个实施例。