Process for preparing a filler for asphalt or concrete starting from a slag material
    19.
    发明授权
    Process for preparing a filler for asphalt or concrete starting from a slag material 有权
    从渣料开始制备用于沥青或混凝土的填料的方法

    公开(公告)号:US08628612B2

    公开(公告)日:2014-01-14

    申请号:US12602009

    申请日:2008-06-02

    摘要: The present invention relates to a process for preparing, starting from a slag material, a filler for construction materials which contain bitumen or a hydraulic binding agent. The slag used to prepare the filler contains γ-dicalcium silicate. The process comprises the step of removing from the slag material a finer fraction formed by particles of a size between 0 and at least 0.75 mm so as to reduce the γ-dicalcium silicate content of the slag material; and the step of finely milling at least a portion of the remaining coarser fraction of the slag to obtain the filler. The invention also relates to the obtained filler, to the use thereof for preparing construction materials and to concrete or mortar compositions and asphalt compositions containing the filler. By removing the finer fraction from the slag material, a filler is obtained which has a considerably lower water content so that it becomes suitable for use in asphalt or concrete or mortar compositions, in particular in self-compacting concrete compositions.

    摘要翻译: 本发明涉及从炉渣材料制备含有沥青或液压粘合剂的建筑材料填料的方法。 用于制备填料的炉渣含有γ-二硅酸钙。 该方法包括从矿渣材料中除去由0至至少0.75mm之间的颗粒形成的较细部分以降低炉渣材料的γ-二硅酸钙含量的步骤; 以及将渣的剩余较粗部分的至少一部分精细研磨以获得填料的步骤。 本发明还涉及所获得的填料,其用于制备建筑材料的用途以及含有填料的混凝土或砂浆组合物和沥青组合物。 通过从矿渣材料中除去更细的部分,获得了具有相当低的水含量的填料,使得其适合用于沥青或混凝土或砂浆组合物,特别是在自密实混凝土组合物中。