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    • 1. 发明公开
    • METHOD FOR PRODUCING CONCRETE ARTICLES
    • VERFAHREN ZUR HERSTELLUNG VON BETONARTIKELN
    • EP1661678A1
    • 2006-05-31
    • EP04748555.2
    • 2004-07-16
    • Adminis, Girts
    • Adminis, Girts
    • B28B1/04
    • B28B3/10C04B28/02C04B2111/00068C04B2111/00198C04B2111/29C04B2111/542C04B14/06C04B14/10C04B20/0076C04B40/0259
    • The invention relates to building engineering. The inventive method for producing concrete articles consists in preparing a fine grained mixture using a quartz filler whose grain size is equal to or less than 10 mm at a finesse modulus (M) ranging from 1.75 to 3.0 and a clay and dust particle content equal to or less than 3.0 mass %. Said method also consists in filling a mould with said concrete mixture, removing forms and conditioning in a temperature-humidity conditions ensuring the hardening of the concrete mixture. The mould is filled by layered consolidation of the concrete mixture arranged in the mould by layers whose thickness is equal or less than 200 mm. A water-to-cement ratio (W/C) is selected according to the finesse modulus of the quartz filler in compliance with a relation:
      W/C=(0.9 ÷1.1) * (0.72-0.2 *M). A pressure ranging from 1.8 to 2.9 kN/cm 2 is applied for compacting concrete by ramming means. Said invention makes it possible to produce concrete articles provided with a dust-free, wear resistant sandstone-like surface exhibiting a high frost resistance.
    • 本发明涉及建筑工程。 用于生产混凝土制品的本发明的方法在于,使用石英填料制备细粒混合物,所述石英填料的粒度等于或小于10mm,细度模量(M)为1.75-3.0,粘土和粉尘颗粒含量等于 或小于3.0质量%。 所述方法还包括用所述混凝土混合物填充模具,在保证混凝土混合物硬化的温度 - 湿度条件下去除形状和调理。 模具通过厚度等于或小于200mm的层通过层压固结在模具中的混凝土混合物填充。 根据W / C =(0.9÷1.1)*(0.72-0.2 * M)的关系,根据石英填料的精细度模量来选择水与水泥比(W / C)。 压力范围为1.8〜2.9kN / cm 2,用于压实混凝土。 本发明使得可以生产具有耐磨性的无尘,耐磨的砂岩状表面的混凝土制品。
    • 4. 发明授权
    • METHOD AND APPARATUS FOR FORMING PARTICLES INTO SHAPED ARTICLES
    • 将颗粒形成成型制品的方法和装置
    • EP0114885B1
    • 1990-06-27
    • EP83902704.2
    • 1983-07-11
    • SXD REFRACTORIES, INC.
    • FREY, David, JohnWIER, Keith, Edward
    • B28B1/04
    • B30B11/022B28B3/022
    • Method and apparatus for forming fine, relatively dry particles into shaped refractory, ceramic and porcelain preforms or similar compacted articles by confining the loose particles in a shaped enclosure having at least one movable, preloaded side to maintain the particles in a loose but contiguous mass, accelerating the mass of particles and at least a portion of the mold in such a manner as to induce a positive or negative acceleration of the mass of a magnitude at least 25 to 50 g's, depending upon the particle composition, and preferably in the range of 500 g's, or greater, again depending on the particle composition, in order that each particle undergoes a force generating impact with adjacent particles to homogenously compact and fuse the adjacent particles one to the other in a nonbridging manner. A preferred apparatus (20) for accomplishing the abrupt acceleration and deceleration of the particles comprises a mold (10) having fixed sidewalls (11) and at least one movable end wall (13) positioned on a vertically oscillating table (21) and confined above the table (21) by an underdamped system tuned to a frequency corresponding to the frequency of oscillation of the table (21), and preferably including a pneumatic cylinder (30) and a punch member (12) to provide the desired preload to the mass. In operation, the pneumatic cylinder (30) and overload structure are tuned to reciprocate with the mold (10) approximately 180o out of phase with the table (21) such that the mold (10) is accelerated upward by the table (21) upon impact of the mold (10), descending pneumatic cylinder (30) and punch (12) with the table (21) in order that the particles are abruptly accelerated and/or decelerated thereby generating compacting and fusing forces at each particle throughout the particle mass.