公开(公告)号：EP3221103A1

公开(公告)日：2017-09-27

申请号：EP15784213.9

申请日：2015-10-06

Applicant: GCP Applied Technologies Inc.

Inventor： RIEDER, Klaus A. ,  HUGHES, David W. ,  MARCINKOWSKI, Lukasz M.

IPC: B28B7/46 ,  B28B11/24 ,  C04B28/02 ,  C04B40/02

CPC classification number: B28B3/04 ,  B28B7/46 ,  B28B11/245 ,  B28B13/06 ,  C04B14/04 ,  C04B18/02 ,  C04B24/121 ,  C04B28/02 ,  C04B40/0071 ,  C04B40/02 ,  C04B2103/0093 ,  Y02W30/92 ,  C04B14/06 ,  C04B14/062 ,  C04B18/08 ,  C04B24/122 ,  C04B24/2641 ,  C04B24/38

Abstract: The present invention provides a wet press process and admixture components for making concrete slabs (flags) (16), curb (kerb) units, panels, boards, and other flat shapes, whereby colloidal silica and at least one alkanolamine and optional rheology control components are employed to provide an ideal combination of pressing time, green strength, surface definition, stack-ability, final concrete strength, and permeability. Stack-ability can be expressed in terms of minimum deflection or non-eccentricity of the units while standing on thickness edges at distances apart less than width or standing height. A wet press process typically involves introducing a highly fluid concrete mix into a mold (10,12), applying hydraulic pressure to consolidate the concrete (e.g., 1000-3000 PSI) and to extract excess water, removing the pressed concrete (16) while in a green state from the mold (10,12), and then standing the slab (16) units immediately upon removal from the mold (10,12) while in a green state, on an edge adjacent to but spaced apart from other edge-standing units. In further embodiments, rounded aggregates such as naturally occurring sand and/or gravel obtained from local sources can be incorporated into the concrete slabs without defeating (vertical) stack-ability in the green state.

Abstract translation: 本发明提供了用于制造混凝土板（旗）（16），路缘石（路边石）单元，板，板和其他平板形状的湿压工艺和混合物组分，由此胶态二氧化硅和至少一种链烷醇胺和任选的流变控制组分 用于提供压制时间，生坯强度，表面清晰度，堆垛性能，最终混凝土强度和渗透性的理想组合。 堆叠能力可以用单位的最小偏差或非偏心率来表示，而以站立高度在小于宽度或站立高度的距离处站立在厚度边缘上。 湿压法通常涉及将高流动性混凝土混合物引入模具（10,12）中，施加液压以巩固混凝土（例如，1000-3000PSI）并提取多余的水，除去压制的混凝土（16），同时 以绿色状态从模具（10,12）中取出，然后立即在从模具（10,12）中取出时将板坯（16）单元立起，同时处于生坯状态，在与其它边缘相邻但与其间隔开的边缘上 - 单位。 在进一步的实施方式中，可以将从当地来源获得的圆形聚集体（例如天然存在的沙子和/或砾石）结合到混凝土板中而不会破坏生坯状态下的（垂直）堆叠能力。