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    • 7. 发明授权
    • Method of making a concrete stepping stone whose upper surface
replicates grouted stones
    • 制造具体的踏脚石的方法,其上表面重复灌浆
    • US5855958A
    • 1999-01-05
    • US568787
    • 1995-12-07
    • Lawrence Edward Nash
    • Lawrence Edward Nash
    • B28B7/00B28B7/38B28B11/00C04B28/02C04B41/45C04B41/61B05D3/00B28B1/08B28B11/08
    • C04B41/009B28B11/002B28B7/007B28B7/38C04B28/02C04B41/4578C04B41/61C04B2111/542
    • A method of making a cast concrete stepping stone whose exposed upper surface has the appearance of two or more grouted attractive natural stepping stones. A liquid release agent is applied to the mold which is then placed on a vibrator table and filled with wet concrete. The mold is vibrated for about 30 seconds and the surface of the concrete troweled smooth. Dry body color is sprinkled over the concrete surface and troweled to completely cover the concrete. A dry release agent containing powdered color having a darker shade than the body color is sprinkled over the dry body color covering the concrete. The desired pattern is then pressed into the surface of the concrete and after a six hour drying time, the cast stepping stone is removed from the mold. Excess body color and release agent are washed away and the washed surfaces totally dried. Finally a clear concrete sealer is applied to the exposed upper surface of the concrete stepping stone.
    • 一种制作混凝土踏脚石的方法,其露出的上表面具有两个或更多个灌浆有吸引力的天然垫脚石的外观。 将液体脱模剂施加到模具上,然后将其放置在振动台上并填充湿混凝土。 模具振动约30秒,混凝土表面光滑。 干燥的身体颜色洒在混凝土表面上,并被抹去以完全覆盖混凝土。 将含有比体色更暗的粉色的干性脱模剂喷洒在覆盖混凝土的干燥体颜色上。 然后将所需的图案压入混凝土的表面,并经过6小时的干燥时间后,将铸造的踏脚石从模具中取出。 洗涤过量的身体颜色和脱模剂,并将洗涤的表面完全干燥。 最后,将混凝土密封剂应用于混凝土踏脚石的暴露上表面。