在房屋建筑的墙体施工中,一种预填骨料然后喷砂的特殊混凝土技术,曾在挪威采用,现已推广到西欧和美国。 这种称为自然混凝土(Naturbetong)的外装饰混凝土在美国有很大发展前途,因为它提供了一种没有裂纹、没有施工缝和其他不规则疵病的墙体,墙面并可做成不同的花纹和颜色(图1)。 In the construction of walls in houses, a special concrete technology with pre-filled aggregates and then blasted sand was used in Norway and has now been extended to Western Europe and the United States. This kind of exterior decorative concrete called Natural Concrete has great potential for development in the United States, because it provides a wall that has no cracks, no construction joints, and other irregular flaws. Walls can be made different. The pattern and color (Figure 1).