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德克萨斯州圣安东尼奥:地标建筑奥尔莫斯大坝建于1925年,至今仍是该市抵御洪水的第一道防线。这些堤坝高60英尺(约18米),长2000英尺(约614米)。4G表面防护涂料和世界最佳涂鸦涂料被指定用于这一重要历史建筑的长期保护和维护。
由于经常下雨且湿度高,老旧的多孔混凝土特别容易发霉,多年来奥尔莫斯大坝经常成为涂鸦破坏的目标。
这就是为什么圣安东尼奥市正在寻找保存和保护大坝墙的最佳方法,并咨询 PPG 建筑团队以找到合适的解决方案。
最终目标是保留混凝土的自然外观,而不是使其因暴露在风雨和紫外线下而泛黄、剥落或开裂的光泽。基于这一理念,PPG 建议他们使用 4G 表面防护剂,其工作原理是渗透多孔矿物表面,形成疏水疏油的表面,有效抵御污垢和涂鸦,并实现长期防腐。

在这种情况下,为了增强效果,并方便仅用热水即可去除涂鸦,市政府选择使用“世界最佳涂鸦涂料”作为最终涂饰。这种石蜡乳液具有成膜性,但仍保持柔韧性,使墙壁透气,是一种天然的涂饰剂。
4G表面防护的应用:墙壁

测试4G表面保护膜的疏水性

测试世界上最好的涂鸦涂层

将这些产品一起使用的一大优势是,任何后续的涂鸦都可以仅使用热水快速轻松地去除。
应用起来快捷简单,快速的覆盖率和宽容的哑光效果使它们比其他密封剂具有经济优势,特别是对于像这样的基础设施项目,其中涂层要施加到一定高度,并且在停止处没有任何可见的差异。



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