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镜面清水混凝土表观质量研究及工程应用

Study on the Apparent Quality of Mirrored-finished Concrete in Practical Engineering

  • 摘要: 表观质量是评价镜面清水混凝土工程品质的关键指标,而模板方案的选择对其表观质量具有显著影响。为探究不同模板材料对镜面清水混凝土表观性能的作用机制,获取最优模板工艺参数,本文开展了专项对比研究。以广东省揭阳市桑浦山站工程为工程依托,设计钢模板内贴1.5 mm亚克力板和钢模板内涂HD-6长效模板漆(环氧树脂材料)两种模板方案。通过系统测定混凝土表面的平整度、光泽度、色泽度及气泡特征(尺寸与数量)等关键指标,定量评价不同模板方案对镜面清水混凝土表观质量的影响规律。研究结果表明:钢模板内贴亚克力板方案相较于HD-6模板漆方案在混凝土表面光泽度上能提高68.7%、色泽度降低55.1%,同时在气泡等相关指标方面均能达到规定的饰面清水混凝土要求,每平方米气泡面积可降低27.9%。但该方案的光泽度受外界环境及时间表现出较强的敏感性,其稳定性有待进一步改善。本研究成果为建立镜面清水混凝土标准化施工工艺及建立科学的外观质量检测体系提供了理论依据和技术参考。

     

    Abstract: The apparent quality is a key indicator for evaluating the quality of mirrored fair-faced concrete engineering, and the selection of formwork scheme has a significant impact on its apparent quality. In order to explore the mechanism of different template materials on the apparent properties of mirror like plain concrete and obtain the optimal template process parameters, this paper conducted a special comparative study. Based on the Sangpu Mountain Station project in Jieyang City, Guangdong Province, two formwork schemes were designed: steel formwork with 1.5+mm acrylic board pasted inside and steel formwork with HD-6 long-lasting formwork paint (epoxy resin material) coated inside. By systematically measuring key indicators such as the flatness, glossiness, color, and bubble characteristics (size and quantity) of the concrete surface, the influence of different formwork schemes on the apparent quality of mirrored fair-faced concrete can be quantitatively evaluated. The research results show that compared with the HD-6 template paint scheme, the steel template with acrylic board can increase the glossiness of the concrete surface by 68.7% and reduce the color by 55.1%. At the same time, it can meet the requirements of the decorative plain concrete in terms of bubbles and other related indicators, and the bubble area per square meter can be reduced by 27.9%. However, the glossiness of this scheme is highly sensitive to external environment and time, and its stability needs further improvement. The research results provide theoretical basis and technical reference for establishing standardized construction technology of mirrored fair-faced concrete and establishing a scientific appearance quality inspection system.

     

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