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在土遗址的化学加固保护中,加固前后土的颜色变化是判定材料是否适用的指标之一。本文在论述了颜色的相关概念和理论的基础上,分析了目前广泛使用的色差计在土遗址保护应用中的不足。综合考虑测定的客观性、适宜性和简便性,提出用孟塞尔系统记录土体颜色,用灰色样卡评定加固前后土的色差变化。同时,结合现有国标和行标,给出了容差的建议值。
In the chemical reinforcement of the soil site protection, the color change of the soil before and after reinforcement is one of the indexes to judge whether the material is suitable or not. Based on the discussion of the related concepts and theories of color, this paper analyzes the shortcomings of the currently used color difference meter in the protection of earth ruins. Taking into account the objectivity, suitability and simplicity of the determination, the authors propose using Munsell system to record the color of soil and using gray sample card to evaluate the color change of soil before and after reinforcement. At the same time, combined with the existing national standard and line standard, gives the recommended value of tolerance.