A requirement of the Construction Products Regulation (CPR) in the European Union states that construction works must be designed in such a way that throughout their entire life cycle, they have no exceedingly high environmental impact. The objective of the current work was to simulate the leaching of selected metals and sulfate in vertical test panels (VTPs) covered by plaster and mortar. The investigation is based on 18-month leaching outdoor tests (LOT) under real weather conditions. A leaching model was developed using the geochemical model PHREEQC with the Lawrence Livermore National Laboratory (LLNL) thermodynamic data base and coupled with MATLAB in order to optimize the run-off and weather parameters. The model was calibrated by comparing the data from laboratory Dynamic Surface Leaching Tests (DSLT) with simulation results up to an acceptable fit. The parameters obtained were then used in the LOT simulations and validated. The model allows predictions on the substance discharge from various plasters and mortars under real weather conditions. Physical characteristics of the material (e.g., thickness and absorption capacity) play an important role in the leaching of substances in façades covered with plaster and mortar. The lower the thickness and absorption capacity of the material applied, the greater the run-off and discharge of leached substances.

欧盟《建筑产品法规》（CPR）的一项要求规定，建筑工程的设计必须使其在其整个生命周期内不会对环境造成极高的影响。当前工作的目的是模拟石膏和砂浆覆盖的垂直测试板（VTP）中某些金属和硫酸盐的浸出。该调查基于真实天气条件下的18个月浸出室外测试（LOT）。使用地球化学模型PHREEQC和劳伦斯·利弗莫尔国家实验室（LLNL）热力学数据库开发了一种浸出模型，并与MATLAB结合使用，以优化径流和天气参数。通过将实验室动态表面浸出测试（DSLT）的数据与模拟结果进行比较，以达到可接受的拟合度，从而对模型进行了校准。然后将获得的参数用于LOT仿真中并进行验证。该模型可以预测实际天气条件下各种灰泥和灰泥的物质排放量。材料的物理特性（例如厚度和吸收能力）在用灰泥和灰泥覆盖的立面中物质的浸出中起着重要作用。所用材料的厚度和吸收能力越低，则沥滤物质的径流和排出量越大。该模型可以预测实际天气条件下各种灰泥和灰泥的物质排放量。材料的物理特性（例如厚度和吸收能力）在用灰泥和灰泥覆盖的立面中物质的浸出中起着重要作用。所用材料的厚度和吸收能力越低，则沥滤物质的径流和排出量越大。该模型可以预测实际天气条件下各种灰泥和灰泥的物质排放量。材料的物理特性（例如厚度和吸收能力）在用灰泥和灰泥覆盖的立面中物质的浸出中起着重要作用。所用材料的厚度和吸收能力越低，则沥滤物质的径流和排出量越大。