Daza Lucas, Gómez René, Díaz-Noriega Ramón, Gómez-Espina Roberto, Skrzypkowski Krzysztof, Jerez Oscar
Faculty of Engineering, Universidad de Concepción, Concepción 4070415, Chile.
Faculty of Civil Engineering and Resource Management, AGH University of Krakow, 30-059 Krakow, Poland.
Materials (Basel). 2025 Jul 3;18(13):3157. doi: 10.3390/ma18133157.
The increasing generation of mine tailings poses significant environmental challenges, but their reuse in construction materials offers a sustainable solution by reducing the demand for natural aggregates. To advance the use of tailings in construction, the thermal conductivity of mortar samples incorporating copper mine tailings as partial replacements (10% to 50%) for coarse aggregates was investigated. The thermal conductivity was measured using the transient line source method, revealing a progressive increase from 0.32 W/m·K (control sample) to 0.52 W/m·K (50% replacement sample). The statistical analysis (ANOVA) confirmed significant differences among the sample groups, with the tailings content being a key factor. The higher thermal conductivity is attributed to the quartz-rich composition of the tailings, which enhances the heat transfer compared to conventional aggregates. The findings of this study contribute to demonstrating the feasibility of using mortar with copper tailings to modify the thermal conductivity of mortar.
越来越多的尾矿产生带来了重大的环境挑战，但其在建筑材料中的再利用通过减少对天然骨料的需求提供了一种可持续的解决方案。为了推动尾矿在建筑中的应用，研究了以铜矿尾矿作为粗骨料的部分替代品（10%至50%）的砂浆样品的热导率。热导率采用瞬态线源法测量，结果显示从0.32瓦/米·开尔文（对照样品）到0.52瓦/米·开尔文（50%替代样品）逐渐增加。统计分析（方差分析）证实了样品组之间存在显著差异，尾矿含量是一个关键因素。较高的热导率归因于尾矿富含石英的成分，与传统骨料相比，这增强了热传递。本研究结果有助于证明使用含铜尾矿的砂浆来改变砂浆热导率的可行性。
