Given that concrete is the second most-consumed resource in the world after water, and that most buildings are constructed in whole or in part of this cement composite, it is important to understand the impact that this material has on energy performance. In order to evaluate the hygrothermal and mechanical performance of concrete when used in buildings, this study compared different sustainable concrete mix designs. Properties such as density, porosity, specific heat capacity, and thermal conductivity of four different mixes were analyzed through hygrothermal simulations using WUFI® Plus software. Test results reveal that the hygrothermal performance of concrete can be enhanced without diminishing the value of its mechanical properties, while reducing CO₂ emissions at the same time. It was also found that the use of recycled aggregates coupled with supplementary cementitious materials can give a high strength concrete with lower environmental impacts in terms of energy consumption and carbon footprint.

鉴于混凝土是仅次于水的世界第二大消耗资源，并且大多数建筑物全部或部分用这种水泥复合材料建造，因此了解这种材料对能源性能的影响非常重要。为了评估在建筑物中使用时混凝土的湿热和机械性能，本研究比较了不同的可持续混凝土配合比设计。通过使用WUFI®Plus软件进行的湿热模拟，分析了四种不同混合物的密度，孔隙率，比热容和导热系数等特性。测试结果表明，在不降低其机械性能值的情况下，可以提高混凝土的湿热性能，同时减少CO _2。同时排放。还发现，将再生骨料与辅助胶凝材料结合使用可以产生高强度的混凝土，就能耗和碳足迹而言，对环境的影响较小。