The construction industry is becoming circular, where resources are used in a closed loop. However, no standard method is available for measuring the circularity performance of building components. The Material Circularity Indicator (MCI) is one of the most ambitious methods. However, the MCI is criticized for its reliance on mass flow and the over-optimistic assumption regarding residual value. The research thus aims to adapt the MCI by addressing these limitations by using the economic value (E) as the measurement unit and introducing a new indicator of residual value (R). A residual value calculator is also developed to quantify R. A case study approach is adopted to evaluate the effect of E and R individually. The results show that using E can award materials’ contributions regarding circularity based on their relative value. Furthermore, using R can capture value change and provides different significance to materials input and output considering value difference.

建筑业正在变得循环，其中资源在闭环中使用。然而，没有标准方法可用于测量建筑构件的圆形性能。材料圆形度指标 (MCI) 是最雄心勃勃的方法之一。然而，MCI 因其对质量流量的依赖和对剩余价值的过度乐观假设而受到批评。因此，本研究旨在通过使用经济价值 (E) 作为衡量单位并引入新的残值 (R) 指标来解决这些限制，从而调整 MCI。还开发了一个残值计算器来量化 R。采用案例研究方法来单独评估 E 和 R 的影响。结果表明，使用 E 可以根据材料的相对价值来奖励材料在循环性方面的贡献。此外，