The present study investigates the fresh and hardened properties of controlled low-strength materials (CLSM) utilizing circulating fluidized bed combustion (CFBC) ashes, activated with cement or sodium carbonate. Engineering properties such as flowability, settlement, setting behavior, compressive strength, and hydration characteristics were evaluated. The results provided new insights, demonstrating that CFBC ashes can be effectively utilized in producing CLSM with suitable material design as the CLSM could achieve the required performances specified in the ACI 299R-13. The CLSM mixtures showed a self-destruction characteristic due to the formation of ettringite, while it showed stable strength development in a dry condition.

本研究利用水泥或碳酸钠活化的循环流化床燃烧（CFBC）灰，研究了受控低强度材料（CLSM）的新鲜和硬化性能。评估了工程性能，例如流动性，沉降，凝结行为，抗压强度和水合特性。结果提供了新的见解，表明CFBC灰可以有效地用于生产具有适当材料设计的CLSM，因为CLSM可以达到ACI 299R-13中规定的所需性能。CLSM混合物由于钙矾石的形成而表现出自毁特性，而在干燥条件下则表现出稳定的强度发展。