Recycled concrete aggregates have been extensively studied in recent years. However, the studies that have addressed the use of the recycled aggregate in concrete subjected to freeze-thaw cycles are divergent. Thus, the present work suggests the use of recycled coarse aggregate (RCA), derived from civil construction waste, in concrete as a substitution to the natural coarse aggregate (NCA). To this end, concrete specimens were molded with replacement levels equal to 15%, 25% and 50% of the NCA for RCA, being the specimens evaluated according to the ASTM C 666-15 norm. In addition, the samples were characterized for apparent porosity and density, water absorption by capillarity, axial compression strength and dynamic modulus of elasticity. The use of recycled aggregates proved to be efficient as a possible alternative to the incorporation of air in the concretes, presenting a durability factor at the end of the cycle higher than presented by the reference mixture.

近年来，对再生混凝土骨料进行了广泛的研究。但是，针对冻融循环后的混凝土中使用再生骨料的研究存在分歧。因此，目前的工作建议在混凝土中使用源自民用建筑废料的再生粗骨料（RCA）代替天然粗骨料（NCA）。为此，模制的混凝土样品的替代含量等于RCA的NCA的15％，25％和50％，这是根据ASTM C 666-15规范评估的样品。此外，对样品的表观孔隙率和密度，通过毛细作用的吸水率，轴向压缩强度和动态弹性模量进行了表征。