Environmental considerations have caused the alkali-activated slag (AAS) cements to emerge as a promising sustainable substitute for the ordinary Portland cement (OPC). This study is aimed to the results of some comprehensive experimental researches performed on the AAS concrete with different types of partial replacement of binder including fly ash, silica fume, and red mud in terms of mechanical and different-mode fracture properties. According to the results, all AAS concrete mixes made with mineral admixtures (except 70% fly ash) exhibited mechanical strength comparable to that of the OPC concrete, and results of the fracture toughness in pure mode I (tensile opening), mode II (shear in-plane), and results of the fracture toughness in pure mode I (tensile opening), mode II (shear in-plane) and mode III (shear out-plane) showed that the trend of tensile and shear performance of concrete mixes are nearly similar. Based on the results of pull-off adhesion test and image processing, the high paste strength in different AAS concrete mixes caused a better aggregates-paste bonding strength.

环境因素已导致碱活化矿渣 (AAS) 水泥成为普通波特兰水泥 (OPC) 的有希望的可持续替代品。本研究旨在对不同类型的部分替代粘合剂（包括粉煤灰、硅灰和赤泥）的 AAS 混凝土在力学和不同模式断裂性能方面进行的一些综合实验研究的结果。根据结果​​，所有用矿物外加剂（70% 粉煤灰除外）制成的 AAS 混凝土混合料都表现出与 OPC 混凝土相当的机械强度，以及纯模式 I（拉伸开孔）、模式 II（剪切平面内），以及纯模式 I（拉伸开度）下的断裂韧性结果，模式 II（平面内剪切）和模式 III（平面外剪切）表明混凝土混合料的拉伸和剪切性能趋势几乎相似。根据拉断附着力测试和图像处理结果，不同 AAS 混凝土混合料中的高浆体强度导致了更好的骨料-浆体粘结强度。