Unreinforced masonry buildings in the historic centers of the world have often been overlooked for centuries without any protection. These buildings demonstrate low resistance under external effects, especially against earthquakes. Earthquakes cause serious damage to the buildings and even the collapse of structures as a result of seismic stimulation from the impact of pounding with structural impacts. For this reason, it is of great importance to repair and strengthen damaged masonry structures. This study investigated the testing of masonry wall specimens produced from different kinds of masonry units with various types of mortar. Then, geopolymer grouts with high mechanical properties were produced by using alkali activation and industrial products. The experimental performance of strengthened masonry wall samples was determined using the optimum geopolymer grout in vertical compression tests. The behavior, failure mode, and crack pattern of the masonry wall samples were determined under loading systems. Experimental results demonstrate that the use of additive styrene-butadiene (SB) latex geopolymer grouts on damaged walls increased the load-carrying capacity and ductility significantly compared to the corresponding values of samples before initial failure. All of the strengthened walls failed through the de-bonding failure mode, and no visible damage was observed on the samples. Consequently, geopolymer grouts displayed many advantages over conventional repair materials due to their high viscosity, compressive strength, eco-friendliness, and excellent resistance.

几个世纪以来，在世界任何历史中心，未经加固的砖石建筑都经常被忽视，没有任何保护措施。这些建筑物在外界影响下表现出较低的抵抗力，尤其是抗地震能力。地震会因建筑物撞击的冲击而产生地震刺激，从而对建筑物造成严重破坏，甚至使建筑物倒塌。因此，修复和加强受损的砖石结构非常重要。这项研究调查了用不同类型的砂浆从不同类型的砌体单元生产的砌体墙标本的测试。然后，通过使用碱活化剂和工业产品生产具有高机械性能的地质聚合物灌浆。在垂直压缩试验中，使用最佳的地质聚合物灌浆确定了砌体墙样品的实验性能。在加载系统下确定了砌体墙样品的行为，破坏模式和裂缝模式。实验结果表明，与初始破坏前的相应样品值相比，在受损壁上使用添加剂苯乙烯-丁二烯（SB）乳胶地质聚合物灌浆显着提高了承载能力和延展性。所有加固的墙都通过脱粘破坏模式破坏，并且在样品上未观察到可见的损坏。因此，地质聚合物灌浆由于其高粘度，抗压强度，生态友好性和出色的抵抗力而显示出优于常规修补材料的许多优点。