Geopolymers (inorganic polymers) were developed and patented by Joseph Davidovits in the 1970’s and have gained significant attention in the civil construction industry. Since then, the properties of geopolymers have been studied by many researchers, such as their use as a repair material on reinforced concrete structures. Thus, this study aimed to evaluate the mechanical properties of metakaolin-based repair geopolymeric resins. The geopolymeric resins were prepared with alkaline activators composed by sodium and potassium silicates combined to sodium and potassium hydroxides to determine the properties of fresh mixtures (workability, setting times), the adhesion coefficient at the interface substrate/resin and the gain in compressive and indirect tensile strengths up to 28 days of age. The Iosipescu or V-Notch shear tests were used to determine the shear strength and shear modulus, according to ASTM D 5379 (1998) specifications, as these are the most important mechanical properties when studying structural repairs. The results indicated that all geopolymeric resins achieved high mechanical strength in the early ages, which is fundamental for structural repair applications. The gain in compressive strength ranged from 60% on the first day to 85 to 93% after 3 days when compared to the results obtained at 28 days of age. All resins reached compressive strengths greater than 80 MPa and indirect tensile strengths between 5 and 6 MPa at 28 days of age. The shear strength (τ) values were around varied from 4.31 to 7.55 MPa. The resins with combination of sodium silicate with potassium hydroxide and potassium silicate with sodium hydroxide showed higher shear moduli, being respectively 6,13 and 8,20 GPa. The results obtained show that the resins developed in this work have enormous potential for use in repairing reinforced concrete structures.

地质聚合物（无机聚合物）是由约瑟夫·戴维多维兹（Joseph Davidovits）在1970年代开发并获得专利的，并在民用建筑行业中引起了广泛的关注。从那时起，许多研究人员对地聚合物的性能进行了研究，例如将其用作钢筋混凝土结构的修补材料。因此，本研究旨在评估偏高岭土基修复地聚合物树脂的机械性能。用碱性活化剂制备地聚合物树脂，该活化剂由硅酸钠和硅酸钾与氢氧化钠和氢氧化钾组成，以确定新鲜混合物的性能（可加工性，凝固时间），界面基材/树脂的粘合系数以及压缩和间接获得的增益高达28天的抗拉强度。根据ASTM D 5379（1998）规范，使用Iosipescu或V-Notch剪切试验来确定剪切强度和剪切模量，因为这些是研究结构修复时最重要的机械性能。结果表明，所有地聚树脂在早期都获得了很高的机械强度，这对于结构修复应用至关重要。与28天龄时的结果相比，抗压强度的增加从第一天的60％到3天后的85至93％不等。28天时，所有树脂的抗压强度均大于80 MPa，间接拉伸强度在5至6 MPa之间。剪切强度（τ）值在4.31到7.55 MPa之间变化。硅酸钠与氢氧化钾和硅酸钾与氢氧化钠结合的树脂表现出较高的剪切模量，分别为6.13和8.20 GPa。获得的结果表明，在这项工作中开发的树脂在修补钢筋混凝土结构中具有巨大的潜力。