JGN型耐高温建筑结构胶抗震加固性能研究

为有效增强建筑结构的抗震性能、提高建筑抗震水平，对JGN型耐高温建筑结构胶抗震加固性能展开研究。将高活性酚醛胺(T－31)作为主固化剂、聚酰胺树脂(PA)为辅助固化剂，结合气相白炭黑、超细石英砂、石棉纤维、纳米材料、环氧树脂等材料，制备JGN型耐高温建筑结构胶。在高温环境下，使用万能试验机分析不同配比条件对结构胶抗震加固性能的影响。测试主要以拉伸强度、压缩强度以及压缩弹性模量为指标。测试结果表明：当固化剂质量比为45∶15、气相白炭黑掺量为4.5%、超细石英砂掺量为10%、石棉纤维掺量为10.5%、纳米SiO₂掺量为3.5%、纳米CaCO₃掺量为2.5%时，JGN型耐高温建筑结构胶的拉伸强度和压缩强度更大，压缩弹性模量得到优化，结构胶的抗震加固性能达到最佳状态。

Seismic strengthening performance of JGN-type building structural adhesive with high temperature resistance

To effectively enhance the seismic performance and seismic levels of building structures, the seismic reinforcement performance of JGN-type building structural adhesive with high temperature resistance was studied in this paper. A JGN-type building structural adhesive with high temperature resistance was prepared by using highly active phenolic amine (T-31) as the main curing agent and polyamide resin as the auxiliary curing agent, combined with gas phase silica black, ultrafine quartz sand, asbestos fiber, nanomaterial, and epoxy resin. The effect of different proportions on the seismic performance of JGN-type structural adhesive under high temperature environment was analyzed by using a universal testing machine. The tensile strength, compressive strength, and compressive elastic modulus were taken as the tested indexes. Test results show the following: When the mass ratio of the curing agent is 45: 15, the content of fumed silica is 4.5%, ultrafine quartz sand is 10%, asbestos fiber is 10.5%, nano-SiO₂ is 3.5%, nano-CaCO₃ is 2.5%, the tensile strength and compressive strength of JGN-type high temperature-resistant building structural adhesive will be higher, and the compressive elastic modulus can be optimized. With this proportion, the best seismic strengthening performance of the structural adhesive is achieved.