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研制了一种纯丙乳液防水修补砂浆。根据工程需要,试验研究了该修补砂浆的强度、耐久性、干缩率以及在加固修补工程中的应用效果。测试结果表明,纯丙乳液防水修补砂浆的性能指标符合JG/T336-2011《混凝土结构修复用聚合物水泥砂浆》B型产品要求,与相同条件下的普通水泥砂浆相比,其抗压强度降低24%,抗拉强度提高28%,拉伸粘结强度提高268%,干缩率降低50%以上,同时抗冻性、耐碱性、抗渗性均有显著提高。该修补砂浆可用于有抗渗、抗裂、抗冻等特殊要求的加固修补工程。
Developed a pure acrylic emulsion waterproof repair mortar. According to the needs of the project, the strength, durability, shrinkage rate and application effect of the repaired mortar are studied experimentally. The test results show that the performance of pure acrylic emulsion waterproof mortar meets the requirements of JG / T336-2011 “B-type polymer cement mortar for concrete structure repair” requirements, compared with ordinary cement mortar under the same conditions, the compressive strength decreased 24%, tensile strength increased by 28%, tensile bond strength increased by 268%, shrinkage decreased by 50%, while frost resistance, alkali resistance, impermeability were significantly improved. The repair mortar can be used for impermeability, cracking, frost and other special requirements of the reinforcement repair project.