预应力孔道压浆料

预应力孔道压浆料（简称：公路孔道压浆料）是以优质水泥与多种有机和无机材料复合而成的压浆材料。在施工现场按一定比例加水，并搅拌均匀后，用于后张预应力孔道压浆。产品浆体密实，保护预应力筋不受腐蚀；粘结牢固，保证预应力筋与混凝土之间的粘结力，使预应力有效传递。

广泛适用于后张法预应力桥梁孔道的压浆施工，帷幕灌浆、锚固灌浆、空隙、空洞填补修复等领域。执行标准《JTG/TF50－2011》

一、产品优点

• 低水胶比：水胶比仅为0.26～0.28；
• 高流动性：浆体的出机初始流动度可达10S，60min后流动度仍保持在25S以内；
• 高稳定性：浆体24h自由泌水率和3h钢丝间泌水率均为0；
• 高抗分离性:产品满足欧洲标准ETAG013要求，仿真试验5m管零泌水、无缺陷；
• 绝湿微膨胀：浆体在预应力孔道内绝湿条件下仍能产生膨胀，补偿浆体收缩，提高了硬化浆体体积稳定性，保证压浆质量；
• 早强高强：3d抗压强度≥20MPa，28d抗压强度≥50MPa；
• 高耐久性：28d电通量≤1000C,28d抗冻等级≥F500。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

二、产品性能

产品主要技术参数