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预制或现场浇注的楼梯和其它混凝土构件受损后,可在不影响其使用的情况下,用一种速凝维修砂浆修补。这种材料由 Ardex(英国)有限公司生产,适用于楼梯口地面、阶梯、墙体和楼板的维修。修补时间约10～15分钟,然后经过1.5小时硬化就可以在混凝土上面行走。此外,另一种速凝快硬材料可用于修补、整平混凝土楼板和作抹面材料,不同于普通水泥的硬化过程。约2～3小时后,可在新修补层上行走;约5～6小时后,稳定性符合英国建筑研究站规定的要求;24小时后,
Damage to prefabricated or cast-in-place stairs and other concrete components can be repaired with a quick-setting maintenance mortar without affecting its use. This material is manufactured by Ardex (UK) Ltd. and is suitable for the maintenance of stairway floors, ladders, walls and floors. The repair time is about 10 to 15 minutes, and then it can be cured on the concrete after 1.5 hours of hardening. In addition, another quick-setting quick-hardening material can be used for repairing and leveling the concrete floor slabs and the surface finishing materials, unlike the hardening process of ordinary cement. About 2 to 3 hours later, it is possible to walk on the new patch; about 5 to 6 hours later, the stability meets the requirements set by the British Building Research Station; after 24 hours,