Process optimization of breathable polymer mortar in wall hollow drum repair
透气性聚合物砂浆在墙面空鼓修复中的工艺优化

摘要

古建筑常出现墙面空鼓这类病害，采用传统修复方式，墙体易遭受不可逆的破坏，以微创特性为依仗，钻孔注浆修复技术，作为古建筑墙面修复的首选方案，把透气性聚合物砂浆当作注浆材料，既具备良好透气性能，又有粘结强度，可切实改良墙体内部的水汽循环，防止修复后出现返潮、开裂等故障。采用优化注浆设备、压力控制、浆液配比等工艺环节的做法，采用梯度注浆、动态压力调整等办法，能让砂浆更均匀地弥漫至空鼓区域，增强修复效果与持久度，实际工程应用的实例表明，优化后的工艺可大幅强化修复成效，在古建筑墙面空鼓修复上具有关键推广价值。

Abstract

Ancient buildings often suffer from wall hollow drumming. Traditional restoration methods can cause irreversible damage to the walls. Drilling and grouting technology, which relies on its minimally invasive nature, is the preferred solution for repairing ancient building walls. This method uses breathable polymer mortar as the grouting material, which not only has excellent permeability but also strong bonding strength. It effectively improves the water vapor circulation inside the walls, preventing issues like dampness and cracking after restoration. By optimizing grouting equipment, pressure control, and slurry mixing ratios, and employing techniques such as gradient grouting and dynamic pressure adjustment, the mortar can be more evenly distributed in the hollow areas, enhancing both the effectiveness and longevity of the restoration. Practical engineering applications have shown that the optimized process significantly enhances the restoration results, making it a key technology with significant promotion value in the repair of hollow drumming in ancient building walls.