注浆of注浆防水的概念of防水又称为法

作者：防水补漏-广东永固建设有限公司发布时间：2022-12-25 21:04:22 点击：

密封前布设灌浆管，沿裂缝布设灌浆管，间距不小于混凝土厚度。

(3) 关闭裂缝

为保证注浆质量，裂缝外必须形成封闭体，因此裂缝表面应封闭。应在环氧树脂灌浆缝隙一侧进行面封。如果裂缝被穿透，另一侧的裂缝表面也必须密封。涂膜用环氧树脂浆料和玻璃网布密封。贴布前应将混凝土气泡或凹凸处填平，然后用棕色刷子蘸稀环氧树脂浆液刷涂在混凝土表面。，停留5-10分钟后，将玻璃布粘在接缝处，然后再在布上刷上稀释的环氧树脂浆料。贴布时要防止空鼓、起皱、不服贴。玻璃布的宽度一般为4-6cm，裂缝必须位于布的中央。如果必须搭接玻璃布，接缝长度不应小于2cm。密封的严密性是注浆成功与否的关键。如果密封不严密，一旦在施工过程中出现漏浆现象，不仅需要停工临时堵漏浪费时间，而且再次灌浆时也容易形成局部缺陷。果肉会影响效果。

(4) 气体测试

玻璃布贴好后2-3天就可以试气了。方法是在封层上刷肥皂水，用气泵通过注浆嘴向裂缝内注入空气。如果漏气，肥皂水会起泡沫。、漏水处必须重新用腻子修补，试气压力一般在0.3MPa表压以下，注浆时应作详细记录以供分析判断。空气试验的目的主要有3个：检查密封层是否漏气，用压缩空气吹掉残留在缝隙中的灰尘；检查裂缝的渗透情况，确保灌浆顺利完成。

2.2 灌浆施工技术

根据试气记录，确定裂缝内部形状特征，制定注入方案。灌浆一般应遵循由下向上或由一端向另一端渐进的原则，以免空气混入浆液中明城防水补漏，影响浆液的密实度。灌浆压力取决于裂缝的宽度和深度，以及灌浆的粘度。对于较厚的接头，应使用较小的压力，可根据具体情况灵活调整。面封系统需要一定的养护时间，必须在灌浆前达到足够的强度。注浆法有单液和双液两种。单液注浆通常采用气压注浆法，双液注浆通常采用两台计量齿轮泵分别加压混合A、B组份后压入裂缝。单液灌浆时，先将浆液倒入料罐中，拧紧罐体密封盖，然后通风增压，使浆液通过与注浆嘴相连的塞子进入缝隙。一旦相邻注浆嘴冒出浆液，立即停止注浆，取下塞子，用木塞堵住注浆嘴，然后将注浆口换成注浆口，同法继续加压注浆，直到整个裂缝都充满了泥浆。竖缝上端常因灌浆缝收缩而未满，可采用二次灌浆来弥补。 During the process, in case of a grout leakage, the quick-setting should be used to stop the 堵漏 and stop the grout .

2.3 work

When the cracks are filled and the has been cured for enough time to confirm that it will not from the cracks, it is now the stage. The main work of the stage the and sealing on the surface, and the cracks. The surface is , the exposed nozzle is cut, the pit is , the field test is , the filling of the core hole is , etc.

3. Key points of quality

Shallow cracks should be buried with nozzles, and if , "V" grooves should be dug along the cracks and sealed with cement mortar; deep cracks should be drilled through cracks or drilled to the deep part of the crack, and pipes should be buried in the holes, and the spacing should be to It depends on the width of the crack, but each crack has at least one hole and one venting hole; the nozzle and the pipe should be set at the , wide part and of the crack; use low and low speed , the should be 0.2-0.4MPa, and the cement should be 0.4-0.8MPa; after , when the grout in the joint is set and does not flow out, the nozzle can be removed and sealed and ; The and mix ratio, the hole and hole of the drilled buried pipe, the control and the amount of must meet the of the design ; the sealing effect of the sealing joints shall be , and the method shall be 10% of the number of cracks. , each crack is 1, and not less than 3.

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