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高強聚合物砂漿
高強聚合物砂漿
產品特點
1、混凝土結構中破損的構件、梁、板、柱、樓梯等部位的修補；
2、建（構）筑物使用高強不銹鋼絞線網的抹灰找平保護砂漿；
3、道路、橋梁中混凝土破損部位的修補；
4、機場跑道、高速公路車道及 到破損部位的修補及搶修；
5、工業廠房混凝土地坪破損部位的修補及搶修。
產品用途
該產品主要適用于混凝土結構的空洞、蜂窩、破損、剝落、露筋等表面損傷部分的修復，以回復混凝土結構良好的使用性能。也可作為碳纖維加固找平砂漿、高性能砌筑砂漿以及建（構）筑物適用鋼絞線加固的抹灰找平保護砂漿。該產品因加有多種高分子聚合物改性劑、膠粉及抗裂纖維。因此具有良好的施工和易性、粘接性、抗滲性、抗剝落性、抗凍融性、抗碳化性、抗裂性、鋼筋阻銹性能并具有高強度等性能。
性能指標
|
砂漿等級 |
Ⅰ級 |
Ⅱ級 |
RJ-55聚物砂漿 |
試驗方標準 |
|
正拉粘結強度（MPa） |
≥2.5且為混凝土內聚破壞 |
2.5 |
（GB50367-2006）規范附錄F |
|
|
抗折強度（MPa） |
≥12 |
≥10 |
12.5 |
（GB50367-2006）規范附錄H |
|
抗壓強度（MPa） |
≥55 |
≥45 |
56.9 |
JGJ70 |
|
鋼套筒粘結抗剪強度標準（MPa） |
≥12 |
≥9 |
12.2 |
（GB50367-2006）規范附錄J |
施工步驟
1、基層要求及處理：基層表面應平整、粗糙、清潔、無油污，無浮灰，不應有起砂、空鼓、裂縫等現象。施工前應用高壓水沖洗并保持潮濕狀態，但不得有積水。界面粘結時，可預先涂刷界面處理劑。（界面劑使用方法見說明）
2、材料配制：將粉料：水按質量比100：14-16稱取放置。將實際用量90％的水倒入粉料中攪拌均勻，再將剩余的10％水逐漸倒入并攪拌無結塊，配好的漿料應保證在30分鐘內用完。
3、施工：混凝土基層表面先將水和界面劑1：1稀釋均勻攪拌，刷在混凝土上，待干了之后，再刷一層界面劑（不稀釋）均勻涂刷一遍，界面劑聚合物修補砂漿一次施工面積不宜過大，應分條分塊錯開施工，每塊面積不宜大于10平米，錯開施工的間隔不應小于12小時。分層施工時，留縫位置應互相錯開。
4、聚合物修補砂漿攤鋪完畢后應立即壓抹并一次抹平，不宜反復抹壓。遇有氣泡時應刺破壓緊，表面應密實。立面或頂面的面層厚度大于2.5公分時應分層施工。每層抹面厚度宜為1公分左右,待前一層指觸于時方可進行下層施工。
初期養護
施工體表面初凝后可灑水養護，水平地面還應覆蓋潮濕麻袋片等在5—40℃環境下養護至少7天。
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