現(xiàn)澆樓板哪些裂縫不能用碳纖維（樓板加固碳纖維板）

可以用鋼進(jìn)行加固，利用鋼材料和樓板組合成一個整體，達(dá)到加固樓板效果；還可以用碳纖維布覆蓋在樓板下方，將樓板和大梁粘接在一起，將重量傳遞到大梁上。

本文目錄

1、現(xiàn)澆樓板哪些裂縫不能用碳纖維
2、樓頂加固承重方法
3、碳纖維布加固樓板上方還是下方
5、頂板裂縫碳纖維的處理方法
6、開發(fā)商利用碳纖維加固樓板。時過三年，各房間頂板出現(xiàn)了大量空鼓，開裂，掉皮。這種情況還能維修嗎

1、現(xiàn)澆樓板哪些裂縫不能用碳纖維

以下是現(xiàn)澆樓板裂縫不能用碳纖維1、混凝土中水泥的穩(wěn)定性不合格，或者水泥品種不同，造成化學(xué)循環(huán)，導(dǎo)致現(xiàn)澆板開裂，不能用碳纖維加固，只能完全拆除再澆筑。2、對于普通混凝土樓板表面的裂縫，可清洗裂縫，烘干后可將環(huán)氧樹脂行業(yè)的細(xì)表面刷凈封閉，如在進(jìn)一步施工過程中發(fā)現(xiàn)裂縫，可再刷處理。3.對于其他一般的現(xiàn)澆板裂縫，你可以用1：1的水泥砂漿擦拭裂縫，然后把它們壓平并保持，直到原來的外觀恢復(fù)。4.當(dāng)樓板出現(xiàn)大面積裂縫時，應(yīng)立即進(jìn)行樓板靜載試驗，以測試樓板的結(jié)構(gòu)安全。如有需要，應(yīng)在樓板上加設(shè)一層鋼網(wǎng)，以提高樓板的完整性?；蛑谱鞣浪畬印?img alt="現(xiàn)澆樓板哪些裂縫不能用碳纖維（樓板加固碳纖維板）鋼結(jié)構(gòu)網(wǎng)架設(shè)計" title="現(xiàn)澆樓板哪些裂縫不能用碳纖維（樓板加固碳纖維板）鋼結(jié)構(gòu)網(wǎng)架設(shè)計" 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/>

2、樓頂加固承重方法

可以用鋼進(jìn)行加固，利用鋼材料和樓板組合成一個整體，達(dá)到加固樓板效果；還可以用碳纖維布覆蓋在樓板下方，將樓板和大梁粘接在一起，將重量傳遞到大梁上。具體加固做法如下：　　1、粘鋼加固　　把鋼框架與樓板鉚成一個整體，鋼框架跨接在橫梁上，將作用于樓板上的重量通過鋼框架，直接傳遞到大梁上，以此提高樓板承重的辦法?！　?、碳纖維加固　　把碳纖維布均勻地粘貼在樓板底部與樓板和大梁粘接為一個整體，將作用于樓板承受的重量通過碳纖維的拉伸，傳遞到大梁上，以此提高樓板承重的方法。

3、碳纖維布加固樓板上方還是下方

樓板下方；將混凝土表面不平整的地方進(jìn)行找平和填補(bǔ)，轉(zhuǎn)角處應(yīng)保證光滑、圓弧，轉(zhuǎn)角的半徑不得小于30mm。根據(jù)尺寸裁剪碳纖維布，將面膠均勻的涂抹在需要粘貼的地方，確保需要粘貼位置平整之后撕去離型紙，用專用的滾子反復(fù)滾壓，去除表面的氣泡，反復(fù)進(jìn)行多層的粘貼，最后使用粘鋼固定即可。

4、樓頂?shù)臉前逶鯓蛹庸?/h3>
1、增大截面加固法是于板面或者板底增做不小于40毫米厚度的鋼筋混凝土后澆層，而且為了方便施工一般多采用板面澆筑以形成剛性樓蓋以及屋蓋。如果過程中必須采用板底澆筑疊合層，那么需對板底進(jìn)行鑿毛處理搭配常用的噴射法工藝。加固處理時最好采用熱軋鋼筋，板的受力鋼筋直徑不少于8mm。2、粘貼碳纖維布加固板是通過結(jié)構(gòu)膠將碳纖維布順著板跨方向粘貼于板底受拉部位，并在其端部須有可靠錨固。其優(yōu)點是碳纖維布具有質(zhì)輕高強(qiáng)，可多層粘貼，加固后基本不增加原構(gòu)件的重量，且不影響結(jié)構(gòu)外形，不僅僅能提高結(jié)構(gòu)承載力還可以增強(qiáng)結(jié)構(gòu)的剛度。3、粘貼鋼板法加固受彎構(gòu)件板，除應(yīng)符合正截面承載力的基本假定外，尚應(yīng)符合下列規(guī)定：當(dāng)考慮二次受力影響時，應(yīng)按構(gòu)件加固的受力初始情況，確定鋼板的滯后應(yīng)變。在達(dá)到受彎承載能力極限狀態(tài)前，外粘鋼板均不能與混凝土之間出現(xiàn)粘結(jié)剝離破壞。鋼筋混凝土結(jié)構(gòu)構(gòu)件被加固后，其正截面受彎承載力的提高幅度，不應(yīng)超過40%，并應(yīng)驗算其受剪承載力，避免受彎承載力提高后而導(dǎo)致構(gòu)件受剪破壞先于受彎破壞。

5、頂板裂縫碳纖維的處理方法

樓板裂縫，不管是貫通還是未貫通的裂縫，在進(jìn)行灌漿后，都需粘貼纖維布，從而讓其達(dá)到加固的目的。而碳纖維加固，需先做好防護(hù)措施，再將基層清理干凈，接著將混凝土表面的鋼筋銹蝕區(qū)處理好，便可粘貼鋼板網(wǎng)。一、樓板裂縫灌漿需注意1、在進(jìn)行樓板裂縫施工之前，需要對抹灰層進(jìn)行剔除工作，讓其能夠露出整個結(jié)構(gòu)層，以便后期的施工，同時，還能減少不必要的麻煩出現(xiàn)。2、施工前，還需要確保樓板不會過于潮濕，必須讓縫隙處于干燥的狀態(tài)。且千萬不要用水去沖洗裂縫，不但容易造成漏水，而且會加大施工難度，效果降低。3、設(shè)置灌漿的注入口時，盡量選擇寬度比較大的區(qū)域，且開口的位置一定要是通暢的，從而降低灌漿的難度，確保施工的正常進(jìn)行。4、若是使用的膠，是屬于底壓式的灌漿封口膠，那么需要在施工現(xiàn)場中，臨時進(jìn)行配制，而且每一次配的量是不能太多，必須用完之后，再進(jìn)行配制。5、再進(jìn)行仰面注膠的過程中，是要佩戴好必要的保護(hù)工具的，如防護(hù)鏡，以免對眼睛造成傷害。且灌漿完成后，需使用酒精對灌漿器進(jìn)行清潔，以便后期的使用。