桶裝植筋膠的使用方法
1、定位
按照(zhao)設計(ji)要求利(li)用鋼筋探(tan)測儀(避開鋼筋)準確確定(ding)鉆孔的位(wei)置。
2、鉆孔
使用電(dian)動(dong)沖擊鉆(zhan)在確定位置按(an)(an)設計(ji)要(yao)求(qiu)(深度、孔(kong)(kong)(kong)徑(jing)(jing))鉆(zhan)孔(kong)(kong)(kong),為保證(zheng)充(chong)分發揮被(bei)錨固(gu)鋼筋(jin)(jin)(jin)(jin)的作用,鋼筋(jin)(jin)(jin)(jin)的埋(mai)設及孔(kong)(kong)(kong)徑(jing)(jing)應嚴格(ge)按(an)(an)照設計(ji)要(yao)求(qiu),鉆(zhan)孔(kong)(kong)(kong)時不得破壞(huai)原混凝(ning)土構(gou)件的結構(gou),不得切損(sun)構(gou)件原有主筋(jin)(jin)(jin)(jin)和其他受力鋼筋(jin)(jin)(jin)(jin)。成孔(kong)(kong)(kong)后的孔(kong)(kong)(kong)壁必須完整(zheng)無(wu)損(sun),無(wu)裂縫(feng)、蜂窩、孔(kong)(kong)(kong)道(dao)。(如果(guo)孔(kong)(kong)(kong)眼(yan)與(yu)構(gou)件鋼筋(jin)(jin)(jin)(jin)位置不相重合,按(an)(an)設計(ji)圖布(bu)置膨脹螺栓用孔(kong)(kong)(kong)眼(yan);如果(guo)孔(kong)(kong)(kong)眼(yan)與(yu)構(gou)件鋼筋(jin)(jin)(jin)(jin)位置相重合時,為保證(zheng)不傷(shang)原有構(gou)件鋼筋(jin)(jin)(jin)(jin),將孔(kong)(kong)(kong)眼(yan)作適當的調整(zheng),并將調整(zheng)后孔(kong)(kong)(kong)眼(yan)布(bu)置畫成草圖或做好記錄)。
3、清孔
成孔后(hou)(hou)應立即清(qing)理,使(shi)用毛刷清(qing)除孔壁(bi)的灰粉不得(de)少于3次,吹(chui)出粉塵(chen),孔內應完(wan)全干燥,使(shi)用棉紗(sha)蘸取丙酮(tong)擦(ca)拭孔壁(bi)一遍。清(qing)孔后(hou)(hou)若不能(neng)及(ji)時植筋,必須臨時封堵(du)孔口,防止塵(chen)土、砂礫等(deng)進入孔內。
4、鋼筋去污
采用機械方法或者(zhe)鋼絲刷除去鋼筋植入(ru)部分(fen)表(biao)面鐵銹(xiu)和氧化層,然后使用丙酮(tong)除去鋼筋上(shang)殘留的油(you)污。已經(jing)處理過的鋼筋應該盡快植入(ru)孔(kong)內(nei),避免重新生銹(xiu)或粘上(shang)油(you)污。
5、配膠
按需用膠(jiao)量取(qu)桶裝植筋膠(jiao)的(de)A、B料(依(yi)照使用說明(ming)分別(bie)量取(qu)),并快速混合均勻。
6、注膠
膠(jiao)液(ye)應盡快(kuai)低(di)壓注入到孔(kong)中,排出氣泡,保證膠(jiao)層飽滿。
7、植筋
插入鋼筋(jin)用固定(ding)卡(ka)在(zai)孔(kong)(kong)(kong)兩(liang)端將鋼筋(jin)固定(ding)(因橫(heng)梁(liang)植筋(jin)孔(kong)(kong)(kong)為通(tong)(tong)(tong)孔(kong)(kong)(kong),所以要保(bao)證鋼筋(jin)的位置固定(ding)),在(zai)固定(ding)卡(ka)預(yu)留(liu)注膠孔(kong)(kong)(kong)和通(tong)(tong)(tong)氣(qi)(qi)孔(kong)(kong)(kong)(注膠孔(kong)(kong)(kong)設于固定(ding)卡(ka)下方(fang),可任取(qu)一端;通(tong)(tong)(tong)氣(qi)(qi)孔(kong)(kong)(kong)設于橫(heng)梁(liang)兩(liang)端固定(ding)卡(ka)上(shang)方(fang)并加設20cm向(xiang)上(shang)通(tong)(tong)(tong)氣(qi)(qi)管(guan);通(tong)(tong)(tong)氣(qi)(qi)管(guan)管(guan)徑要小且緊貼植筋(jin)孔(kong)(kong)(kong)截面(mian)頂點,在(zai)植筋(jin)孔(kong)(kong)(kong)截面(mian)頂點鑿一小缺(que)口安(an)設通(tong)(tong)(tong)氣(qi)(qi)管(guan)),用快硬(ying)型環氧樹脂封塞孔(kong)(kong)(kong)端(保(bao)證注膠孔(kong)(kong)(kong)和通(tong)(tong)(tong)氣(qi)(qi)孔(kong)(kong)(kong)暢(chang)通(tong)(tong)(tong))。
8、養護固化
已經(jing)植入(ru)孔內的鋼筋應(ying)在常(chang)溫下養護(hu),不(bu)得擾動,24小(xiao)時(shi)后(hou)(hou)可以(yi)進(jin)行下步(bu)施工(gong)作業(掛鋼板(ban)粘貼)。一(yi)般20℃時(shi)粘合劑在3-5天可以(yi)完全固化(hua),現場抽樣檢驗應(ying)該在五天以(yi)后(hou)(hou)進(jin)行。
注射式植筋膠使用方法
1、標定空位
由設計(ji)單位設計(ji),劃線(xian)確定定位植筋,看看我們的工程哪(na)些(xie)地方需要植筋加固。
2、鉆孔
嚴(yan)格(ge)按(an)照(zhao)技(ji)術(shu)參(can)數鉆(zhan)孔,我們必須(xu)按(an)照(zhao),且嚴(yan)格(ge)按(an)照(zhao)技(ji)術(shu)規(gui)定(ding)植(zhi)筋(jin)鉆(zhan)孔,如果不按(an)照(zhao)規(gui)定(ding)參(can)數,直接影響(xiang)(xiang)植(zhi)筋(jin)的拉拔效果,最終影響(xiang)(xiang)植(zhi)筋(jin)效果。
3、清空孔內浮灰
吹(chui)(chui)盡孔(kong)內浮(fu)灰(hui)(hui),毛刷刷干凈,反復刷、推,直(zhi)到把孔(kong)清干凈,我們一(yi)定(ding)遵循原則“三(san)吹(chui)(chui)三(san)推”,顧名思義,就是用(yong)壓(ya)縮空氣吹(chui)(chui)盡孔(kong)內浮(fu)灰(hui)(hui),再(zai)(zai)用(yong)毛刷刷和推,再(zai)(zai)一(yi)次吹(chui)(chui),然后推,反復進行這一(yi)步(bu),直(zhi)到孔(kong)內的浮(fu)灰(hui)(hui)干凈即可。
4、注膠前準備
在(zai)植筋(jin)膠(jiao)(jiao)(jiao)膠(jiao)(jiao)(jiao)瓶上裝好靜態混合器,用膠(jiao)(jiao)(jiao)槍(qiang)先(xian)少量(liang)的擠掉(diao)(diao)前面混合不均勻的膠(jiao)(jiao)(jiao),然后在(zai)孔內注膠(jiao)(jiao)(jiao)。把前面不均勻的膠(jiao)(jiao)(jiao)擠掉(diao)(diao),不均勻會達不到(dao)效果,所以要擠掉(diao)(diao)。
5、注膠方法
保證(zheng)從孔底(di)至孔口的(de)順序,盡量不(bu)要混入(ru)(ru)氣泡(pao),膠料(liao)(liao)應注滿孔深的(de)2/3以(yi)上(shang)。根據(ju)我們(men)十年加固(gu)材料(liao)(liao)經驗,注入(ru)(ru)三分之二(er)即可達到(dao)最好的(de)植筋(jin)效果(guo)。
6、旋入鋼筋或螺桿
將鋼筋或(huo)螺桿旋入孔中,并上(shang)(shang)下抽動(dong)(dong)幾次,以(yi)保證粘膠的(de)均勻,不停(ting)的(de)抽動(dong)(dong),增加受力面積(ji),最(zui)大范圍使膠料粘接在(zai)鋼筋或(huo)者螺桿上(shang)(shang)。
7、固化養護
在常溫下養護時(shi)間(jian)為24小(xiao)時(shi),期間(jian)不(bu)能(neng)搖動(dong)桿體,養護后即可承(cheng)重(zhong)。