一、植筋膠如何使用
桶裝植筋膠(jiao)使用(yong)步驟:
1、定位
按照設(she)計(ji)要求(qiu)利用鋼(gang)筋探(tan)測(ce)儀(避開鋼(gang)筋)準確確定鉆孔(kong)的位置(zhi)。
2、鉆孔
使用(yong)電(dian)動沖擊鉆在確定位(wei)置(zhi)按(an)設(she)計(ji)(ji)要求(深度、孔(kong)(kong)(kong)(kong)徑)鉆孔(kong)(kong)(kong)(kong),為保(bao)證充分發(fa)揮被錨固鋼(gang)(gang)(gang)筋的(de)作用(yong),鋼(gang)(gang)(gang)筋的(de)埋設(she)及孔(kong)(kong)(kong)(kong)徑應嚴格按(an)照設(she)計(ji)(ji)要求,鉆孔(kong)(kong)(kong)(kong)時不(bu)(bu)得破壞原混凝(ning)土構(gou)(gou)(gou)件的(de)結構(gou)(gou)(gou),不(bu)(bu)得切損(sun)構(gou)(gou)(gou)件原有主筋和其他(ta)受力鋼(gang)(gang)(gang)筋。成孔(kong)(kong)(kong)(kong)后的(de)孔(kong)(kong)(kong)(kong)壁必須完整(zheng)無損(sun),無裂縫、蜂窩、孔(kong)(kong)(kong)(kong)道。(如果孔(kong)(kong)(kong)(kong)眼(yan)與構(gou)(gou)(gou)件鋼(gang)(gang)(gang)筋位(wei)置(zhi)不(bu)(bu)相(xiang)重合(he),按(an)設(she)計(ji)(ji)圖(tu)布置(zhi)膨脹螺栓用(yong)孔(kong)(kong)(kong)(kong)眼(yan);如果孔(kong)(kong)(kong)(kong)眼(yan)與構(gou)(gou)(gou)件鋼(gang)(gang)(gang)筋位(wei)置(zhi)相(xiang)重合(he)時,為保(bao)證不(bu)(bu)傷(shang)原有構(gou)(gou)(gou)件鋼(gang)(gang)(gang)筋,將孔(kong)(kong)(kong)(kong)眼(yan)作適當的(de)調(diao)整(zheng),并將調(diao)整(zheng)后孔(kong)(kong)(kong)(kong)眼(yan)布置(zhi)畫成草圖(tu)或做好(hao)記錄)。
3、清孔
成孔后應立即清理,使(shi)用毛刷清除(chu)孔壁的灰粉不(bu)得少于3次,吹(chui)出(chu)粉塵,孔內(nei)(nei)應完(wan)全干(gan)燥,使(shi)用棉紗(sha)蘸取丙酮擦拭孔壁一遍。清孔后若不(bu)能(neng)及時植筋,必須臨時封堵孔口,防止塵土、砂礫等進入孔內(nei)(nei)。
4、鋼筋去污
采用機械方法或(huo)者鋼(gang)(gang)絲(si)刷除(chu)去(qu)鋼(gang)(gang)筋植入(ru)部(bu)分表(biao)面鐵銹和氧化層,然(ran)后使用丙酮除(chu)去(qu)鋼(gang)(gang)筋上殘留的油(you)污。已經處理過的鋼(gang)(gang)筋應該盡快植入(ru)孔內,避免重新生銹或(huo)粘上油(you)污。
5、配膠
按(an)需(xu)用(yong)膠(jiao)量取(qu)桶裝植筋膠(jiao)的A、B料(liao)(依照使用(yong)說明分別量取(qu)),并快速(su)混合(he)均勻。
6、注膠
膠液應盡快(kuai)低壓注(zhu)入到孔(kong)中,排出氣泡,保證膠層飽滿。
7、植筋
插入鋼(gang)(gang)筋(jin)用(yong)固(gu)(gu)(gu)定卡在孔(kong)(kong)(kong)(kong)兩(liang)端(duan)(duan)將鋼(gang)(gang)筋(jin)固(gu)(gu)(gu)定(因(yin)橫梁(liang)植(zhi)筋(jin)孔(kong)(kong)(kong)(kong)為通(tong)(tong)(tong)(tong)(tong)孔(kong)(kong)(kong)(kong),所(suo)以要保證鋼(gang)(gang)筋(jin)的位置(zhi)固(gu)(gu)(gu)定),在固(gu)(gu)(gu)定卡預留注膠孔(kong)(kong)(kong)(kong)和通(tong)(tong)(tong)(tong)(tong)氣(qi)孔(kong)(kong)(kong)(kong)(注膠孔(kong)(kong)(kong)(kong)設于(yu)固(gu)(gu)(gu)定卡下方(fang),可(ke)任取一(yi)端(duan)(duan);通(tong)(tong)(tong)(tong)(tong)氣(qi)孔(kong)(kong)(kong)(kong)設于(yu)橫梁(liang)兩(liang)端(duan)(duan)固(gu)(gu)(gu)定卡上方(fang)并加設20cm向上通(tong)(tong)(tong)(tong)(tong)氣(qi)管;通(tong)(tong)(tong)(tong)(tong)氣(qi)管管徑(jing)要小且(qie)緊(jin)貼植(zhi)筋(jin)孔(kong)(kong)(kong)(kong)截(jie)面頂(ding)點(dian),在植(zhi)筋(jin)孔(kong)(kong)(kong)(kong)截(jie)面頂(ding)點(dian)鑿一(yi)小缺口安(an)設通(tong)(tong)(tong)(tong)(tong)氣(qi)管),用(yong)快硬(ying)型(xing)環氧樹脂(zhi)封塞孔(kong)(kong)(kong)(kong)端(duan)(duan)(保證注膠孔(kong)(kong)(kong)(kong)和通(tong)(tong)(tong)(tong)(tong)氣(qi)孔(kong)(kong)(kong)(kong)暢(chang)通(tong)(tong)(tong)(tong)(tong))。
8、養護固化
已經植入孔內的鋼筋應在常溫下養護,不得擾動,24小時后可以進行下步施工作業(掛鋼板粘貼)。一般20℃時粘合劑在3-5天可以完全固化,現場抽樣檢驗應該在五天以后進行。植筋膠應用的領域十分廣泛,因此植筋膠的品牌也是非常多的,那么就一起看看植筋膠十大品牌有什么吧。
二、植筋膠是干什么用的
1、加固混凝土結構
植(zhi)(zhi)筋膠可以將鋼筋或鋼板與(yu)混凝(ning)土結構緊密(mi)地粘(zhan)合在一(yi)起,使混凝(ning)土結構的承載能力得到(dao)提(ti)高(gao)。通過植(zhi)(zhi)筋膠的加固,可以有效地改善混凝(ning)土結構的強度(du)和(he)穩定性,提(ti)高(gao)其(qi)抗震性能和(he)耐久性。
2、延長混凝土結構使用壽命
由于混凝(ning)土(tu)(tu)結(jie)構在使用(yong)過程中會(hui)(hui)受到外部環境的(de)影(ying)響,長時間(jian)使用(yong)后可能會(hui)(hui)出現龜裂、脫(tuo)落等現象(xiang),嚴重影(ying)響其使用(yong)壽命(ming)。通過使用(yong)植筋膠進行加固,可以有效地(di)延長混凝(ning)土(tu)(tu)結(jie)構的(de)使用(yong)壽命(ming),減少維修成本。
3、提高施工效率
相比傳統的(de)加(jia)固方(fang)法,使用植筋(jin)膠進行(xing)加(jia)固可(ke)以(yi)大大提高施工(gong)(gong)效率。植筋(jin)膠施工(gong)(gong)過程簡單,操作方(fang)便(bian),不需要進行(xing)大量的(de)焊接(jie)和(he)打(da)孔等工(gong)(gong)作,可(ke)以(yi)快(kuai)速完成(cheng)(cheng)加(jia)固工(gong)(gong)作,節省人力和(he)時間(jian)成(cheng)(cheng)本。
三、植筋膠需要復試檢測嗎
植(zhi)筋(jin)(jin)膠(jiao)(jiao)(jiao)需要做(zuo)復試(shi)。按(an)規(gui)(gui)范要求(qiu),承(cheng)重結(jie)構膠(jiao)(jiao)(jiao)粘劑的抽檢(jian)為3噸一個批次(ci)抽。現在一般做(zuo)都是先材料送檢(jian),合格后再施工。但中(zhong)小城(cheng)市無此試(shi)驗技術設備,一般是購買正規(gui)(gui)名牌廠家(jia)的化學螺栓或正規(gui)(gui)名牌的結(jie)構植(zhi)筋(jin)(jin)膠(jiao)(jiao)(jiao)。植(zhi)筋(jin)(jin)后再按(an)規(gui)(gui)定請有資(zi)質的檢(jian)測單位,現場(chang)做(zuo)抗拉(la)拔試(shi)驗。植(zhi)筋(jin)(jin)結(jie)構膠(jiao)(jiao)(jiao)的復試(shi)標(biao)(biao)準主(zhu)要依(yi)據《建(jian)筑結(jie)構植(zhi)筋(jin)(jin)膠(jiao)(jiao)(jiao)復試(shi)規(gui)(gui)范》進行。該規(gui)(gui)范將植(zhi)筋(jin)(jin)結(jie)構膠(jiao)(jiao)(jiao)的復試(shi)標(biao)(biao)準分為以下幾(ji)個方面:
1、物理性能指標:包(bao)括剪切粘結強度、壓縮強度等(deng)。
2、化學性能指標:如水解性(xing)能、耐油性(xing)能等。
3、熱穩定性能指標:如耐熱性能、耐寒(han)性能等。
四、植筋膠固化時間
植筋(jin)膠(jiao)固化時間(jian)在24小時左右,一般情況下都可以達到實驗要求的(de)粘(zhan)結強(qiang)(qiang)度;要達到穩(wen)妥效果要2-3天(tian)。結構(gou)(gou)膠(jiao)指強(qiang)(qiang)度高(gao)(壓縮強(qiang)(qiang)度>65MPa,鋼-鋼正拉(la)粘(zhan)接(jie)強(qiang)(qiang)度>30MPa,抗剪強(qiang)(qiang)度>18MPa),能(neng)承(cheng)受較(jiao)大荷(he)載(zai),且(qie)耐(nai)老化、耐(nai)疲(pi)勞、耐(nai)腐蝕,在預(yu)期壽命內性能(neng)穩(wen)定,適用(yong)于(yu)承(cheng)受強(qiang)(qiang)力的(de)結構(gou)(gou)件粘(zhan)接(jie)。非結構(gou)(gou)膠(jiao)強(qiang)(qiang)度較(jiao)低(di)、耐(nai)久性差,只(zhi)能(neng)用(yong)于(yu)普(pu)通(tong)、臨時性質的(de)粘(zhan)接(jie)、密封(feng)、固定,不能(neng)用(yong)于(yu)結構(gou)(gou)件粘(zhan)接(jie)。