一、碳纖維布是什么加固材料
加(jia)(jia)(jia)固材(cai)料是對(dui)建筑物進行加(jia)(jia)(jia)固處理(li)的(de)材(cai)料,碳(tan)纖維布就(jiu)是一種常(chang)用(yong)的(de)加(jia)(jia)(jia)固材(cai)料,是利用(yong)專(zhuan)用(yong)結(jie)構(gou)(gou)膠將碳(tan)纖維布粘(zhan)貼在(zai)混凝土表(biao)面(mian),形成復合結(jie)構(gou)(gou),碳(tan)纖維布通(tong)過與混凝土之間協同工作(zuo),對(dui)構(gou)(gou)件或結(jie)構(gou)(gou)起到加(jia)(jia)(jia)固及改(gai)(gai)善(shan)受(shou)力(li)性能的(de)作(zuo)用(yong),能有效改(gai)(gai)善(shan)結(jie)構(gou)(gou)狀態(減(jian)少(shao)變形、降低原有結(jie)構(gou)(gou)應力(li)、減(jian)少(shao)裂縫(feng))。
二、加固碳纖維布需要送檢嗎
需要。
加固(gu)碳(tan)(tan)纖維布(bu)(bu)不(bu)僅(jin)施工(gong)(gong)(gong)前(qian)需要送檢(jian)(jian),加固(gu)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)完(wan)工(gong)(gong)(gong)后也需要對碳(tan)(tan)纖維布(bu)(bu)及(ji)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)的(de)質量進(jin)行復檢(jian)(jian),這(zhe)是《工(gong)(gong)(gong)程(cheng)(cheng)(cheng)結構加固(gu)材(cai)料(liao)安(an)全性鑒定技(ji)術規范》工(gong)(gong)(gong)程(cheng)(cheng)(cheng)規范要求的(de)規定:在(zai)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)正(zheng)式施工(gong)(gong)(gong)前(qian)和(he)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)完(wan)工(gong)(gong)(gong)后,都需要對工(gong)(gong)(gong)程(cheng)(cheng)(cheng)所用的(de)加固(gu)材(cai)料(liao)進(jin)行一個安(an)全性的(de)檢(jian)(jian)測。
由于碳纖(xian)維(wei)布用(yong)于加(jia)固(gu)處理,如(ru)果使用(yong)了不合格的(de)碳纖(xian)維(wei)布,會對建筑結構造(zao)成危害,因此需要選擇正規廠家生產的(de)加(jia)固(gu)碳纖(xian)維(wei)布,并保證其(qi)各項(xiang)指標(biao)數據能通過(guo)檢查。
三、加固碳纖維布檢測項目有哪些
加固碳纖維布送檢需要(yao)檢測的(de)項目(mu)有很多:
1、施工前(qian),需(xu)要(yao)檢測加固碳纖維布(bu)的材料力學(xue)性(xing)能,包(bao)括其抗(kang)拉強(qiang)度、彈(dan)性(xing)模量和(he)伸長率等(deng)。
2、施工完成后,復檢主要是通過錘擊法來檢測碳纖維布的(de)(de)粘貼質量,通過對每(mei)一寸的(de)(de)碳纖(xian)維(wei)(wei)布進(jin)(jin)行錘擊,檢測(ce)碳纖(xian)維(wei)(wei)布與混(hun)凝(ning)土(tu)(tu)之間是(shi)否存在空鼓(gu)(gu)情況,如發現(xian)空鼓(gu)(gu),則說(shuo)(shuo)明(ming)碳纖(xian)維(wei)(wei)布與混(hun)凝(ning)土(tu)(tu)沒有完全貼合(he),沒用達(da)到共同(tong)受力的(de)(de)目的(de)(de),如空鼓(gu)(gu)面(mian)積(ji)低(di)于施工(gong)總面(mian)積(ji)的(de)(de)95%,則說(shuo)(shuo)明(ming)此次加固工(gong)程(cheng)是(shi)不合(he)格的(de)(de),需要(yao)對工(gong)程(cheng)進(jin)(jin)行返(fan)工(gong)。