一、碳纖維布是什么加固材料
加(jia)固(gu)材(cai)料是(shi)對建筑物(wu)進行(xing)加(jia)固(gu)處理的材(cai)料,碳(tan)纖維(wei)布就(jiu)是(shi)一(yi)種常(chang)用(yong)的加(jia)固(gu)材(cai)料,是(shi)利(li)用(yong)專用(yong)結(jie)構(gou)(gou)膠將碳(tan)纖維(wei)布粘貼在混(hun)凝(ning)土(tu)表面,形成(cheng)復合結(jie)構(gou)(gou),碳(tan)纖維(wei)布通過(guo)與混(hun)凝(ning)土(tu)之間協同工作(zuo),對構(gou)(gou)件或結(jie)構(gou)(gou)起到加(jia)固(gu)及改(gai)善受力性能的作(zuo)用(yong),能有效改(gai)善結(jie)構(gou)(gou)狀態(減(jian)少變形、降低原(yuan)有結(jie)構(gou)(gou)應力、減(jian)少裂縫)。
二、加固碳纖維布需要送檢嗎
需要。
加(jia)(jia)固(gu)碳纖(xian)維(wei)布不僅施工(gong)(gong)(gong)前需要(yao)(yao)送檢(jian),加(jia)(jia)固(gu)工(gong)(gong)(gong)程(cheng)完工(gong)(gong)(gong)后也需要(yao)(yao)對碳纖(xian)維(wei)布及工(gong)(gong)(gong)程(cheng)的(de)質(zhi)量進行復檢(jian),這是(shi)《工(gong)(gong)(gong)程(cheng)結(jie)構加(jia)(jia)固(gu)材(cai)料安全性鑒(jian)定技術規范》工(gong)(gong)(gong)程(cheng)規范要(yao)(yao)求的(de)規定:在工(gong)(gong)(gong)程(cheng)正式施工(gong)(gong)(gong)前和工(gong)(gong)(gong)程(cheng)完工(gong)(gong)(gong)后,都需要(yao)(yao)對工(gong)(gong)(gong)程(cheng)所用的(de)加(jia)(jia)固(gu)材(cai)料進行一(yi)個安全性的(de)檢(jian)測(ce)。
由于(yu)碳纖(xian)維布用(yong)(yong)于(yu)加固處理,如果使用(yong)(yong)了不合(he)格的碳纖(xian)維布,會對建(jian)筑結構造(zao)成危害,因此需(xu)要(yao)選(xuan)擇正(zheng)規(gui)廠家生產的加固碳纖(xian)維布,并保證其各項指標(biao)數據能通過檢查。
三、加固碳纖維布檢測項目有哪些
加(jia)固碳纖維布送檢需要檢測的項(xiang)目有很多:
1、施(shi)工前,需要檢測加固碳纖維(wei)布的材料力學(xue)性(xing)能,包括其抗拉強度、彈性(xing)模量和伸長(chang)率等。
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)粘貼質量,通過對每(mei)一寸的(de)碳(tan)纖(xian)(xian)(xian)維(wei)布(bu)進行(xing)錘擊,檢測碳(tan)纖(xian)(xian)(xian)維(wei)布(bu)與混凝(ning)(ning)土之間是否存在(zai)空(kong)(kong)鼓(gu)情(qing)況,如(ru)發現空(kong)(kong)鼓(gu),則說明碳(tan)纖(xian)(xian)(xian)維(wei)布(bu)與混凝(ning)(ning)土沒有完(wan)全貼合(he),沒用達(da)到共(gong)同(tong)受力的(de)目的(de),如(ru)空(kong)(kong)鼓(gu)面(mian)積低(di)于施工總面(mian)積的(de)95%,則說明此次加(jia)固工程是不合(he)格的(de),需要對工程進行(xing)返工。