一、碳纖維布是什么加固材料
加(jia)固材(cai)料(liao)是對建筑物進(jin)行加(jia)固處理的(de)材(cai)料(liao),碳(tan)(tan)纖(xian)維(wei)(wei)布就是一種常用(yong)(yong)的(de)加(jia)固材(cai)料(liao),是利用(yong)(yong)專用(yong)(yong)結構(gou)膠(jiao)將碳(tan)(tan)纖(xian)維(wei)(wei)布粘貼(tie)在混凝土(tu)表面,形(xing)成(cheng)復(fu)合結構(gou),碳(tan)(tan)纖(xian)維(wei)(wei)布通(tong)過與混凝土(tu)之間協同(tong)工作,對構(gou)件(jian)或結構(gou)起到加(jia)固及改善(shan)受(shou)力性能(neng)的(de)作用(yong)(yong),能(neng)有效改善(shan)結構(gou)狀態(減(jian)(jian)少變形(xing)、降低原(yuan)有結構(gou)應力、減(jian)(jian)少裂縫)。
二、加固碳纖維布需要送檢嗎
需要。
加(jia)固碳纖維布(bu)不僅施(shi)工(gong)(gong)(gong)(gong)前需要(yao)送檢(jian),加(jia)固工(gong)(gong)(gong)(gong)程(cheng)完(wan)工(gong)(gong)(gong)(gong)后也需要(yao)對碳纖維布(bu)及工(gong)(gong)(gong)(gong)程(cheng)的質量(liang)進(jin)行(xing)(xing)復檢(jian),這是《工(gong)(gong)(gong)(gong)程(cheng)結構加(jia)固材料安全性鑒定技術規(gui)范》工(gong)(gong)(gong)(gong)程(cheng)規(gui)范要(yao)求的規(gui)定:在工(gong)(gong)(gong)(gong)程(cheng)正(zheng)式施(shi)工(gong)(gong)(gong)(gong)前和工(gong)(gong)(gong)(gong)程(cheng)完(wan)工(gong)(gong)(gong)(gong)后,都需要(yao)對工(gong)(gong)(gong)(gong)程(cheng)所(suo)用的加(jia)固材料進(jin)行(xing)(xing)一(yi)個安全性的檢(jian)測。
由(you)于碳纖維(wei)(wei)布(bu)用(yong)于加(jia)固處理,如果使用(yong)了不合格的碳纖維(wei)(wei)布(bu),會(hui)對(dui)建筑結構造成危害,因此需要選擇(ze)正規廠(chang)家生產的加(jia)固碳纖維(wei)(wei)布(bu),并保證其(qi)各項(xiang)指標數據(ju)能通過檢查。
三、加固碳纖維布檢測項目有哪些
加固碳纖(xian)維布送(song)檢需要檢測的項目有很(hen)多:
1、施工(gong)前,需要檢測加固碳(tan)纖維布(bu)的材料(liao)力學性能,包括其抗拉強度(du)、彈性模量(liang)和伸長率等。
2、施工完成后,復檢主要是通過錘擊法來檢測碳纖維布的粘貼質量,通過對每一(yi)寸(cun)的碳(tan)纖(xian)維布(bu)(bu)進行錘擊(ji),檢測(ce)碳(tan)纖(xian)維布(bu)(bu)與混凝(ning)(ning)土(tu)之(zhi)間是(shi)(shi)否存在空鼓(gu)情況,如(ru)發現空鼓(gu),則說明碳(tan)纖(xian)維布(bu)(bu)與混凝(ning)(ning)土(tu)沒有完(wan)全(quan)貼合,沒用達(da)到共同受(shou)力的目的,如(ru)空鼓(gu)面(mian)積低于(yu)施工總面(mian)積的95%,則說明此次加固工程是(shi)(shi)不(bu)合格的,需要對工程進行返工。