一、碳纖維布是什么加固材料
加(jia)固(gu)材(cai)(cai)(cai)料是對(dui)建(jian)筑物進行加(jia)固(gu)處理(li)的材(cai)(cai)(cai)料,碳(tan)纖(xian)(xian)維布就(jiu)是一種常用(yong)(yong)的加(jia)固(gu)材(cai)(cai)(cai)料,是利用(yong)(yong)專用(yong)(yong)結構(gou)膠將碳(tan)纖(xian)(xian)維布粘貼在混(hun)凝(ning)(ning)土表面,形(xing)成復合結構(gou),碳(tan)纖(xian)(xian)維布通過與混(hun)凝(ning)(ning)土之間協(xie)同工作(zuo),對(dui)構(gou)件(jian)或結構(gou)起到加(jia)固(gu)及改善受力性能的作(zuo)用(yong)(yong),能有效改善結構(gou)狀態(減(jian)少(shao)變形(xing)、降(jiang)低原有結構(gou)應(ying)力、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)纖(xian)維布不僅施工(gong)(gong)(gong)前(qian)需要(yao)送檢(jian),加固(gu)工(gong)(gong)(gong)程完(wan)工(gong)(gong)(gong)后也需要(yao)對碳(tan)纖(xian)維布及工(gong)(gong)(gong)程的質量(liang)進(jin)行復檢(jian),這是(shi)《工(gong)(gong)(gong)程結構加固(gu)材料(liao)安全性(xing)鑒定(ding)技術規范》工(gong)(gong)(gong)程規范要(yao)求的規定(ding):在工(gong)(gong)(gong)程正式施工(gong)(gong)(gong)前(qian)和工(gong)(gong)(gong)程完(wan)工(gong)(gong)(gong)后,都需要(yao)對工(gong)(gong)(gong)程所用的加固(gu)材料(liao)進(jin)行一個安全性(xing)的檢(jian)測。
由于碳(tan)纖(xian)(xian)維布(bu)用(yong)于加固處理,如(ru)果使用(yong)了不合(he)格(ge)的碳(tan)纖(xian)(xian)維布(bu),會對(dui)建筑結構造成危(wei)害,因此需(xu)要選(xuan)擇正規廠(chang)家(jia)生產的加固碳(tan)纖(xian)(xian)維布(bu),并保證其各項(xiang)指(zhi)標數據(ju)能通過檢(jian)查。
三、加固碳纖維布檢測項目有哪些
加固碳纖維布送(song)檢需(xu)要檢測的項目有很多:
1、施工(gong)前,需要檢測加固碳(tan)纖維布的材(cai)料(liao)力(li)學性能,包括其抗拉(la)強(qiang)度、彈性模(mo)量和伸長率等。
2、施工完成后,復檢主要是通過錘擊法來檢測碳纖維布的(de)粘貼質量,通(tong)過對(dui)每一寸的(de)碳(tan)纖維(wei)布(bu)進(jin)行錘(chui)擊,檢測碳(tan)纖維(wei)布(bu)與混凝土之(zhi)間是否存(cun)在空鼓情(qing)況,如發現空鼓,則說明(ming)碳(tan)纖維(wei)布(bu)與混凝土沒有(you)完全貼合(he),沒用達到共同受力的(de)目的(de),如空鼓面積低于施工(gong)總面積的(de)95%,則說明(ming)此次加固工(gong)程是不(bu)合(he)格的(de),需(xu)要(yao)對(dui)工(gong)程進(jin)行返(fan)工(gong)。