施(shi)(shi)工前準備按照鋼(gang)結構(gou)施(shi)(shi)工方(fang)案的規定，防(fang)火施(shi)(shi)工前應(ying)對(dui)基材(cai)表面按要求進行(xing)除(chu)銹、防(fang)銹處理(li)，務求全面徹底，防(fang)火涂料(liao)(liao)施(shi)(shi)工前還對(dui)基材(cai)表面作塵(chen)(chen)土，油污等雜(za)質清除(chu)，采(cai)用高壓(ya)氣體或用高壓(ya)水槍進行(xing)表面除(chu)塵(chen)(chen)清理(li)，待基材(cai)表面無(wu)水進行(xing)除(chu)塵(chen)(chen)、除(chu)雜(za)物、油污等檢查合格后方(fang)可施(shi)(shi)工防(fang)火涂料(liao)(liao)。

   1.待涂表(biao)面的(de)處理：在(zai)施工之前(qian)，應(ying)將支承構(gou)件干凈(包括(kuo)除(chu)銹、清除(chu)焊渣及其它污物)；檢查鋼結構(gou)表(biao)面有(you)無(wu)漏刷防銹的(de)現象(xiang)，及時修補。

   2.防(fang)火涂(tu)料(liao)(liao)的(de)儲存：經檢驗合格的(de)涂(tu)料(liao)(liao)，應(ying)存放(fang)在干(gan)燥(zao)通風(feng)的(de)倉庫內。應(ying)將涂(tu)料(liao)(liao)擺放(fang)整齊(qi)，防(fang)止風(feng)吹雨淋、陽光暴(bao)曬，如(ru)結(jie)塊變質的(de)涂(tu)料(liao)(liao)，不得使用。

   防火涂料的施工

   1.采用噴涂方(fang)式。

   2.施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)：超薄(bo)型鋼結構防(fang)火涂(tu)料施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)前應充(chong)分攪拌均勻(yun)后(hou)方可施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)使用，施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)第(di)一(yi)遍厚(hou)度0.10-0.15㎜為宜(yi)，表干后(hou)18-24h進行第(di)二遍施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)，涂(tu)層(ceng)厚(hou)度以(yi)0.20-0.25㎜為宜(yi)，以(yi)后(hou)各遍施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)，涂(tu)層(ceng)厚(hou)度應控制在0.25-0.3㎜左右，直至達到(dao)規定厚(hou)度。每次施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)時間(jian)間(jian)隔為18-24小(xiao)時以(yi)上，施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)環境溫(wen)(wen)度為0-40℃。基(ji)材溫(wen)(wen)度為5-45℃。空氣相對濕度不(bu)(bu)大于90%,施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)現(xian)場空氣流通,風速不(bu)(bu)大于5m/S,室(shi)外作(zuo)業(ye)或施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)構件表面結露時不(bu)(bu)宜(yi)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)。

   3、防火涂(tu)(tu)(tu)(tu)料噴(pen)涂(tu)(tu)(tu)(tu)：噴(pen)涂(tu)(tu)(tu)(tu)底(di)(di)(di)層(ceng)(ceng)料，為提高涂(tu)(tu)(tu)(tu)料與鋼梁基層(ceng)(ceng)的(de)粘結(jie)強度(du)(du)，應(ying)在(zai)底(di)(di)(di)層(ceng)(ceng)的(de)漿(jiang)料中添(tian)加(jia)少(shao)量(liang)的(de)水性膠粘劑(ji)，一般為0.4Kg/M2或根據產品說明書添(tian)加(jia)，噴(pen)涂(tu)(tu)(tu)(tu)厚(hou)度(du)(du)為5mm左(zuo)右。涂(tu)(tu)(tu)(tu)層(ceng)(ceng)表(biao)面(mian)有明顯的(de)乳突、凹(ao)(ao)坑(keng)，應(ying)用(yong)抹(mo)刀修平。噴(pen)涂(tu)(tu)(tu)(tu)前(qian)應(ying)進行試噴(pen)并制作樣(yang)板。通過試噴(pen)確(que)定噴(pen)涂(tu)(tu)(tu)(tu)氣壓、噴(pen)距、移動速度(du)(du)等工(gong)藝的(de)最優參數，并經監理用(yong)標(biao)準樣(yang)板比對確(que)認后，方(fang)可(ke)進行大面(mian)積(ji)噴(pen)涂(tu)(tu)(tu)(tu)。噴(pen)涂(tu)(tu)(tu)(tu)時(shi)，噴(pen)槍(qiang)要(yao)垂(chui)直于被(bei)噴(pen)鋼構(gou)件表(biao)面(mian)，噴(pen)距6-10毫米，保(bao)持(chi)在(zai)0.4-0.6MP，噴(pen)槍(qiang)運行速度(du)(du)要(yao)保(bao)持(chi)穩定，不能在(zai)同一位置久留，避(bi)免造成涂(tu)(tu)(tu)(tu)料堆積(ji)和流淌。噴(pen)涂(tu)(tu)(tu)(tu)過程中，配(pei)料及往噴(pen)涂(tu)(tu)(tu)(tu)機(ji)內加(jia)料均要(yao)連(lian)續進行，不得停留。底(di)(di)(di)層(ceng)(ceng)涂(tu)(tu)(tu)(tu)料表(biao)面(mian)干(gan)燥后（底(di)(di)(di)層(ceng)(ceng)涂(tu)(tu)(tu)(tu)料施工(gong)24小時(shi)后），方(fang)可(ke)進行面(mian)層(ceng)(ceng)涂(tu)(tu)(tu)(tu)料的(de)噴(pen)涂(tu)(tu)(tu)(tu)，噴(pen)涂(tu)(tu)(tu)(tu)厚(hou)度(du)(du)為10mm，對于明顯凹(ao)(ao)凸不平處，應(ying)用(yong)抹(mo)刀進行抹(mo)平處理，以確(que)保(bao)涂(tu)(tu)(tu)(tu)層(ceng)(ceng)表(biao)面(mian)均勻光潔。

   施工中注意事項

   防(fang)火涂(tu)料(liao)在運輸存(cun)放過程(cheng)中要防(fang)雨防(fang)潮。

   防(fang)火涂料當(dang)出現固化(hua)、結塊(kuai)時不得(de)使用。剛施工完的涂層應(ying)防(fang)止(zhi)雨(yu)水淋。

   3.若涂料(liao)在(zai)使(shi)用中若變稠時(shi)（不屬(shu)時(shi)間(jian)過長硬化）可再(zai)加入(ru)少(shao)量水攪勻后再(zai)用。

   4.涂料噴涂后，宜用布或其(qi)它物品遮(zhe)擋，以(yi)免(mian)強風直吹和(he)暴曬(shai)，造成涂層(ceng)開裂(lie)。

   5.不需噴涂抹涂的(de)部(bu)位，要在噴涂前蓋(gai)住，一(yi)旦造成污染，應馬上清洗干凈。

   6.噴涂工具停止使用(yong)后(hou)，應馬上清洗干凈，以備再用(yong)。

   7.施工(gong)(gong)(gong)溫(wen)度：施工(gong)(gong)(gong)期間，以及施工(gong)(gong)(gong)后24之內，施工(gong)(gong)(gong)周圍環境及鋼構件溫(wen)度均應(ying)保持在5℃以上為(wei)宜。若(ruo)不能滿足(zu)此溫(wen)度條件時，應(ying)另采取其(qi)它特殊措施，防(fang)止(zhi)涂層受凍。當風速大于5m/s，或(huo)雨天和構件表面有結(jie)露時，不宜作(zuo)業。

   8.防火(huo)涂(tu)料初期強度較低，容易碰壞。因此，噴涂(tu)應(ying)在(zai)相關鋼(gang)結構施工完后再進行，防止強烈震動和(he)碰撞。

   9.施工時若有上、下(xia)立(li)體交叉作(zuo)業(ye)，應注意安(an)(an)全。特別(bie)是在(zai)腳手架上的操作(zuo)人員要加倍小心，操作(zuo)人員必須戴(dai)好防護用(yong)具，系(xi)好安(an)(an)全帶后方可操作(zuo)。