建築外牆塗料施工方法塗裝
發布時間:2014-08-09
1 前 言
建築外牆塗料對建築物具有裝飾和保護作用,與傳統的外牆飾麵材料如外牆麵磚、馬賽克等相比,具有節能、環保、色彩豐富、易yi於yu更geng新xin等deng特te點dian,所suo以yi近jin幾ji年nian在zai我wo國guo得de到dao了le較jiao快kuai的de發fa展zhan,許xu多duo省sheng市shi政zheng府fu都dou出chu台tai了le相xiang關guan文wen件jian,限xian製zhi或huo淘tao汰tai使shi用yong外wai牆qiang麵mian磚zhuan等deng。推tui廣guang建jian築zhu外wai牆qiang塗tu料liao,這zhe對dui建jian築zhu塗tu料liao行xing業ye無wu疑yi是shi個ge好hao消xiao息xi。前qian幾ji年nian進jin口kou乳ru膠jiao漆qi在zai衝chong擊ji了le國guo內nei市shi場chang的de同tong時shi也ye拉la動dong了le消xiao費fei,促cu進jin了le國guo內nei企qi業ye產chan品pin質zhi量liang的de提ti高gao,從cong而er促cu進jin了le我wo國guo建jian築zhu塗tu料liao的de發fa展zhan。隨sui著zhe建jian築zhu外wai牆qiang塗tu料liao的de迅xun速su發fa展zhan,也ye讓rang一yi些xie劣lie質zhi產chan品pin進jin入ru了le市shi場chang,出chu現xian外wai牆qiang塗tu裝zhuang質zhi量liang問wen題ti。如ru不bu杜du絕jue這zhe類lei問wen題ti的de產chan生sheng必bi將jiang極ji大da地di限xian製zhi外wai牆qiang塗tu料liao的de發fa展zhan。呼hu籲xu建jian設she主zhu管guan部bu門men、zhiliangjiandubumenjiaqiangzhiliangkongzhi,shengchanqiyezainulitigaochanpinzhiliangdetongshi,shigongqiyeyeyingkexuehelidizuzhishigong,jiaqiangzhiliangguanli,quebaotuzhuangzhiliang。
建築外牆塗料施工目前還沒有全國統一的專門的施工規範和驗收標準。隻是在《建築裝飾工程施工和驗收規範》的行業標準(JGJ.73-91)zhong,duiwaiqiangtuzhuanggongchengtichuleguifanheyaoqiu,danzaishijigongchengzhongquemeiyouguancheshishi。suizhejianzhutuliaoshengchanyuyingyongjishudefazhan,guifanzhongdebufenneirongyeyibushiyingdangqiandeyaoqiu。shanghai、江蘇、福建等地區相繼修訂了地方標準價牆塗料工程施工及驗收規程》,但(dan)在(zai)實(shi)際(ji)的(de)工(gong)程(cheng)施(shi)工(gong)管(guan)理(li)及(ji)工(gong)程(cheng)驗(yan)收(shou)中(zhong)未(wei)能(neng)嚴(yan)格(ge)執(zhi)行(xing),因(yin)此(ci)很(hen)難(nan)保(bao)證(zheng)施(shi)工(gong)質(zhi)量(liang)。發(fa)達(da)國(guo)家(jia)的(de)建(jian)築(zhu)塗(tu)裝(zhuang)是(shi)作(zuo)為(wei)一(yi)個(ge)專(zhuan)門(men)的(de)行(xing)業(ye),施(shi)工(gong)單(dan)位(wei)必(bi)須(xu)具(ju)備(bei)施(shi)工(gong)資(zi)質(zhi),施(shi)工(gong)人(ren)員(yuan)必(bi)須(xu)持(chi)上(shang)崗(gang)證(zheng)書(shu),同(tong)時(shi)對(dui)施(shi)工(gong)質(zhi)量(liang)和(he)安(an)全(quan)都(dou)有(you)嚴(yan)格(ge)的(de)、切實可行的管理措施和驗收標準。為了使建築外牆塗料行業長期健康發展,加強對建築外牆塗料施工的科學管理刻不容緩。
2 建築外牆塗裝的底層要求及處理
2.1 足夠的養護期
新的水泥砂漿混凝土表麵必須經過合理的養護時間,讓其“吐堿”,並充分幹燥,要求其含水率小於10%,PH 值小於10後方可施工。但牆體表麵含水率和pH的測定並不方便。理論上講,在溫度25 度,相對濕度65%的條件下,水泥砂漿牆麵須幹燥21d以上,而在不同的季節,根據經驗,夏天通常需2周以上,冬天通常需4zhouyishang。muqianyixiegaocengjianzhuzaiwaiqiangfenshuawangonghou,changchangxianchaichujiaoshoujiayanghulianggeyueyishang,zaiyongdiaolanjinxingwaiqiangtuzhuangshigong,zheyangbujinjiangdilehanshuilvhepH值,而且如果牆麵有收縮開裂等缺陷,也可及時處理,很大程度上保證了外牆塗裝的質量;但是一些多層建築由於工期原因、腳手架等問題,常常不能保證足夠的養護期,為外牆塗裝留下隱患。
――――1:shouxianchongfendeyanghushijianshihennanzuodaode,xianzaidegongchenggongqibuchang,liugeiwaiqiangtuliaodeshigonggongqijiugengduan,hennanbaozhengqiwanquandadaoziranyanghuqideyaoqiu,yincirangqiwanquan“吐堿”是不可能的。
2:不同性質的塗料對底麵的要求也不一樣,溶劑型塗料要求底麵含水率小於8%,水溶性塗料要求底麵含水率小於10%,如果底麵是木製含水率可以小於12%。
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2.2 底層處理要合格
底層表麵應幹燥、堅實、牢固,不應有起砂、裂縫。疏鬆等缺陷。外牆塗裝的底層根據對塗裝的要求分為普通、中級、高(gao)級(ji)抹(mo)灰(hui)底(di)層(ceng)或(huo)混(hun)凝(ning)土(tu)底(di)層(ceng)。建(jian)築(zhu)外(wai)牆(qiang)塗(tu)料(liao)施(shi)工(gong)前(qian)必(bi)須(xu)對(dui)抹(mo)灰(hui)和(he)混(hun)凝(ning)土(tu)底(di)層(ceng)進(jin)行(xing)驗(yan)收(shou),未(wei)經(jing)驗(yan)收(shou)或(huo)驗(yan)收(shou)不(bu)合(he)格(ge)的(de)牆(qiang)麵(mian)不(bu)能(neng)進(jin)行(xing)塗(tu)裝(zhuang)施(shi)工(gong),如(ru)牆(qiang)麵(mian)有(you)起(qi)砂(sha)、裂縫、疏鬆等現象應要求土建單位進行處理,要鏟除疏鬆層,修補裂縫、缺棱掉角等缺陷,待驗收合格後方可施工。
――――yinggaishuoqiangmianzhiliangquexianzhong,kongguduituliaoshigongdeweixiezuida。tuliaokaishishigong,jibiaoshiduiqiangmianrenke,xuduogongchengyingongqijinzhang,gongxubudaowei,zhishiqiangmianzhiliangliuxiayinhuan,yinci,zaituliaojinchangshigongqianyidingyaopeihejianli,tujianfangyangeyanshouqiangmian。ruguoqueshaozheyangdeyanshou,jiangduiweilaideshigongzaochengbuxiaodemafan。
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2.3 底層表麵清潔
底層表麵必須清潔,無泥土、白霜、油汙及脫模劑等汙染物附著。如發現有上述附著物,應用鏟刀、鋼絲刷、砂紙。洗滌劑等除去,再用清水衝洗幹淨,幹燥後方可進行塗裝。牆麵經處理後應盡快進行施工,以免重新汙染。
――――duichuangdebaohu,tebieshixianzailiuxingdedamianjiluodisugangchuang。sugangshangyidanwurannizihuotuliaojinanqingxi,erqiedabufengongchengsugangchuangchuangkuangdouzaituliaozhiqianshigongwanbi,benzhe“誰後施工誰保護”deyuanze,tuliaoshigongfangduisugangyidingyaozuozaixidebaohu,fouzeqingxiqilaishihenmafande。zuihaodebanfashihesugangzhizuodanweixieshanghuhuidetiaojian,birurangqimianfeishiyongdiaolanweixiusuchuanghedamifengjiaodeng。
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2.4 外牆麵的分格條
外牆麵塗裝直做分格線處理,分格條有多種形式,過去常在抹麵砂漿中預埋木條,待塗裝施工後,先去除本條,再用深色塗料勾縫;jinjinianlai,kaishidaliangshiyongsuliaofengetiao,xingshiduoyang,xiaoguobucuo,danyaozhuyituliaoshigongshi,yingduiqijinxingbaohu,bunengrangtuliaowuranfengetiao。wulunmuzhihuosuliaofengetiaodouyaoqiucaizhijianyingtingba,buyibianxing。
2.5 對抹灰層的處理
外牆塗裝不宜大麵積批刮膩子,建議對抹灰層進行細拉毛,然後塗刷底漆、麵漆即可。如確需批刮膩子,建議使用聚合物水泥膩子,切不可使用普通低強度的內牆膩子,包括 801jiaojiashuinileinizi,qienizicengbuyitaihou。yaoqiuqiangmiandicengbuketaicucao,taicucaohuiyingxiangzhuangshizhiliang,danyebunengtaiguanghua,taiguanghuahuijiangdituliaofuzheli。
3 施工方案及施工方法
3.1 薄層外牆塗料的施工
包括合成樹脂乳液外牆塗料和溶劑型外牆塗料。合成樹脂乳液外牆塗料(乳膠漆)有高、中、低檔產品,適應於不同層次的消費者。溶劑型外牆塗料屬中高檔外牆塗料,用於較高要求的塗裝工程。
◆薄層外牆塗料尤其適合細拉毛牆麵。如需批刮膩子,應選用聚合物水泥膩子,且不宜太厚。
◆一般采用一遍底塗、二遍麵塗施工。根據工程質量要求可以適當增加麵塗遍數。
◆底漆的作用:fengbiqiangmiandejianxing,tigaomiantuliaoyuqiangmiandefuzheli,bimianyinqiangtiguoyuganzaoerdaliangxishoutuliao,bingbaozhengxiliaoliangxiangdang,zengjiadicengcailiaodeqiangdu。dandiqidezuoyongyeshiyouxiande,suishiyonglediqi,dicengdepH和含水率也必須待符合要求後方可施工。
◆施工方法:可以采用輥塗、刷塗、有氣噴塗和無氣噴塗。
◆顏色的選擇:外(wai)牆(qiang)塗(tu)料(liao)的(de)褪(tui)色(se)是(shi)個(ge)普(pu)遍(bian)存(cun)在(zai)的(de)問(wen)題(ti)。優(you)質(zhi)外(wai)牆(qiang)塗(tu)料(liao)褪(tui)色(se)較(jiao)慢(man)並(bing)不(bu)意(yi)味(wei)著(zhe)永(yong)遠(yuan)不(bu)褪(tui)色(se),所(suo)以(yi)一(yi)般(ban)建(jian)議(yi)外(wai)牆(qiang)塗(tu)料(liao)選(xuan)用(yong)較(jiao)深(shen)或(huo)較(jiao)暗(an)的(de)顏(yan)色(se),一(yi)方(fang)麵(mian)使(shi)得(de)建(jian)築(zhu)物(wu)顯(xian)得(de)沉(chen)穩(wen)大(da)方(fang),另(ling)一(yi)方(fang)麵(mian)較(jiao)暗(an)的(de)顏(yan)色(se)一(yi)般(ban)是(shi)無(wu)機(ji)顏(yan)料(liao)配(pei)製(zhi)的(de),而(er)無(wu)機(ji)顏(yan)料(liao)的(de)耐(nai)候(hou)性(xing)較(jiao)有(you)機(ji)顏(yan)料(liao)為(wei)好(hao),所(suo)以(yi)褪(tui)色(se)也(ye)較(jiao)慢(man)。另(ling)外(wai),同(tong)一(yi)建(jian)築(zhu)物(wu)應(ying)選(xuan)用(yong)同(tong)批(pi)次(ci)的(de)塗(tu)料(liao),以(yi)確(que)保(bao)顏(yan)色(se)一(yi)致(zhi)。
◆建築物的塗裝施工應該自上而下進行,每一度塗刷應以分隔線、牆麵陰陽角交接處或落水管為界。
◆施工間隙(重塗時間)嚴格按照產品說明書進行。
◆塗料開桶後應充分攪拌均勻,如軸度太大,可根據說明書加稀釋劑(乳膠漆一般是加水)來調整施工性能,注意根據要求,尤其是乳膠漆不可加入過量的水,否則水會使幹燥後的塗層成膜困難及降低塗層的光澤度、耐久性和遮蓋力等性能。
◆溫(wen)度(du)和(he)濕(shi)度(du)的(de)影(ying)響(xiang)。塗(tu)料(liao)說(shuo)明(ming)書(shu)中(zhong)一(yi)般(ban)都(dou)規(gui)定(ding)了(le)進(jin)行(xing)塗(tu)裝(zhuang)施(shi)工(gong)的(de)最(zui)低(di)溫(wen)度(du)。其(qi)中(zhong)乳(ru)膠(jiao)漆(qi)對(dui)施(shi)工(gong)溫(wen)度(du)的(de)要(yao)求(qiu)最(zui)高(gao),如(ru)果(guo)低(di)於(yu)一(yi)定(ding)溫(wen)度(du)施(shi)工(gong),就(jiu)會(hui)導(dao)致(zhi)不(bu)能(neng)很(hen)好(hao)的(de)成(cheng)膜(mo)。在(zai)這(zhe)裏(li)還(hai)有(you)個(ge)誤(wu)區(qu):有you些xie用yong戶hu認ren為wei高gao檔dang的de乳ru膠jiao漆qi在zai進jin行xing施shi工gong時shi的de溫wen度du可ke以yi低di一yi些xie,其qi實shi正zheng好hao相xiang反fan,由you於yu中zhong高gao檔dang乳ru膠jiao漆qi一yi般ban是shi選xuan用yong玻bo璃li化hua溫wen度du較jiao高gao的de乳ru液ye配pei製zhi的de,且qie乳ru液ye所suo占zhan的de比bi例li較jiao高gao,所suo以yi即ji使shi加jia入ru大da量liang的de成cheng膜mo助zhu劑ji,還hai需xu要yao較jiao高gao的de成cheng膜mo溫wen度du,即ji施shi工gong溫wen度du。
另外,在我國的南方地區,濕度也常常影響施工的質量,尤其對溶劑型外牆塗料,一般濕度大於85%deqingkuangxiabuyishigong,yinweishiduguogaodeqingkuangxia,tumoganzaohenman,zheyangbujinyingxiangtucengduiqiangmiandefuzheli,erqieyishiqiangmianfahua。yincizaikongqishiduchuyubaohezhuangtaishi,rudawutianqishibunengjinxingtuzhuangshigong,erzaidayuguohou,yaodaiqiangmianganzaohoufangkeshigong。
3.2 複層塗料的施工
複層外牆塗料也稱凹凸花紋塗料或浮雕噴塑塗料,這裏有個觀念需要轉變:以yi往wang強qiang調tiao複fu層ceng塗tu料liao施shi工gong時shi,顆ke粒li要yao大da,凹ao凸tu感gan要yao強qiang,但dan由you於yu當dang前qian環huan境jing汙wu染ran較jiao大da等deng原yuan因yin,現xian在zai往wang往wang流liu行xing顆ke粒li小xiao而er均jun勻yun,稍shao有you凹ao凸tu感gan的de外wai牆qiang塗tu料liao,也ye稱cheng桔ju皮pi狀zhuang外wai牆qiang塗tu料liao。
◆複(fu)層(ceng)塗(tu)料(liao)不(bu)要(yao)求(qiu)底(di)層(ceng)非(fei)常(chang)平(ping)整(zheng),對(dui)於(yu)粗(cu)拉(la)毛(mao)牆(qiang)麵(mian)選(xuan)用(yong)複(fu)層(ceng)塗(tu)料(liao)較(jiao)為(wei)合(he)理(li)。對(dui)於(yu)缺(que)棱(leng)掉(diao)角(jiao)等(deng)有(you)明(ming)顯(xian)缺(que)陷(xian)的(de)應(ying)用(yong)聚(ju)合(he)物(wu)水(shui)泥(ni)膩(ni)子(zi)修(xiu)補(bu)後(hou)方(fang)能(neng)進(jin)行(xing)塗(tu)裝(zhuang)。
◆需塗刷底塗,因為底層塗料不僅可以封閉牆麵的堿性,調整底層的滲透性,而且可以增加主塗層的附著力,所以不可漏刷或不刷。
◆主塗層的施工:zhutucengyechengguliao。ruguoshuyufanyingguhuaxingdeyingsuipeisuiyong,bukejiucun,qiepeiliaoyaoyouzhuanrenfuze,baozhengpeiliaozhunque。zhutucengtuliaoshigongshiyibancaiyongjixiepentu,suoyishigongqianyingjinxingshipen,tongshiduituliaojindu、噴槍種類、槍嘴直徑、槍口氣壓、噴槍與牆麵的距離和角度等都要進行適當的調節。應先噴塗樣板,經檢查合格後方可大麵積施工。
◆陰yin陽yang角jiao分fen隔ge線xian處chu應ying加jia以yi遮zhe擋dang,噴pen槍qiang的de行xing走zou路lu線xian可ke上shang下xia或huo左zuo右you進jin行xing,不bu均jun勻yun處chu可ke補bu噴pen,以yi保bao證zheng均jun勻yun。主zhu塗tu層ceng噴pen塗tu完wan畢bi後hou根gen據ju要yao求qiu可ke以yi用yong塑su料liao輥gun或huo橡xiang皮pi輥gun蘸zhan煤mei油you等deng溶rong劑ji進jin行xing滾gun壓ya,每mei輥gun交jiao接jie處chu不bu要yao出chu現xian明ming顯xian接jie痕hen。
◆桔(ju)皮(pi)狀(zhuang)外(wai)牆(qiang)塗(tu)料(liao)工(gong)程(cheng)也(ye)有(you)采(cai)用(yong)諸(zhu)如(ru)厚(hou)質(zhi)觸(chu)變(bian)型(xing)乳(ru)膠(jiao)漆(qi)施(shi)工(gong)方(fang)法(fa)來(lai)施(shi)工(gong)的(de),類(lei)似(si)裝(zhuang)飾(shi)砂(sha)漿(jiang)。選(xuan)用(yong)不(bu)同(tong)花(hua)樣(yang)的(de)輥(gun)筒(tong),創(chuang)造(zao)出(chu)各(ge)種(zhong)各(ge)樣(yang)的(de)造(zao)型(xing)。這(zhe)類(lei)塗(tu)料(liao)在(zai)施(shi)工(gong)中(zhong)的(de)手(shou)法(fa)很(hen)關(guan)鍵(jian),如(ru)每(mei)次(ci)蘸(zhan)料(liao)的(de)多(duo)少(shao)、用力的大小等都會影響花紋的造型,因此施工人員要反複的試輥,在掌握要領後,方可進行大麵積施工。
◆罩麵塗層:在主塗層表麵一般罩2道麵塗,麵塗可選用溶劑型外牆塗料或合成樹脂乳液外牆塗料乳膠漆)。罩麵塗層的施工和薄層外牆塗料的施工相同。
3.3 彩色砂壁狀外牆塗料的施工
caiseshabizhuangwaiqiangtuliaoyechengwaiqiangpensha。zhezhongtuliaozengjingshidaduoshuzhuzhaixiaoqudewaiqiangsuoxuanyongdezhuangshituliao,danyouyuqinaizhanwuxingnengjiaocha,suoyizaijinjiniandeyingyongzhongshoudaoxianzhi,bingzaicijichushangkaifaleliangzhongxindewaiqiangzhuangshituliao――zhenzhuqihezhenshiqi。suoweizhenzhuqi,zhideshizaiwaiqiangpenshadebiaomianzhaoshangrongjixingwaiqiangtuliaohuoyouguangderujiaoqi,zheyangyilaitucengbiaomianxingchengxiangzhenzhuyiyangguangzedexiaoguo,youcideming“珍珠漆”。真石漆則係選用不同粒徑的天然石粉顆粒製作的高檔外牆噴砂,然後再在表麵罩上溶劑型罩麵清漆而成。
◆底層表麵如有缺棱掉角、孔洞、裂縫、麻麵等缺陷,應采用聚合物膩子修補。
◆為(wei)了(le)減(jian)少(shao)底(di)層(ceng)吸(xi)水(shui)性(xing),增(zeng)強(qiang)附(fu)著(zhe)力(li),可(ke)在(zai)底(di)層(ceng)上(shang)塗(tu)刷(shua)一(yi)道(dao)封(feng)閉(bi)底(di)漆(qi)。真(zhen)石(shi)漆(qi)由(you)於(yu)采(cai)用(yong)天(tian)然(ran)石(shi)料(liao),遮(zhe)蓋(gai)力(li)差(cha),所(suo)以(yi)封(feng)閉(bi)底(di)漆(qi)應(ying)配(pei)製(zhi)成(cheng)與(yu)之(zhi)顏(yan)色(se)相(xiang)近(jin),以(yi)有(you)效(xiao)保(bao)證(zheng)真(zhen)石(shi)漆(qi)的(de)裝(zhuang)飾(shi)效(xiao)果(guo)。
◆噴槍的操作。噴塗時應控製壓力為0.6~0.8MPa。如壓力過低,出料太慢;壓力過高,回彈大。另外噴鬥與牆麵的垂直距離應在 50 cm左右,噴槍運行時,必須與被塗麵垂直,並在與被塗麵平行的平麵內移動。噴塗時,一般中間塗料密,而旁邊稀疏,因此每行約有 1/3要重複運行。噴槍的運行速度應保持均勻,如運行過快,塗膜比較薄,會出現顏色不均勻,遮蓋力較差的毛病;如ru運yun行xing過guo慢man,會hui造zao成cheng局ju部bu塗tu料liao過guo厚hou甚shen至zhi流liu掛gua。真zhen石shi漆qi根gen據ju裝zhuang飾shi效xiao果guo的de需xu要yao可ke以yi噴pen塗tu兩liang遍bian。噴pen塗tu施shi工gong前qian,應ying檢jian查zha腳jiao手shou架jia不bu能neng靠kao牆qiang大da近jin,否fou則ze腳jiao手shou架jia處chu易yi形xing成cheng明ming顯xian接jie茬cha,影ying響xiang塗tu裝zhuang效xiao果guo。
◆罩麵塗料:珍zhen珠zhu漆qi表biao麵mian應ying罩zhao中zhong高gao檔dang外wai牆qiang塗tu料liao,顏yan色se可ke選xuan用yong白bai色se或huo彩cai色se,顏yan色se不bu可ke太tai深shen或huo太tai淺qian,因yin為wei如ru果guo太tai深shen了le就jiu不bu像xiang珍zhen珠zhu色se,而er大da淺qian了le則ze褪tui色se較jiao快kuai。罩zhao麵mian塗tu料liao應ying有you一yi定ding的de光guang澤ze。真zhen石shi漆qi罩zhao麵mian塗tu料liao宜yi選xuan用yong環huan氧yang一yi丙bing烯xi酸suan清qing漆qi或huo聚ju氨an酯zhi一yi丙bing烯xi酸suan清qing漆qi等deng雙shuang組zu分fen反fan應ying固gu化hua型xing罩zhao麵mian塗tu料liao,這zhe樣yang可ke提ti高gao最zui後hou塗tu層ceng的de耐nai沾zhan汙wu性xing,而er普pu通tong的de熱re塑su性xing丙bing烯xi酸suan清qing漆qi的de耐nai沾zhan汙wu性xing較jiao差cha。
4 案例分析
外牆塗料施工應重視溫度、濕度及底層處理等幾方麵常出現的問題。下麵就幾個案例進行分析。(注:以下列舉的案例及分析的問題都是屬於塗料性能正常而施工不當造成的。)
4.1 施工溫度的影響
外牆乳膠漆一般需要在5攝氏度以上施工,少數有光的乳膠漆要求在 10sheshiduyishangshigong。ruzaidongjishigong,suiranzhongwushidezuigaowendunengdadaoyaoqiu,danyouyuzaowanwendujiaodi,suoyiruguoshigongrenyuanbuzhuyijishitiaozhengshigongshijian,jiuhuichuxianbufenshigongqiangmiandetucengchengmobuhao。liruzai1996年nian初chu,南nan京jing某mou住zhu宅zhai小xiao區qu在zai塗tu裝zhuang施shi工gong中zhong選xuan用yong了le某mou廠chang的de有you光guang乳ru膠jiao漆qi進jin行xing施shi工gong,施shi工gong後hou,發fa現xian朝chao北bei的de牆qiang麵mian普pu遍bian出chu現xian了le開kai裂lie,塗tu層ceng成cheng魚yu鱗lin狀zhuang,且qie一yi碰peng即ji脫tuo落luo。最zui後hou現xian場chang分fen析xi認ren為wei:當dang時shi塗tu料liao的de施shi工gong溫wen度du正zheng處chu於yu最zui低di成cheng膜mo溫wen度du邊bian緣yuan,而er朝chao北bei的de牆qiang麵mian上shang照zhao不bu到dao陽yang光guang,所suo以yi其qi實shi際ji的de塗tu層ceng溫wen度du沒mei有you達da到dao最zui低di成cheng膜mo溫wen度du,因yin而er導dao致zhi朝chao北bei的de牆qiang麵mian成cheng膜mo不bu好hao,造zao成cheng了le以yi上shang的de後hou果guo。另ling外wai塗tu裝zhuang施shi工gong所suo要yao求qiu的de施shi工gong溫wen度du是shi指zhi當dang日ri的de最zui低di氣qi溫wen,如ru最zui低di氣qi溫wen達da不bu到dao,則ze早zao晚wan溫wen度du較jiao低di時shi不bu能neng施shi工gong。
4.2 施工濕度的影響
施工濕度對於塗裝施工的影響,往往不被人們重視,但當濕度大於85%或下雨後牆麵尚潮濕時,是不能進行外牆塗裝施工的。例如 1997年 12yuefen,nanjingshilianxuxiadawu,kongqishiduchangchuyubaohezhuangtai,mouzhuzhaixiaoqutuzhuangshijinxingwaiqiangpensha,shigongjieshuhoushiduotian,qiangmianhaishichaoshide,tucengchuxianliuzhui,bufenshuzhisuizhewushuiyiqiliuxialai,daitianqinghouzhinengchanchuqiangmianquanbudetuceng,zaijinxingzhongtu。
4.3 底層處理的影響
在塗裝施工中,還有一個容易被忽視的問題――底層的處理問題。
最常見的是采用低強度的膩子,影響了塗層的質量,最後造成整個塗層的破壞。例如在 1997年(nian)某(mou)單(dan)位(wei)自(zi)建(jian)宿(xiu)舍(she)樓(lou)時(shi),外(wai)牆(qiang)塗(tu)裝(zhuang)施(shi)工(gong)選(xuan)用(yong)的(de)是(shi)某(mou)品(pin)牌(pai)的(de)優(you)質(zhi)外(wai)牆(qiang)乳(ru)膠(jiao)漆(qi),由(you)於(yu)連(lian)續(xu)晴(qing)天(tian),施(shi)工(gong)很(hen)順(shun)利(li),塗(tu)層(ceng)表(biao)麵(mian)看(kan)效(xiao)果(guo)很(hen)好(hao),且(qie)已(yi)通(tong)過(guo)初(chu)步(bu)驗(yan)收(shou),但(dan)接(jie)著(zhe)下(xia)了(le)一(yi)場(chang)大(da)雨(yu),牆(qiang)麵(mian)出(chu)現(xian)大(da)麵(mian)積(ji)的(de)鼓(gu)泡(pao)現(xian)象(xiang),雨(yu)停(ting)後(hou),部(bu)分(fen)牆(qiang)麵(mian)呈(cheng)皺(zhou)皮(pi)狀(zhuang),最(zui)後(hou)通(tong)過(guo)現(xian)場(chang)分(fen)析(xi)認(ren)為(wei):牆麵采用的是纖維素和大白粉等調製的膩子,強度較低,而下雨後,底層吸水膨脹,造成塗層起泡等嚴重問題。
nizitaihouzaochengdeqiangmiankailiebingtuoluo。yibanjianyiwaiqiangtuzhuangshigongshi,buyidamianjipiguanizi,ruquexupiguanizi,yebuyipiguataihou。zheshiyinweinizicengyuqiangmiandicengdecailiaobutong,shensuoxishubutong,yizaochengkailie,shenzhituoluo。lirumougaocengjianzhu,waiqiangfenshuabuheyaoqiu,biaomianpingzhengdujiaocha,tuzhuangshigongdanweijuedingcaiyongpiguanizicengjinxingbujiu,jieguoyinianhou,waiqiangmiandamianjichuxianliewen,jubunizicengchuxianqiketuoluodengxianxiang,jingjianzhafaxiannizicengxicaiyongjuhewushuininizi,qiangduzugou,eryinqikailiedezhuyaoyuanyinshijubunizicengtaihou(厚度超過1cm)所致。
5 結束語
本(ben)文(wen)結(jie)合(he)工(gong)程(cheng)施(shi)工(gong)管(guan)理(li)實(shi)際(ji)經(jing)驗(yan)對(dui)建(jian)築(zhu)外(wai)牆(qiang)塗(tu)料(liao)施(shi)工(gong)進(jin)行(xing)了(le)粗(cu)淺(qian)的(de)探(tan)討(tao),可(ke)以(yi)相(xiang)信(xin),隻(zhi)要(yao)建(jian)築(zhu)塗(tu)料(liao)生(sheng)產(chan)企(qi)業(ye)穩(wen)定(ding)並(bing)提(ti)高(gao)產(chan)品(pin)質(zhi)量(liang),施(shi)工(gong)單(dan)位(wei)科(ke)學(xue)合(he)理(li)組(zu)織(zhi)施(shi)工(gong),建(jian)築(zhu)塗(tu)料(liao)行(xing)業(ye)必(bi)將(jiang)得(de)到(dao)快(kuai)速(su)、穩定的發展。
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