【冠亞技(ji)術CS-002石膏水(shui)(shui)(shui)份(fen)測定儀】冬季北(bei)方氣溫(wen)低，水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)能(neng)否施(shi)工(gong)(gong)(gong)(gong)，溫(wen)度(du)(du)在(zai)(zai)什么范圍內可以施(shi)工(gong)(gong)(gong)(gong)？這(zhe)(zhe)些都嚴重的(de)(de)影(ying)響著水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)的(de)(de)施(shi)工(gong)(gong)(gong)(gong)。水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)施(shi)工(gong)(gong)(gong)(gong)時(shi)(shi)一般需(xu)按照說明現場加清水(shui)(shui)(shui)適當攪拌(ban)后(hou)(hou)進(jin)行施(shi)工(gong)(gong)(gong)(gong)。在(zai)(zai)施(shi)工(gong)(gong)(gong)(gong)溫(wen)度(du)(du)達到(dao)冰(bing)點時(shi)(shi)，水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)施(shi)工(gong)(gong)(gong)(gong)時(shi)(shi)所需(xu)的(de)(de)水(shui)(shui)(shui)會結(jie)冰(bing)，自(zi)然(ran)是無法繼(ji)續施(shi)工(gong)(gong)(gong)(gong)水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)的(de)(de)了。如果施(shi)工(gong)(gong)(gong)(gong)溫(wen)度(du)(du)沒有(you)達到(dao)冰(bing)點，但在(zai)(zai)0度(du)(du)以上(shang)5度(du)(du)以下時(shi)(shi)呢(ni)？一樣不(bu)能(neng)施(shi)工(gong)(gong)(gong)(gong)！這(zhe)(zhe)種情況與(yu)冰(bing)點是兩個概念，前者是無法施(shi)工(gong)(gong)(gong)(gong)，后(hou)(hou)者是不(bu)能(neng)施(shi)工(gong)(gong)(gong)(gong)，因為在(zai)(zai)這(zhe)(zhe)樣的(de)(de)溫(wen)度(du)(du)下，水(shui)(shui)(shui)雖然(ran)不(bu)會結(jie)冰(bing)，但水(shui)(shui)(shui)泥(ni)(ni)自(zi)流平(ping)(ping)(ping)無法在(zai)(zai)正常(chang)時(shi)(shi)間(jian)范圍內與(yu)水(shui)(shui)(shui)充分反應達到(dao)其(qi)應有(you)的(de)(de)性能(neng)，所以若強行施(shi)工(gong)(gong)(gong)(gong)就自(zi)然(ran)留下許多(duo)后(hou)(hou)遺癥。

      水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)冬季施(shi)工最大(da)的自(zi)(zi)(zi)然障(zhang)礙(ai)就(jiu)是(shi)溫(wen)(wen)(wen)度(du)(du)問題(ti)，一(yi)(yi)般來說，很(hen)多人(ren)關注的是(shi)室(shi)內溫(wen)(wen)(wen)度(du)(du)，其實，更需(xu)(xu)要關注一(yi)(yi)下地(di)(di)表(biao)溫(wen)(wen)(wen)度(du)(du)情況。那么有地(di)(di)暖的地(di)(di)面(mian)，溫(wen)(wen)(wen)度(du)(du)高，可以(yi)施(shi)工水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)嗎？當地(di)(di)表(biao)溫(wen)(wen)(wen)度(du)(du)很(hen)高時(shi)，水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)一(yi)(yi)樣(yang)不(bu)(bu)(bu)(bu)建議施(shi)工，原(yuan)理還是(shi)一(yi)(yi)個(ge)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)化(hua)反(fan)(fan)應(ying)(ying)問題(ti)，溫(wen)(wen)(wen)度(du)(du)低(di)是(shi)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)化(hua)反(fan)(fan)應(ying)(ying)過(guo)慢(man)，溫(wen)(wen)(wen)度(du)(du)高是(shi)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)份(fen)揮發過(guo)快，在水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)與水(shui)(shui)(shui)(shui)(shui)(shui)(shui)還未及時(shi)完成反(fan)(fan)應(ying)(ying)之前(qian)，水(shui)(shui)(shui)(shui)(shui)(shui)(shui)份(fen)先(xian)揮發了(le)，造成水(shui)(shui)(shui)(shui)(shui)(shui)(shui)份(fen)的不(bu)(bu)(bu)(bu)足，一(yi)(yi)樣(yang)會產生很(hen)多質(zhi)量問題(ti)。一(yi)(yi)般來說，冬季施(shi)工水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)強(qiang)調溫(wen)(wen)(wen)度(du)(du)，所以(yi)基本(ben)在室(shi)外的施(shi)工被暫停(ting)（其實水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)目前(qian)大(da)多數還只是(shi)用(yong)于(yu)室(shi)內），而室(shi)內施(shi)工也不(bu)(bu)(bu)(bu)能一(yi)(yi)棍子(zi)全打死，并不(bu)(bu)(bu)(bu)是(shi)所有地(di)(di)面(mian)項目都(dou)無法(fa)施(shi)工，而是(shi)需(xu)(xu)要更加積極地(di)(di)為地(di)(di)面(mian)施(shi)工創造一(yi)(yi)些(xie)條(tiao)件。溫(wen)(wen)(wen)度(du)(du)過(guo)高或過(guo)低(di)，對水(shui)(shui)(shui)(shui)(shui)(shui)(shui)泥(ni)(ni)自(zi)(zi)(zi)流(liu)平(ping)來說，都(dou)是(shi)一(yi)(yi)個(ge)很(hen)大(da)的阻礙(ai)。

      進入冬(dong)季水泥(ni)自流(liu)平(ping)施工對地表(biao)溫(wen)度要求(qiu)在5℃以上,室溫(wen)亦(yi)在5~35℃,除堅持正常施工工藝(yi)外，還有(you)一些(xie)事(shi)項要格外注意：

      1、界(jie)面(mian)劑涂刷(shua)要更加充分,丙烯酸乳(ru)液(界(jie)面(mian)劑主要成(cheng)分)在低溫下成(cheng)膜固化(hua)時間會更長(chang),需(xu)要涂刷(shua)后(hou)較長(chang)時間進行自(zi)流(liu)平施工。　

      2、自(zi)流平要提(ti)前2天放置到5℃以(yi)上的(de)現(xian)場或庫房(fang),以(yi)免(mian)使(shi)用時溫度過低。

      3、施工(gong)用(yong)水要盡(jin)量10℃以上,使水化(hua)反應更快(kuai),嚴格控制(zhi)使用(yong)5℃以下冷水施工(gong)。在(zai)施工(gong)前一天將施工(gong)用(yong)水接出，放置在(zai)室溫20℃左右環境。

      4、攪拌(ban)自流平過程(cheng)要根(gen)據水(shui)溫適當調(diao)整攪拌(ban)時(shi)間，水(shui)溫低(di)(di)于10℃，適當延(yan)長攪拌(ban)時(shi)間，與(yu)自流平在(zai)桶中的(de)靜置時(shi)間，水(shui)溫越低(di)(di)靜置時(shi)間越要延(yan)長，一般(ban)10℃左(zuo)右清水(shui)需(xu)靜置5分鐘再次攪拌(ban)后進行正常施工。

      5、現(xian)場是(shi)地(di)熱時,在自流平施工中,應適當關閉或關閉一部分,使地(di)表(biao)溫度不(bu)高(gao)于(yu)35℃。　

      6、施工過程中門窗及時關閉以免過堂風。      

      7、如果現(xian)場是中央空調,應(ying)避免(mian)空調排(pai)風直吹地面使表(biao)面失水過快,產生起(qi)灰(hui)現(xian)象。

      8、冬季材料運輸中,應(ying)該使(shi)用防凍型界面劑(ji)，但防凍型界面劑(ji)也只是在一次凍融循(xun)環下可使(shi)用，二次冰凍會破乳失(shi)效。

      一般有(you)豐富安裝(zhuang)經驗(yan)的(de)(de)老師(shi)傅能確(que)定到底需(xu)不(bu)需(xu)要(yao)(yao)做(zuo)自流(liu)平(ping)，為(wei)了后(hou)期造成(cheng)不(bu)必要(yao)(yao)的(de)(de)地(di)面(mian)(mian)損失，該做(zuo)自流(liu)平(ping)的(de)(de)地(di)面(mian)(mian)一定要(yao)(yao)做(zuo)，這樣(yang)我(wo)們在(zai)后(hou)期的(de)(de)使用中(zhong)，也(ye)不(bu)用擔心鋪在(zai)上面(mian)(mian)的(de)(de)材(cai)料會出現鼓包和破裂現象(xiang)。