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我(wo)們(men)采用(yong)的(de)(de)(de)(de)聚(ju)氨(an)酯堵(du)漏(lou)劑屬于氰(qing)凝(ning)(ning)類材(cai)料(liao)產(chan)品,這種(zhong)產(chan)品是甲(jia)苯二異(yi)氰(qing)酸酯和(he)三羥基(ji)聚(ju)醚(mi)進行(xing)化學(xue)反應合成的(de)(de)(de)(de)單組分高分子化學(xue)堵(du)漏(lou)材(cai)料(liao),它比(bi)(bi)其他的(de)(de)(de)(de)材(cai)料(liao)要環保,它對(dui)人體無害無毒、無污(wu)染、親(qin)水(shui)(shui)(shui)(shui)性(xing)好,延伸(shen)性(xing)非常的(de)(de)(de)(de)良(liang)好,彈(dan)性(xing)還有(you)抗滲(shen)性(xing)也比(bi)(bi)一(yi)般的(de)(de)(de)(de)材(cai)料(liao)高,耐低(di)溫(wen)性(xing),在(zai)水(shui)(shui)(shui)(shui)中長期保持原形,這就達(da)到了防水(shui)(shui)(shui)(shui)堵(du)漏(lou)的(de)(de)(de)(de)效(xiao)果(guo)。介(jie)紹另一(yi)種(zhong)材(cai)料(liao)是水(shui)(shui)(shui)(shui)泥(ni)基(ji)滲(shen)透(tou)結晶(jing)型防水(shui)(shui)(shui)(shui)涂料(liao)是含(han)有(you)活性(xing)化學(xue)物(wu)(wu)質(zhi),通過(guo)水(shui)(shui)(shui)(shui)泥(ni)基(ji)滲(shen)透(tou)結晶(jing)型防水(shui)(shui)(shui)(shui)涂料(liao)是含(han)有(you)活性(xing)化學(xue)物(wu)(wu)質(zhi),和(he)混凝(ning)(ning)土中游離子交(jiao)互反應生(sheng)結晶(jing)物(wu)(wu),反應出來(lai)的(de)(de)(de)(de)結晶(jing)物(wu)(wu)吸水(shui)(shui)(shui)(shui)膨大,由疏至密,與凝(ning)(ning)土結構表(biao)層(ceng)形成一(yi)個至密的(de)(de)(de)(de)抗滲(shen)區域(yu),從(cong)而提高了防水(shui)(shui)(shui)(shui)堵(du)漏(lou)的(de)(de)(de)(de)能(neng)力。可以根據防水(shui)(shui)(shui)(shui)堵(du)漏(lou)的(de)(de)(de)(de)出現的(de)(de)(de)(de)不(bu)同情況來(lai)選擇以上兩種(zhong)不(bu)同的(de)(de)(de)(de)防水(shui)(shui)(shui)(shui)堵(du)漏(lou)材(cai)料(liao)達(da)到防水(shui)(shui)(shui)(shui)堵(du)漏(lou)的(de)(de)(de)(de)效(xiao)果(guo)。
發現對(dui)眾多堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)材(cai)料(liao)(liao)(liao)和(he)防水(shui)(shui)(shui)(shui)(shui)(shui)材(cai)料(liao)(liao)(liao)的技術(shu)性能不(bu)(bu)(bu)了解,不(bu)(bu)(bu)重(zhong)視(shi)研究(jiu)防水(shui)(shui)(shui)(shui)(shui)(shui)技術(shu),國內的防水(shui)(shui)(shui)(shui)(shui)(shui)堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)材(cai)料(liao)(liao)(liao)大多不(bu)(bu)(bu)過關。施(shi)工時(shi)不(bu)(bu)(bu)找漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)點(dian)、漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)線(xian);見(jian)(jian)縫(feng)漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)即騎(qi)縫(feng)打眼灌漿(jiang)(jiang)(jiang);見(jian)(jian)墻(qiang)面(mian)(mian)滲水(shui)(shui)(shui)(shui)(shui)(shui)即滿墻(qiang)打眼灌漿(jiang)(jiang)(jiang)或在(zai)墻(qiang)面(mian)(mian)涂刷(shua)表面(mian)(mian)材(cai)料(liao)(liao)(liao);見(jian)(jian)沉(chen)降縫(feng)漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)即剔鑿填充剛性防水(shui)(shui)(shui)(shui)(shui)(shui)材(cai)料(liao)(liao)(liao)或灌注熱瀝(li)青堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)等(deng)等(deng),提示這種盲目打眼、盲目灌漿(jiang)(jiang)(jiang)、盲目堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)的最終結果(guo)是鉆孔不(bu)(bu)(bu)進漿(jiang)(jiang)(jiang)或不(bu)(bu)(bu)易(yi)進漿(jiang)(jiang)(jiang),沉(chen)降縫(feng)堵(du)(du)(du)(du)(du)剛性防水(shui)(shui)(shui)(shui)(shui)(shui)材(cai)料(liao)(liao)(liao),裂(lie)縫(feng)后繼續漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui),未真正(zheng)將漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)點(dian)、漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)線(xian)、漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)縫(feng)堵(du)(du)(du)(du)(du)嚴,造成(cheng)(cheng)堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)不(bu)(bu)(bu)成(cheng)(cheng)功;單純采(cai)用(yong)各種材(cai)料(liao)(liao)(liao)在(zai)砂漿(jiang)(jiang)(jiang)層(ceng)或混凝土(tu)表面(mian)(mian)涂刷(shua)成(cheng)(cheng)膜堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou),忽(hu)視(shi)了隱(yin)蔽漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)點(dian)、漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)縫(feng)的處理,只有點(dian)堵(du)(du)(du)(du)(du)、線(xian)堵(du)(du)(du)(du)(du)和(he)面(mian)(mian)涂堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)相結合(he)才(cai)能成(cheng)(cheng)功;對(dui)重(zhong)點(dian)漏(lou)(lou)(lou)水(shui)(shui)(shui)(shui)(shui)(shui)部位(wei)和(he)沉(chen)降縫(feng)堵(du)(du)(du)(du)(du)漏(lou)(lou)(lou)應采(cai)用(yong)多道防水(shui)(shui)(shui)(shui)(shui)(shui)線(xian)。
我們都知道地下室(shi)防(fang)水(shui)(shui)的(de)(de)設(she)計(ji)對建筑物的(de)(de)影響(xiang)非常大(da)(da),設(she)計(ji)時要綜(zong)合多方面的(de)(de)因素,采用(yong)剛柔相接,因地制宜,綜(zong)合治理(li),防(fang)、排、堵相結合的(de)(de)原則(ze)。根據現場的(de)(de)走訪和多年的(de)(de)防(fang)水(shui)(shui)施工(gong)經驗來(lai)給大(da)(da)家(jia)介紹一下:a.地下室(shi)結構(gou)室(shi)外(wai)頂(ding)板宜優先采用(yong)結構(gou)起坡(po)。b.地下室(shi)頂(ding)板上(shang)有覆(fu)土(tu)時,可(ke)設(she)塑料排水(shui)(shui)板濾(lv)水(shui)(shui)層有組織收集積水(shui)(shui),但(dan)必須進行專項節點設(she)計(ji)。c.當地下室(shi)頂(ding)板被變(bian)形縫(feng)分(fen)隔時,變(bian)形縫(feng)應作(zuo)為種植(zhi)分(fen)區(qu)邊界,不得跨縫(feng)種植(zhi)。d.當地下室(shi)頂(ding)板上(shang)無(wu)覆(fu)土(tu)時,可(ke)在卷(juan)材防(fang)水(shui)(shui)的(de)(de)剛性(xing)保(bao)護層上(shang)直接做(zuo)飾面層。e.也可(ke)采用(yong)單(dan)層防(fang)水(shui)(shui)做(zuo)法。
新型泡沫混凝土公司在鋪貼高分子防水卷材時,一般都會在施工前將驗收合格的基層清理干凈,并測定基層干燥度是否符合施工要求,按設計要求及卷材鋪貼方向、搭接寬度放線定位,并在基層彈上粉線;然后在涂刷膠粘劑。那么如何使用平鋪法鋪貼高分子卷材呢?1、將高分子防水卷材拆去包裝紙后開卷鋪在基層上并對準粉線;2、先鋪離上料點遠處,后鋪近處;3、卷材與基層表面涂刷膠粘劑,涂刷方法有(1)條粘法: 將試鋪好的卷材在1/3幅寬沿長邊對折,用油刷沿長向分別往卷材、基層表面均勻涂刷膠粘劑,呈長條形,寬度為150mm;(2)東興市泡沫混凝土公司滿粘法:將卷材鋪展(zhan)在干凈的(de)基(ji)層(ceng)(ceng)上,將卷材沿1/2幅寬對折(zhe),用長把滾刷蘸基(ji)層(ceng)(ceng)膠粘劑滾涂(tu)卷材粘結面(mian)與基(ji)層(ceng)(ceng)表面(mian),應留(liu)出搭接部位不(bu)涂(tu)膠,長短邊部位空(kong)出80mm,作(zuo)搭接用。
混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)澆筑正值7~8月(yue)份高(gao)溫季(ji)節,易造(zao)成(cheng)混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)坍(tan)落度(du)損失加大(da),降低混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)工(gong)作度(du)方面(mian)的(de)要(yao)求,加之可(ke)能(neng)出現的(de)運輸(shu)途中(zhong)堵(du)車或施(shi)(shi)工(gong)中(zhong)出現臨時(shi)(shi)(shi)(shi)需處理的(de)問(wen)題(ti),使澆搗速度(du)減(jian)(jian)(jian)(jian)緩,延(yan)誤(wu)了混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)的(de)入模時(shi)(shi)(shi)(shi)間,因時(shi)(shi)(shi)(shi)間延(yan)長造(zao)成(cheng)混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)坍(tan)落度(du)損失加大(da),致使不(bu)能(neng)滿足泵送(song)要(yao)求,此(ci)時(shi)(shi)(shi)(shi)應嚴禁加入生水(shui)(shui)(shui)(shui),而(er)應采取二次摻(chan)(chan)(chan)少(shao)量(liang)的(de)FDN2I減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)劑(ji)的(de)后(hou)(hou)摻(chan)(chan)(chan)法(fa)(fa),補(bu)償和(he)恢復混(hun)(hun)(hun)凝(ning)(ning)土(tu)(tu)的(de)坍(tan)落度(du)損失。在配(pei)合比中(zhong)FDN2I減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)劑(ji)量(liang)為0.8%,地般該減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)劑(ji)的(de)摻(chan)(chan)(chan)量(liang)地高(gao)為1%,在后(hou)(hou)摻(chan)(chan)(chan)減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)劑(ji)時(shi)(shi)(shi)(shi)只考慮在0.2%以(yi)內。后(hou)(hou)摻(chan)(chan)(chan)法(fa)(fa)比先摻(chan)(chan)(chan)法(fa)(fa)或同摻(chan)(chan)(chan)法(fa)(fa)在相(xiang)同摻(chan)(chan)(chan)量(liang)下減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)作用顯著提(ti)高(gao),是能(neng)補(bu)償坍(tan)落度(du)損失的(de)。但(dan)應注意凡后(hou)(hou)摻(chan)(chan)(chan)減(jian)(jian)(jian)(jian)水(shui)(shui)(shui)(shui)劑(ji)的(de)運輸(shu)車,應快速攪(jiao)拌30轉或1秒以(yi)上。其摻(chan)(chan)(chan)量(liang)和(he)攪(jiao)拌時(shi)(shi)(shi)(shi)間由專(zhuan)人負責(ze)實施(shi)(shi)。