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大家(jia)都(dou)知道,房子漏(lou)水特別是(shi)地下(xia)(xia)室漏(lou)水是(shi)一件(jian)麻煩(fan)的(de)(de)(de)事情(qing),地下(xia)(xia)室剛性(xing)防(fang)水方面,應提(ti)高混(hun)凝(ning)土(tu)的(de)(de)(de)施(shi)工質(zhi)量以及減少混(hun)凝(ning)土(tu)的(de)(de)(de)開裂(lie)情(qing)況,以下(xia)(xia)是(shi)顧得(de)防(fang)水整理的(de)(de)(de)一些提(ti)高質(zhi)量減少開裂(lie)的(de)(de)(de)具體施(shi)工技術。模(mo)板(ban)工程施(shi)工過程中,首先,要(yao)對(dui)重要(yao)構件(jian)的(de)(de)(de)模(mo)板(ban)和支(zhi)撐進(jin)行計算(suan),確保模(mo)板(ban)體系具有足夠(gou)的(de)(de)(de)強(qiang)度(du)和剛度(du):其(qi)次(ci),模(mo)板(ban)加工時(shi)要(yao)控制(zhi)模(mo)板(ban)尺寸和因周(zhou)轉次(ci)數過多而(er)出現損壞(huai)的(de)(de)(de)模(mo)板(ban):再次(ci),模(mo)板(ban)安裝時(shi)要(yao)注(zhu)意安裝順序、大跨度(du)構件(jian)的(de)(de)(de)起(qi)拱(gong)、陰陽角(jiao)部位的(de)(de)(de)支(zhi)護(hu):最后,模(mo)板(ban)拆除時(shi)要(yao)注(zhu)意混(hun)凝(ning)土(tu)的(de)(de)(de)強(qiang)度(du)要(yao)達到相(xiang)應要(yao)求方可拆除。
柳州市泡沫混凝土公司混凝土澆筑正值7~8月份高溫季節,易造成混凝土坍落度損失加大,降低混凝土工作度方面的要求,加之可能出現的運輸途中堵車或施工中出現臨時需處理的問題,使澆搗速度減緩,延誤了混凝土的入模時間,因時間延長造成混凝土坍落度損失加大,致使不能滿足泵送要求,此時應嚴禁加入生水,而應采取二次摻少量的FDN2I減水劑的后摻法,補償和恢復混凝土的坍落度損失。正規泡沫混凝土公司在(zai)(zai)配合比中(zhong)FDN2I減水(shui)(shui)劑量(liang)為0.8%,地(di)般該減水(shui)(shui)劑的(de)摻(chan)(chan)量(liang)地(di)高為1%,在(zai)(zai)后摻(chan)(chan)減水(shui)(shui)劑時只(zhi)考慮在(zai)(zai)0.2%以(yi)內。后摻(chan)(chan)法比先摻(chan)(chan)法或同(tong)摻(chan)(chan)法在(zai)(zai)相同(tong)摻(chan)(chan)量(liang)下減水(shui)(shui)作用顯(xian)著(zhu)提高,是能補(bu)償坍落度損失的(de)。但應注(zhu)意凡后摻(chan)(chan)減水(shui)(shui)劑的(de)運輸車,應快速攪拌(ban)30轉或1秒以(yi)上。其摻(chan)(chan)量(liang)和攪拌(ban)時間由(you)專人負責(ze)實(shi)施。
施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)圖紙(zhi)的(de)(de)設計(ji)是整個(ge)(ge)工(gong)(gong)(gong)程的(de)(de)基(ji)礎(chu),如果在設計(ji)方(fang)(fang)案(an)(an)的(de)(de)制(zhi)定(ding)階(jie)段就存(cun)在不足(zu)或者出(chu)現(xian)實際施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)數值(zhi)發生偏差等問題(ti)(ti),就會直(zhi)接導致施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)問題(ti)(ti)的(de)(de)發生,對整個(ge)(ge)建筑設計(ji)過程都造成嚴重的(de)(de)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)影響。提示建筑施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)的(de)(de)開展必(bi)須要對房(fang)屋滲(shen)漏問題(ti)(ti)進(jin)(jin)(jin)行(xing)(xing)(xing)全面考(kao)慮(lv),將可(ke)(ke)能(neng)出(chu)現(xian)在施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)環(huan)(huan)節中(zhong)的(de)(de)滲(shen)漏問題(ti)(ti),在設計(ji)方(fang)(fang)案(an)(an)的(de)(de)制(zhi)定(ding)過程中(zhong)避免。在進(jin)(jin)(jin)行(xing)(xing)(xing)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)方(fang)(fang)案(an)(an)的(de)(de)制(zhi)定(ding)中(zhong),必(bi)須要嚴格按照國(guo)家相關建設規(gui)定(ding)來進(jin)(jin)(jin)行(xing)(xing)(xing),保證所(suo)采用(yong)的(de)(de)設計(ji)方(fang)(fang)案(an)(an)符合(he)國(guo)家標(biao)準,同時設計(ji)單位要在施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)設計(ji)前,對建筑工(gong)(gong)(gong)程所(suo)處的(de)(de)環(huan)(huan)境進(jin)(jin)(jin)行(xing)(xing)(xing)詳細的(de)(de)分析(xi),了解施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)所(suo)在地可(ke)(ke)能(neng)出(chu)現(xian)的(de)(de)氣(qi)候狀(zhuang)況,對可(ke)(ke)能(neng)出(chu)現(xian)的(de)(de)氣(qi)候問題(ti)(ti)制(zhi)定(ding)好(hao)預(yu)防方(fang)(fang)案(an)(an),保證施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)人員的(de)(de)順利施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)。
在(zai)墻板(ban)(ban)(ban)(ban)(ban)混(hun)(hun)凝土(tu)配合(he)比(bi)設計試配,確定設計配合(he)比(bi)階段(duan),采(cai)取(qu)了降低(di)水灰(hui)比(bi)的(de)(de)(de)措(cuo)施。底板(ban)(ban)(ban)(ban)(ban)與墻板(ban)(ban)(ban)(ban)(ban)同為(wei)(wei)C30P12,而(er)底板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)水灰(hui)比(bi)為(wei)(wei)0.47。而(er)墻板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)水灰(hui)比(bi)為(wei)(wei)0.41,混(hun)(hun)凝土(tu)的(de)(de)(de)坍落(luo)度(du)指(zhi)標底板(ban)(ban)(ban)(ban)(ban)為(wei)(wei)18~20厘米,墻板(ban)(ban)(ban)(ban)(ban)坍落(luo)度(du)指(zhi)標控(kong)制在(zai)14~16厘米。采(cai)取(qu)該措(cuo)施的(de)(de)(de)目(mu)的(de)(de)(de)在(zai)于(yu)減少用水量、降低(di)混(hun)(hun)凝土(tu)的(de)(de)(de)收縮。在(zai)混(hun)(hun)凝土(tu)澆(jiao)筑階段(duan),采(cai)用二次振搗(dao)的(de)(de)(de)工藝,即在(zai)混(hun)(hun)凝土(tu)初凝前進(jin)行二次振搗(dao)。避(bi)免混(hun)(hun)凝土(tu)因(yin)沉降收縮而(er)引起的(de)(de)(de)裂縫。提醒這些(xie)措(cuo)施的(de)(de)(de)實施對控(kong)制墻體裂縫的(de)(de)(de)出(chu)現是非常有必要的(de)(de)(de)。在(zai)澆(jiao)筑過(guo)程中其他方面的(de)(de)(de)控(kong)制均與底板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)控(kong)制措(cuo)施方法相同。