2019-08-09
堅實平(ping)整(zheng)(平(ping)整(zheng)度(du)(du)(du)(du)(du)要求:3m直尺(chi)誤差不大于(yu)(yu)3mm),有一定排水(shui)坡度(du)(du)(du)(du)(du)(一般60/00,必須(xu)保(bao)證泄水(shui)),強度(du)(du)(du)(du)(du)達建(jian)筑混凝土標準(zhun)C25強度(du)(du)(du)(du)(du),澆制后保(bao)水(shui)養護(hu)不少(shao)于(yu)(yu)7天,整(zheng)體固化養護(hu)期不少(shao)于(yu)(yu)28天(保(bao)證水(shui)泥(ni)的固化時(shi)間(jian)(jian),讓水(shui)泥(ni)在固化過程中產(chan)生的白色(se)粉末完全(quan)析(xi)出于(yu)(yu)基礎(chu)表面)。新水(shui)泥(ni)基礎(chu)澆制后必須(xu)切(qie)(qie)割(ge)(ge)合理(li)溫(wen)度(du)(du)(du)(du)(du)伸縮縫,原則以不大于(yu)(yu)6x10m為一方塊(kuai)(kuai)切(qie)(qie)割(ge)(ge),若分板(ban)(ban)塊(kuai)(kuai)澆制的板(ban)(ban)塊(kuai)(kuai)間(jian)(jian)必須(xu)切(qie)(qie)割(ge)(ge)溫(wen)度(du)(du)(du)(du)(du)縫,切(qie)(qie)割(ge)(ge)溫(wen)度(du)(du)(du)(du)(du)縫要求寬為6~8mm,深度(du)(du)(du)(du)(du)不少(shao)于(yu)(yu)30mm,(保(bao)證基礎(chu)熱脹冷(leng)縮能集(ji)中在溫(wen)度(du)(du)(du)(du)(du)縫中變化,不回導致基礎(chu)其它地方開裂)。
a、磨縫(feng):把溫度(du)(du)縫(feng)兩(liang)邊的(de)(de)(de)基(ji)面(mian)(mian)各寬40~50mm磨成(cheng)(cheng)斜口深(shen)3mm(如圖(1)示),使溫度(du)(du)縫(feng)表面(mian)(mian)成(cheng)(cheng)“V”型,(各40~50寬是提高填(tian)縫(feng)膠與基(ji)面(mian)(mian)的(de)(de)(de)粘接面(mian)(mian)積,增(zeng)加其粘接力,3mm深(shen)是保證填(tian)縫(feng)膠厚度(du)(du)而(er)不(bu)(bu)占用彈性層的(de)(de)(de)位置,保證整體的(de)(de)(de)緩沖性好,使基(ji)礎的(de)(de)(de)熱脹冷縮不(bu)(bu)影響硅PU表面(mian)(mian))。
d 、填(tian)(tian)縫:底涂(tu)固化后,同填(tian)(tian)縫膠加10%-20%稀(xi)釋劑(二甲(jia)苯或醋酸乙(yi)酯)稀(xi)釋后用(yong)(yong)毛刷涂(tu)刷于溫度縫內兩側,然后填(tian)(tian)縫泡(pao)(pao)(pao)棉對折輕擠滿溫度縫(填(tian)(tian)縫泡(pao)(pao)(pao)棉是可拉伸、可壓縮的(de),有(you)效減少基礎熱脹冷(leng)縮變化影響表面外(wai)觀)露(lu)出部分填(tian)(tian)縫泡(pao)(pao)(pao)棉用(yong)(yong)手提磨機磨平,再(zai)用(yong)(yong)填(tian)(tian)縫膠分兩道(dao)以上把“V”型槽填(tian)(tian)平(一次填(tian)(tian)的(de)厚(hou)度不大于1.0mm,太厚(hou)會發泡(pao)(pao)(pao),影響填(tian)(tian)縫膠的(de)性(xing)能)。(如圖(2)示)
三、硅PU面層施工:(彈性層→加彈層→面層→劃線)
1、彈性層:d、場地鋪設后需保持(chi)5天(tian)以上才(cai)能投入使(shi)用。
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