分類:行業新聞(wen)發布時(shi)間(jian):2018/04/28
混凝土拖泵在(zai)混(hun)(hun)凝土(tu)泵送中,完全(quan)(quan)是一(yi)(yi)高(gao)效、泵送一(yi)(yi)體全(quan)(quan)自(zi)動被人(ren)熟(shu)知,但是混(hun)(hun)凝土(tu)在(zai)泵送中,許(xu)多人(ren)不(bu)(bu)明(ming)白為什么在(zai)泵送混(hun)(hun)凝土(tu)時,操作拖泵都不(bu)(bu)一(yi)(yi)樣,其實是因為混(hun)(hun)凝土(tu)拖泵澆筑(zhu)不(bu)(bu)同強度混(hun)(hun)凝土(tu)產生效果也不(bu)(bu)一(yi)(yi)樣,而今(jin)天我(wo)們就來(lai)了解一(yi)(yi)下混(hun)(hun)凝土(tu)拖泵澆筑(zhu)不(bu)(bu)同強度混(hun)(hun)凝土(tu)時,我(wo)們應該注意哪些要素呢?
混(hun)凝(ning)(ning)(ning)土拖泵澆(jiao)筑不同強(qiang)(qiang)度等(deng)級混(hun)凝(ning)(ning)(ning)土同時澆(jiao)筑時,要遵循一個(ge)原則防止低(di)強(qiang)(qiang)度等(deng)級混(hun)凝(ning)(ning)(ning)土流入高強(qiang)(qiang)度等(deng)級混(hun)凝(ning)(ning)(ning)土部位,交(jiao)接處振搗時,先澆(jiao)高強(qiang)(qiang)度等(deng)級混(hun)凝(ning)(ning)(ning)土,后澆(jiao)相鄰處較(jiao)低(di)強(qiang)(qiang)度等(deng)級混(hun)凝(ning)(ning)(ning)土。
地下室及樓層梁板澆(jiao)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)時,筒體(ti)墻體(ti)部(bu)位及框架柱柱心部(bu)位高強(qiang)(qiang)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)采用(yong)塔吊(diao)(diao)及吊(diao)(diao)斗入(ru)(ru)(ru)模,樓板混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)用(yong)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)輸送泵入(ru)(ru)(ru)模。如果墻海有加(jia)強(qiang)(qiang)帶(dai),在加(jia)強(qiang)(qiang)帶(dai)兩(liang)側加(jia)兩(liang)層鋼(gang)絲網,豎向用(yong)鋼(gang)筋進(jin)行封堵,在鋼(gang)絲網外側,當剪力(li)墻混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)澆(jiao)筑(zhu)到(dao)加(jia)強(qiang)(qiang)帶(dai)附(fu)(fu)近(jin)(必須保證混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)沒(mei)流淌到(dao)加(jia)強(qiang)(qiang)帶(dai)內),即(ji)停止(zhi)普通(tong)剪力(li)墻混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)澆(jiao)筑(zhu),先進(jin)行加(jia)強(qiang)(qiang)帶(dai)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)施工,加(jia)強(qiang)(qiang)帶(dai)按500㎜厚度(du)分層澆(jiao)筑(zhu),混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)澆(jiao)筑(zhu)采用(yong)吊(diao)(diao)斗吊(diao)(diao)入(ru)(ru)(ru)基(ji)槽內。先振搗加(jia)強(qiang)(qiang)帶(dai)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu),后振搗加(jia)強(qiang)(qiang)帶(dai)附(fu)(fu)近(jin)普通(tong)區(qu)域(yu)(yu)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu),防止(zhi)普通(tong)混(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)進(jin)入(ru)(ru)(ru)加(jia)強(qiang)(qiang)帶(dai)區(qu)域(yu)(yu)。
混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)澆(jiao)筑(zhu)時(shi),要(yao)控制不(bu)(bu)同標(biao)(biao)號(hao)混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)之(zhi)間(jian)(jian)的(de)高差,需(xu)有(you)專(zhuan)人監(jian)控輸(shu)送泵運(yun)行情況。根據經驗,一方混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)地泵需(xu)打26下,在(zai)高標(biao)(biao)號(hao)混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)和低(di)標(biao)(biao)號(hao)混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)同時(shi)澆(jiao)筑(zhu)時(shi),要(yao)嚴(yan)格控制兩者混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)的(de)澆(jiao)筑(zhu)速(su)度保證兩者步調一致,在(zai)高標(biao)(biao)號(hao)混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)澆(jiao)筑(zhu)至(zhi)開始低(di)標(biao)(biao)號(hao)混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)澆(jiao)筑(zhu)間(jian)(jian)隔時(shi)間(jian)(jian)不(bu)(bu)得(de)大于混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)的(de)初(chu)凝(ning)(ning)(ning)(ning)時(shi)間(jian)(jian),一般按10小時(shi)控制。混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)的(de)流淌距(ju)離,則(ze)根據混(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)土(tu)(tu)坍落度加以控制。
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