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混合型塑膠面層施工方法:
基礎(chu)達到要求后,進行塑(su)膠(jiao)(jiao)面(mian)層(ceng)的(de)(de)攤鋪(pu)。為增強塑(su)膠(jiao)(jiao)面(mian)層(ceng)與基礎(chu)的(de)(de)黏(nian)接性、更好(hao)的(de)(de)控(kong)制(zhi)場(chang)地的(de)(de)坡度、平整度,確保鋪(pu)設的(de)(de)質量,我(wo)公(gong)司采(cai)用二次分層(ceng)施工的(de)(de)工序(xu)進行鋪(pu)設。整個場(chang)地塑(su)膠(jiao)(jiao)面(mian)層(ceng)的(de)(de)鋪(pu)設嚴格按(an)照設計要求、塑(su)膠(jiao)(jiao)跑(pao)道、輔助區和半(ban)圓區嚴格按(an)國家標(biao)準GB/T14833-93的(de)(de)要求進行施工。
根(gen)據本(ben)工(gong)(gong)程實(shi)際情況,塑(su)膠(jiao)攤鋪遵循“先(xian)里后外(wai)“的施工(gong)(gong)工(gong)(gong)序(xu),先(xian)做兩半圓,再做跑(pao)道,后做輔(fu)助區。
1、塑膠面層鋪設前的施工準備
1.1、測量放樣、確(que)定(ding)施工范圍(wei)
施(shi)(shi)工(gong)隊進場(chang)(chang)后(hou),用經過校(xiao)準(zhun)后(hou)的經緯儀對運(yun)動(dong)場(chang)(chang)的位置進行放樣,復測(ce)場(chang)(chang)地的水準(zhun)點及標高,確定運(yun)動(dong)場(chang)(chang)的塑膠鋪裝(zhuang)施(shi)(shi)工(gong)范圍(wei)。
1.2、基礎層的復驗及找(zhao)平(ping)
按照場(chang)(chang)(chang)地設(she)計要(yao)求(qiu)和(he)塑膠鋪設(she)工藝對場(chang)(chang)(chang)地基礎的要(yao)求(qiu),對該場(chang)(chang)(chang)地基礎進行復(fu)核(he),包括測量場(chang)(chang)(chang)地平(ping)整度、坡度是否符合(he)室外運動場(chang)(chang)(chang)的規(gui)定,同時在鋪設(she)塑膠面層(ceng)之前,基礎必(bi)須有足(zu)夠的保(bao)養(yang)期。
檢測基礎層的平(ping)整(zheng)度(du)(du)采用3m直尺檢測基礎層的最大凹陷程度(du)(du)。3m直尺的尺長精度(du)(du)為(wei)±3mm,尺的底面(mian)平(ping)直無缺陷,0-25mm塞尺,塞尺精度(du)(du)為(wei)±1mm。
將3m直尺(chi)輕放于(yu)任何相鄰兩(liang)點(dian)(dian)之間,用塞尺(chi)測(ce)量(liang)最大局部凹陷不超過3mm,即為合(he)(he)格(ge)(ge)點(dian)(dian)。每(mei)100㎡內測(ce)量(liang)不少于(yu)5個(ge)測(ce)量(liang)點(dian)(dian)數(shu)。合(he)(he)格(ge)(ge)點(dian)(dian)數(shu)與總測(ce)量(liang)點(dian)(dian)數(shu)之比即為平整度合(he)(he)格(ge)(ge)率。合(he)(he)格(ge)(ge)率應不低于(yu)85% 。
基礎(chu)若(ruo)有油漬,脆(cui)化處或凸處應鏟除或磨除,凹處用同種材(cai)料(liao)進行補(bu)(bu)平,若(ruo)是裂縫(feng)應用材(cai)料(liao)填補(bu)(bu),若(ruo)裂縫(feng)較細小(xiao)時(shi)應加寬(kuan)加深后再填補(bu)(bu)。
基(ji)礎補(bu)平后,清除(chu)施工(gong)(gong)面的灰層和雜(za)物,用水(shui)將基(ji)礎沖洗干凈,使基(ji)礎表面無(wu)油、無(wu)灰、干燥(zao),才(cai)能進行塑膠面層的施工(gong)(gong)。
1.3、測量(liang)地面(mian)含水率
晴天(tian)時用(yong)透明膠布以膠帶貼(tie)膠布四周于地面,待(dai)4小時后觀察,若透明膠布內有結露現象則不可施工,或以濕度測定儀檢查含水率(lv)低于8%以下方可施工。
1.4、測量空氣濕度
用通風干濕表測量空氣(qi)濕度(du),空氣(qi)濕度(du)應≤85%,方能施工(gong)。
1.5、施工材料、施工設備(bei)準備(bei)
塑膠半成品(pin)材(cai)料(liao)(liao)(liao),按照所報(bao)材(cai)料(liao)(liao)(liao)計劃一次性(xing)發往施(shi)工現(xian)場(chang),出發和(he)接收材(cai)料(liao)(liao)(liao)前均應(ying)(ying)清點材(cai)料(liao)(liao)(liao)的(de)品(pin)種及數(shu)量,材(cai)料(liao)(liao)(liao)包裝(zhuang)若有破損,應(ying)(ying)及時(shi)處(chu)理以(yi)免浪費,由于原料(liao)(liao)(liao)的(de)化學(xue)特性(xing),塑膠材(cai)料(liao)(liao)(liao)包裝(zhuang)桶(tong)一律側倒(dao)放,防止(zhi)進(jin)水,現(xian)場(chang)材(cai)料(liao)(liao)(liao)員和(he)質(zhi)檢員嚴(yan)格對接收的(de)材(cai)料(liao)(liao)(liao)進(jin)行檢驗,如有不合(he)格材(cai)料(liao)(liao)(liao),立即返回(hui),不得(de)接收使(shi)用。
檢測(ce)了解鋪(pu)設(she)現(xian)(xian)場的溫度(du)(du)和濕度(du)(du),在鋪(pu)設(she)施工現(xian)(xian)場采用三夾板進(jin)行小試(shi),檢驗材(cai)料比(bi)例是(shi)否(fou)嚴格按配比(bi)進(jin)行混(hun)合的。工程(cheng)所用材(cai)料分(fen)別按批(pi)(pi)號排(pai)序,然后(hou)取(qu)樣根(gen)據(ju)現(xian)(xian)場環境(jing)條件分(fen)別進(jin)行成膠(jiao)(jiao)試(shi)驗以及拉(la)絲成膠(jiao)(jiao)試(shi)驗。如果發(fa)現(xian)(xian)某批(pi)(pi)材(cai)料成膠(jiao)(jiao)速(su)度(du)(du)過慢,則調(diao)節(jie)催化劑的用量來調(diao)節(jie)成膠(jiao)(jiao)速(su)度(du)(du)。
提前檢查塑膠鋪設所需(xu)的機(ji)械(xie)設備,使投(tou)入的機(ji)械(xie)設備能(neng)按需(xu)要進行正(zheng)常運轉,及時進行保養。
1.6、塑膠(jiao)鋪設(she)前的施工注意要點(dian)
根據(ju)塑膠跑道施(shi)(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)的(de)要求,施(shi)(shi)工(gong)(gong)(gong)(gong)時溫度要在10℃以(yi)(yi)上、干燥、低風條件下施(shi)(shi)工(gong)(gong)(gong)(gong),雨前(qian)24小時不可以(yi)(yi)施(shi)(shi)工(gong)(gong)(gong)(gong),確保工(gong)(gong)(gong)(gong)程質量(liang)。故施(shi)(shi)工(gong)(gong)(gong)(gong)現場派專(zhuan)人隨時了解氣(qi)象信息(xi),保證(zheng)施(shi)(shi)工(gong)(gong)(gong)(gong)前(qian)24小時做(zuo)好(hao)氣(qi)象調(diao)查,制定施(shi)(shi)工(gong)(gong)(gong)(gong)作息(xi)時間,做(zuo)好(hao)相(xiang)應的(de)準(zhun)備,保證(zheng)工(gong)(gong)(gong)(gong)程施(shi)(shi)工(gong)(gong)(gong)(gong)順利進行,保質按(an)期(qi)完成。
施(shi)工時突(tu)發(fa)停電,攪(jiao)拌桶中(zhong)材(cai)料還未攪(jiao)拌均勻,必須作(zuo)廢(fei)料處理(li)不得使用(yong)。施(shi)工用(yong)的(de)原(yuan)材(cai)料,顆(ke)粒、膠水等經監(jian)理(li)見證(zheng)隨機(ji)抽樣(yang),須經過(guo)相關部門進行(xing)檢測,并出具檢測報告,合格后方(fang)可使用(yong)。
聚氨酯A、B組分配比(bi)為1:4,黑(hei)膠粒(li)配比(bi)不(bu)超(chao)過總量(liang)的25%,面層顆粒(li)采用(yong)EPDM膠粒(li),粒(li)徑為3-5mm。
2、攤鋪塑膠底層
在(zai)塑膠底層攤(tan)鋪前, 用(yong)專(zhuan)用(yong)膠水在(zai)瀝青混凝土基(ji)礎(chu)上均勻的(de)涂刷一遍,以(yi)增強基(ji)礎(chu)與塑膠面層的(de)粘接性。
2.1、底層施工(gong)流程(cheng)
攪(jiao)料(T-301AB料膠水、催化(hua)劑、黑顆粒)→攤鋪、刮(gua)平、修邊、包邊→常溫(wen)固化(hua)、檢測補平。
底(di)膠(jiao)攤鋪前,為保(bao)證區分不同顏色的部(bu)位和已鋪完(wan)面層的干凈,測量員在與施(shi)(shi)工(gong)(gong)部(bu)位連接(jie)處四周,用5cm寬的透明膠(jiao)帶紙(zhi)在塑膠(jiao)面層邊上貼好(hao),待塑膠(jiao)面層施(shi)(shi)工(gong)(gong)完(wan)后,立(li)即(ji)將膠(jiao)帶紙(zhi)小心的清(qing)除。施(shi)(shi)工(gong)(gong)前現(xian)場作好(hao)樣板供學校參考,確定(ding)材料顏色后方可進(jin)行(xing)施(shi)(shi)工(gong)(gong)。
2.2、攪料
選料: 嚴格按照公司技術部下發的工藝配(pei)(pei)方進行配(pei)(pei)比,配(pei)(pei)比系(xi)數為T-301AB膠水(shui)10.5kg/㎡,黑顆粒3kg/㎡。
攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban):開(kai)始攪(jiao)(jiao)(jiao)(jiao)料(liao)(liao)前(qian),在(zai)材(cai)(cai)料(liao)(liao)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)場(chang)所鋪設膠(jiao)(jiao)布或塑料(liao)(liao)布,避免玷污地面,損(sun)(sun)壞施工(gong)品質及(ji)(ji)影(ying)響環境清(qing)潔。攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)桶的容(rong)量應是攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)量的1.5-2倍,使用前(qian)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)桶保持干(gan)燥及(ji)(ji)清(qing)潔。攪(jiao)(jiao)(jiao)(jiao)料(liao)(liao)人員將材(cai)(cai)料(liao)(liao)按比(bi)例(li)(li)倒(dao)入(ru)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)桶中(zhong)混(hun)合(he)(he),材(cai)(cai)料(liao)(liao)倒(dao)入(ru)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)桶時(shi),應向桶中(zhong)央直接倒(dao)入(ru),切(qie)勿沿著桶邊倒(dao)入(ru),以免附著桶邊的材(cai)(cai)料(liao)(liao)無法充(chong)分(fen)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)。材(cai)(cai)料(liao)(liao)如附于(yu)桶邊或不慎粘附其它地方應隨(sui)時(shi)以刮(gua)刀刮(gua)干(gan)凈(jing)。將倒(dao)入(ru)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)桶中(zhong)的料(liao)(liao)用專業(ye)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)機攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)均勻(yun)(yun)后(hou),加(jia)入(ru)適量的催(cui)化劑再進行(xing)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban),最(zui)后(hou)按比(bi)例(li)(li)加(jia)入(ru)黑顆粒攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)均勻(yun)(yun)。注:加(jia)料(liao)(liao)的時(shi)候必須邊攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)邊均勻(yun)(yun)緩慢的加(jia)入(ru)需添加(jia)的原料(liao)(liao),避免破(po)壞已(yi)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)均勻(yun)(yun)混(hun)合(he)(he)料(liao)(liao)的內部組成結構,以保證(zheng)在(zai)塑膠(jiao)(jiao)攤鋪過程(cheng)中(zhong)不因此而起(qi)泡、出(chu)現局(ju)部色差,影(ying)響工(gong)程(cheng)質量。混(hun)合(he)(he)料(liao)(liao)進行(xing)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)時(shi),一定要攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)(ban)均勻(yun)(yun),保證(zheng)各種(zhong)材(cai)(cai)料(liao)(liao)能充(chong)分(fen)反應,每(mei)次拌(ban)(ban)(ban)(ban)料(liao)(liao)應保證(zheng)在(zai)相同的條件下進行(xing),才能保證(zheng)合(he)(he)成后(hou)塑膠(jiao)(jiao)面層(ceng)無氣泡、裂痕現象(xiang),接縫平整(zheng),無明(ming)顯痕跡,表面色澤均勻(yun)(yun)、耐(nai)久、均勻(yun)(yun)一致。運料(liao)(liao)工(gong)倒(dao)料(liao)(liao)時(shi),應將容(rong)器內余(yu)料(liao)(liao)刮(gua)除干(gan)凈(jing),才能保證(zheng)每(mei)次倒(dao)入(ru)的預聚體等混(hun)合(he)(he)材(cai)(cai)料(liao)(liao),比(bi)例(li)(li)符合(he)(he)要求(qiu)及(ji)(ji)材(cai)(cai)料(liao)(liao)不會浪費損(sun)(sun)失。