導語：混凝土在軌道交通工程(cheng)的(de)應(ying)用一文來(lai)源于網友上傳(chuan)，不代(dai)表本站觀點，若(ruo)需要原創文章可咨(zi)詢(xun)客服老師，歡迎參(can)考(kao)。

【摘要】基于南寧市軌道交通主體結構要求，針對軌道交通工程中高性能混凝土質量控制要求，通過原材料質量控制、機制砂混凝土配合比及耐久性能檢測、高性能混凝土工程評價等介紹機制砂高性能混凝土在南寧軌道交通工程的應用情況。以(yi)南(nan)寧市軌道(dao)交通5號線新秀(xiu)公園站C35P8混凝(ning)(ning)(ning)土為例，通過原材料、混凝(ning)(ning)(ning)土性(xing)能、制備、配(pei)合比(bi)、施工(gong)五個單方面的評價及(ji)相關(guan)檢測表明：各項技術指標滿足高性(xing)能混凝(ning)(ning)(ning)土設計、生產及(ji)工(gong)程評價類別的要求。

【關鍵詞】高性能混凝土(tu)；管片；主體(ti)結構(gou)；附(fu)屬工程

受環境保護、原材料(liao)(liao)價格(ge)上漲、河(he)砂(sha)(sha)(sha)(sha)(sha)(sha)資源短缺(que)和材料(liao)(liao)運輸等因素影響[1]，南寧(ning)(ning)市混凝(ning)(ning)(ning)土(tu)(tu)企業(ye)已基本采(cai)用(yong)機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)代(dai)替河(he)砂(sha)(sha)(sha)(sha)(sha)(sha)生(sheng)產(chan)高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)。與河(he)砂(sha)(sha)(sha)(sha)(sha)(sha)不同的(de)是，機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)顆(ke)粒(li)(li)表明粗(cu)糙、棱(leng)角多、針片(pian)狀顆(ke)粒(li)(li)含量高(gao)(gao)(gao)、石粉含量高(gao)(gao)(gao)，機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)制(zhi)備高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)易出現離(li)析泌水、流動性(xing)差(cha)、坍(tan)落度(du)(du)損失大等一系(xi)列問題(ti)[2]。為(wei)改善(shan)機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)混凝(ning)(ning)(ning)土(tu)(tu)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)，常用(yong)的(de)做(zuo)法是石粉含量較(jiao)(jiao)(jiao)多的(de)、細(xi)度(du)(du)模(mo)數較(jiao)(jiao)(jiao)低(di)的(de)碎石機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)與細(xi)度(du)(du)模(mo)數較(jiao)(jiao)(jiao)高(gao)(gao)(gao)、含有圓(yuan)顆(ke)粒(li)(li)較(jiao)(jiao)(jiao)多的(de)卵石機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)混合(he)搭配使(shi)用(yong)。南寧(ning)(ning)軌道交通5號線于2017年9月開始建設，2021年12月28日建成(cheng)通車，是南寧(ning)(ning)首條采(cai)用(yong)全自動運行系(xi)統的(de)地鐵線路。其主(zhu)體結(jie)構(gou)設計使(shi)用(yong)年限為(wei)100年，結(jie)構(gou)構(gou)件包括框架(jia)梁、柱、頂底板、各(ge)層樓板、墻、樓扶梯(ti)、電梯(ti)井等，與土(tu)(tu)直接(jie)接(jie)觸結(jie)構(gou)均采(cai)用(yong)C35P8高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)。本文以南寧(ning)(ning)軌道交通5號線新秀(xiu)公園站標(biao)記為(wei)HPC-A-C35P8-180（P8）-Q-Ⅲ(1500)混凝(ning)(ning)(ning)土(tu)(tu)為(wei)例，依據(ju)JGJ/T385-2016開展高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)全過程評價工作，針對機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)原材料(liao)(liao)、混凝(ning)(ning)(ning)土(tu)(tu)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)要(yao)求，總結(jie)機(ji)(ji)(ji)(ji)制(zhi)砂(sha)(sha)(sha)(sha)(sha)(sha)高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)原材料(liao)(liao)選(xuan)材、配合(he)比試驗、高(gao)(gao)(gao)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)混凝(ning)(ning)(ning)土(tu)(tu)評價要(yao)點。

1混凝土服役環境

新(xin)秀公園站(zhan)(zhan)(zhan)是南(nan)寧軌道(dao)交(jiao)通5號線一期(qi)工程(cheng)從南(nan)道(dao)北的(de)第7個站(zhan)(zhan)(zhan)點，位于邕江低階地(di)(di)亞區（I1），距離邕江不(bu)足1km，地(di)(di)層(ceng)自(zi)上而下依(yi)次(ci)為(wei)填土(tu)層(ceng)、黏性(xing)土(tu)層(ceng)、圓(yuan)礫層(ceng)、古近系成巖(yan)(yan)(yan)的(de)泥(ni)巖(yan)(yan)(yan)、粉砂巖(yan)(yan)(yan)地(di)(di)層(ceng)和炭質(zhi)泥(ni)巖(yan)(yan)(yan)，地(di)(di)下水(shui)主要(yao)為(wei)上層(ceng)滯水(shui)、第四系松(song)散巖(yan)(yan)(yan)類孔(kong)隙水(shui)、碎屑(xie)巖(yan)(yan)(yan)類孔(kong)隙裂隙水(shui)，其中松(song)散巖(yan)(yan)(yan)類孔(kong)隙水(shui)層(ceng)、第四系松(song)散巖(yan)(yan)(yan)類孔(kong)隙水(shui)層(ceng)地(di)(di)下水(shui)量(liang)豐富，屬承壓水(shui)，與邕江有水(shui)力聯(lian)系。經對(dui)(dui)該(gai)站(zhan)(zhan)(zhan)巖(yan)(yan)(yan)土(tu)層(ceng)及(ji)地(di)(di)下水(shui)分析評價(jia)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)結(jie)(jie)構(gou)可(ke)知，該(gai)站(zhan)(zhan)(zhan)地(di)(di)下水(shui)對(dui)(dui)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)結(jie)(jie)構(gou)具有微(wei)弱腐(fu)蝕(shi)性(xing)，地(di)(di)下水(shui)對(dui)(dui)鋼(gang)筋混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)結(jie)(jie)構(gou)中的(de)鋼(gang)筋具有微(wei)腐(fu)蝕(shi)性(xing)，土(tu)對(dui)(dui)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)結(jie)(jie)構(gou)具有微(wei)弱腐(fu)蝕(shi)性(xing)，對(dui)(dui)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)結(jie)(jie)構(gou)中的(de)鋼(gang)筋及(ji)鋼(gang)結(jie)(jie)構(gou)具微(wei)腐(fu)蝕(shi)性(xing)。該(gai)站(zhan)(zhan)(zhan)點采用了HPC-A-C35P8-180（P8）-Q-Ⅲ(1500)、HPC-A-C35-180-Q-Ⅲ(1500)、HPC-A-C50-180-Q-Ⅲ(1500)三個標(biao)記的(de)高性(xing)能(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)。其中頂板、底板、結(jie)(jie)構(gou)側墻（壁柱、暗柱）、頂縱(zong)梁(liang)、低縱(zong)梁(liang)采用標(biao)記為(wei)HPC-A-C35P8-180（P8）-Q-Ⅲ(1500)的(de)高性(xing)能(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)土(tu)，其技術要(yao)求見(jian)表1。

2選用原材料要求及檢測

根(gen)據高性(xing)能(neng)混凝(ning)土(tu)(tu)技(ji)術要(yao)求，混凝(ning)土(tu)(tu)配制(zhi)時應選用優質水(shui)(shui)泥(ni)(ni)、性(xing)能(neng)良好的(de)(de)礦(kuang)(kuang)粉(fen)(fen)(fen)、粉(fen)(fen)(fen)煤(mei)(mei)灰等礦(kuang)(kuang)物(wu)摻(chan)合(he)料(liao)，并(bing)對混凝(ning)土(tu)(tu)中膠凝(ning)材料(liao)最高、最大用量(liang)(liang)(liang)做(zuo)出要(yao)求。原材料(liao)要(yao)求如下：⑴水(shui)(shui)泥(ni)(ni)：選用強度(du)不低于42.5的(de)(de)硅酸(suan)鹽(yan)水(shui)(shui)泥(ni)(ni)或普通硅酸(suan)鹽(yan)水(shui)(shui)泥(ni)(ni)，其堿含(han)(han)(han)量(liang)(liang)(liang)不低于0.60%，C3A含(han)(han)(han)量(liang)(liang)(liang)不超(chao)過8%，水(shui)(shui)泥(ni)(ni)比(bi)表面(mian)積(ji)不小于300m2/㎏，且不宜小于350m2/kg。⑵混凝(ning)土(tu)(tu)摻(chan)合(he)料(liao)：粉(fen)(fen)(fen)煤(mei)(mei)灰不低于Ⅱ級要(yao)求，礦(kuang)(kuang)粉(fen)(fen)(fen)不低于S95級要(yao)求。粉(fen)(fen)(fen)煤(mei)(mei)灰、礦(kuang)(kuang)粉(fen)(fen)(fen)等礦(kuang)(kuang)物(wu)摻(chan)合(he)料(liao)摻(chan)量(liang)(liang)(liang)一般控制(zhi)在20%。⑶機(ji)(ji)制(zhi)砂(sha)：細(xi)度(du)模數2.3～3.2，Ⅱ區顆粒(li)(li)級配，粒(li)(li)徑(jing)0.6mm累計篩余量(liang)(liang)(liang)41%～70%，粒(li)(li)徑(jing)0.15mm累計篩余量(liang)(liang)(liang)不小于90%。⑷粗(cu)骨料(liao)：氯離子(zi)含(han)(han)(han)量(liang)(liang)(liang)≤0.02%、含(han)(han)(han)泥(ni)(ni)量(liang)(liang)(liang)≤0.5%，泥(ni)(ni)塊含(han)(han)(han)量(liang)(liang)(liang)≤0.25%、吸(xi)水(shui)(shui)率≤1%、針片狀含(han)(han)(han)量(liang)(liang)(liang)≤8%。⑸混凝(ning)土(tu)(tu)拌合(he)物(wu)用水(shui)(shui)：氯離子(zi)含(han)(han)(han)量(liang)(liang)(liang)＜500mg/L的(de)(de)飲(yin)用水(shui)(shui)。項目(mu)選用潤(run)豐P.O42.5水(shui)(shui)泥(ni)(ni)、田東電(dian)廠F類Ⅱ級粉(fen)(fen)(fen)煤(mei)(mei)灰、源盛S95級礦(kuang)(kuang)粉(fen)(fen)(fen)、武鳴（5～31.5）mm碎(sui)(sui)石(shi)，機(ji)(ji)制(zhi)砂(sha)為扶綏碎(sui)(sui)石(shi)機(ji)(ji)制(zhi)砂(sha)、欽州卵石(shi)機(ji)(ji)制(zhi)砂(sha)按2:1比(bi)例混合(he)配制(zhi)的(de)(de)混合(he)砂(sha)，其檢測(ce)數據見表2。

3混凝土配合比試驗及檢測

該標記混凝(ning)土(tu)配合比分別在混凝(ning)土(tu)生(sheng)產企業試拌、試生(sheng)產及(ji)第三方檢測機(ji)構進(jin)行檢測，其試驗結果均滿足(zu)高(gao)性能混凝(ning)土(tu)設(she)計要求，結果見表3、表4。

4高性能混凝土評價

通(tong)過(guo)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)確(que)(que)定設(she)(she)(she)(she)計(ji)、生(sheng)(sheng)(sheng)產(chan)及(ji)使(shi)用(yong)的(de)(de)(de)(de)(de)(de)(de)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)是否滿(man)(man)(man)(man)足(zu)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)的(de)(de)(de)(de)(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)，成為高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)推廣(guang)(guang)應(ying)用(yong)的(de)(de)(de)(de)(de)(de)(de)最后(hou)一環。在(zai)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)及(ji)推廣(guang)(guang)應(ying)用(yong)方(fang)(fang)面(mian)，廣(guang)(guang)西雖然(ran)不(bu)是首批高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)推廣(guang)(guang)試(shi)點省(sheng)市，但廣(guang)(guang)西是首個(ge)開(kai)展高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)設(she)(she)(she)(she)計(ji)、生(sheng)(sheng)(sheng)產(chan)、工(gong)(gong)(gong)程(cheng)(cheng)全過(guo)程(cheng)(cheng)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)省(sheng)份。值得(de)一提(ti)的(de)(de)(de)(de)(de)(de)(de)是，廣(guang)(guang)西推廣(guang)(guang)應(ying)用(yong)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)由來已久(jiu)。2014年(nian)南寧市城鄉建(jian)設(she)(she)(she)(she)委(wei)員(yuan)(yuan)會(hui)(hui)發布《關于建(jian)設(she)(she)(she)(she)領域推廣(guang)(guang)應(ying)用(yong)相關技(ji)(ji)術(shu)的(de)(de)(de)(de)(de)(de)(de)通(tong)知》（南建(jian)質(zhi)安[2014]14號(hao)(hao)），規(gui)(gui)定軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)工(gong)(gong)(gong)程(cheng)(cheng)必(bi)(bi)須使(shi)用(yong)預拌(ban)(ban)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)優(you)質(zhi)品。2017年(nian)，在(zai)JGJ/T385-2015實(shi)施(shi)(shi)后(hou)，南寧市城鄉建(jian)設(she)(she)(she)(she)委(wei)員(yuan)(yuan)會(hui)(hui)發布《關于督促軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)3號(hao)(hao)線(xian)(xian)工(gong)(gong)(gong)程(cheng)(cheng)落實(shi)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)應(ying)用(yong)的(de)(de)(de)(de)(de)(de)(de)函》(南建(jian)管函(2016)14號(hao)(hao))，規(gui)(gui)定軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)工(gong)(gong)(gong)程(cheng)(cheng)必(bi)(bi)須使(shi)用(yong)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)，在(zai)《關于建(jian)設(she)(she)(she)(she)領域推廣(guang)(guang)應(ying)用(yong)相關技(ji)(ji)術(shu)的(de)(de)(de)(de)(de)(de)(de)通(tong)知》（南建(jian)規(gui)(gui)[2017]5號(hao)(hao)）中將高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)列入推廣(guang)(guang)應(ying)用(yong)名(ming)錄中。自2019年(nian)起(qi)，為組織車站(zhan)主(zhu)體(ti)、附屬結構、區間等(deng)分(fen)項(xiang)分(fen)部工(gong)(gong)(gong)程(cheng)(cheng)質(zhi)量(liang)(liang)驗(yan)收，南寧軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)集團有限責任(ren)公(gong)司(si)組織開(kai)展高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)，具體(ti)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)作(zuo)(zuo)由廣(guang)(guang)西壯族自治(zhi)區建(jian)筑(zhu)工(gong)(gong)(gong)程(cheng)(cheng)質(zhi)量(liang)(liang)檢(jian)(jian)(jian)測中心(xin)（以(yi)下簡稱中心(xin)）負責，在(zai)全國(guo)首次采(cai)(cai)用(yong)JGJ/T385-2015開(kai)展高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)設(she)(she)(she)(she)計(ji)、生(sheng)(sheng)(sheng)產(chan)、工(gong)(gong)(gong)程(cheng)(cheng)全過(guo)程(cheng)(cheng)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)，成功(gong)用(yong)于軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)3號(hao)(hao)線(xian)(xian)、4號(hao)(hao)線(xian)(xian)、5號(hao)(hao)線(xian)(xian)及(ji)2號(hao)(hao)線(xian)(xian)東延工(gong)(gong)(gong)程(cheng)(cheng)。為順利開(kai)展評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)作(zuo)(zuo)，南寧軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)集團有限責任(ren)公(gong)司(si)與中心(xin)為評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)作(zuo)(zuo)召(zhao)開(kai)論證會(hui)(hui)，并明(ming)確(que)(que)了(le)骨料(liao)(liao)(liao)及(ji)礦物(wu)摻合(he)料(liao)(liao)(liao)放射(she)性(xing)(xing)(xing)(xing)檢(jian)(jian)(jian)測可采(cai)(cai)用(yong)同料(liao)(liao)(liao)源生(sheng)(sheng)(sheng)產(chan)的(de)(de)(de)(de)(de)(de)(de)送檢(jian)(jian)(jian)報告(gao)，可收集生(sheng)(sheng)(sheng)產(chan)企(qi)(qi)(qi)業(ye)出(chu)具的(de)(de)(de)(de)(de)(de)(de)出(chu)廠氯離子含量(liang)(liang)報告(gao)，可采(cai)(cai)用(yong)現場(chang)施(shi)(shi)工(gong)(gong)(gong)、監理(li)單位坍(tan)落度、擴展度報告(gao)進行(xing)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)拌(ban)(ban)合(he)物(wu)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)進行(xing)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)。高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)按JGJ/T385要(yao)(yao)(yao)求(qiu)(qiu)，由原材料(liao)(liao)(liao)、配(pei)合(he)比(bi)、制備(bei)(bei)、混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)、施(shi)(shi)工(gong)(gong)(gong)5個(ge)方(fang)(fang)面(mian)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)指(zhi)(zhi)標(biao)組成。結合(he)南寧市對高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)企(qi)(qi)(qi)業(ye)綠色生(sheng)(sheng)(sheng)產(chan)水平，制備(bei)(bei)管理(li)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)側重于對企(qi)(qi)(qi)業(ye)的(de)(de)(de)(de)(de)(de)(de)管理(li)體(ti)系建(jian)設(she)(she)(she)(she)、實(shi)驗(yan)室的(de)(de)(de)(de)(de)(de)(de)建(jian)設(she)(she)(she)(she)和管理(li)、技(ji)(ji)術(shu)人員(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)能(neng)(neng)(neng)(neng)(neng)力、生(sheng)(sheng)(sheng)產(chan)裝備(bei)(bei)、生(sheng)(sheng)(sheng)產(chan)過(guo)程(cheng)(cheng)質(zhi)量(liang)(liang)控制以(yi)及(ji)綠色生(sheng)(sheng)(sheng)成等(deng)全方(fang)(fang)位的(de)(de)(de)(de)(de)(de)(de)規(gui)(gui)范化生(sheng)(sheng)(sheng)產(chan)能(neng)(neng)(neng)(neng)(neng)力評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)。此外，制備(bei)(bei)管理(li)要(yao)(yao)(yao)求(qiu)(qiu)中的(de)(de)(de)(de)(de)(de)(de)綠色生(sheng)(sheng)(sheng)產(chan)分(fen)項(xiang)可采(cai)(cai)用(yong)當年(nian)度綠色生(sheng)(sheng)(sheng)產(chan)考核結果(guo)(guo)，不(bu)再重復評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)。原材料(liao)(liao)(liao)方(fang)(fang)面(mian)指(zhi)(zhi)標(biao)見前文第(di)2點，均滿(man)(man)(man)(man)足(zu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)要(yao)(yao)(yao)求(qiu)(qiu)，其(qi)(qi)中水泥比(bi)表面(mian)積364m2/㎏，粉煤灰滿(man)(man)(man)(man)足(zu)F類Ⅱ級(ji)的(de)(de)(de)(de)(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)。配(pei)合(he)比(bi)方(fang)(fang)面(mian)指(zhi)(zhi)標(biao)見前文第(di)3點，均滿(man)(man)(man)(man)足(zu)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)要(yao)(yao)(yao)求(qiu)(qiu)。混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)方(fang)(fang)面(mian)，南寧市軌(gui)(gui)道(dao)(dao)交(jiao)通(tong)5號(hao)(hao)線(xian)(xian)新秀(xiu)公(gong)園站(zhan)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)的(de)(de)(de)(de)(de)(de)(de)耐(nai)久(jiu)性(xing)(xing)(xing)(xing)要(yao)(yao)(yao)求(qiu)(qiu)有抗(kang)(kang)碳化、抗(kang)(kang)滲性(xing)(xing)(xing)(xing)、電(dian)通(tong)量(liang)(liang)，工(gong)(gong)(gong)程(cheng)(cheng)選(xuan)用(yong)28d電(dian)通(tong)量(liang)(liang)作(zuo)(zuo)為耐(nai)久(jiu)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)指(zhi)(zhi)標(biao)，其(qi)(qi)他指(zhi)(zhi)標(biao)滿(man)(man)(man)(man)足(zu)設(she)(she)(she)(she)計(ji)要(yao)(yao)(yao)求(qiu)(qiu)即可，標(biao)記為HPC-A-C35P8-180（P8）-Q-Ⅲ(1500)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)電(dian)通(tong)量(liang)(liang)檢(jian)(jian)(jian)測結果(guo)(guo)為1298，滿(man)(man)(man)(man)足(zu)≤1500C的(de)(de)(de)(de)(de)(de)(de)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)要(yao)(yao)(yao)求(qiu)(qiu)。抗(kang)(kang)滲性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)滿(man)(man)(man)(man)足(zu)P8要(yao)(yao)(yao)求(qiu)(qiu)，共取樣送檢(jian)(jian)(jian)了(le)66組抗(kang)(kang)壓試(shi)塊，最低值47.0MPa，滿(man)(man)(man)(man)足(zu)C35強(qiang)度等(deng)級(ji)要(yao)(yao)(yao)求(qiu)(qiu)。施(shi)(shi)工(gong)(gong)(gong)方(fang)(fang)面(mian)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)，采(cai)(cai)用(yong)塑料(liao)(liao)(liao)薄膜覆(fu)蓋保濕(shi)養(yang)護，澆筑(zhu)、養(yang)護記錄表明(ming)未發現明(ming)顯(xian)裂(lie)縫(feng)，拆模后(hou)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)外觀質(zhi)量(liang)(liang)良(liang)好(hao)，無溫度應(ying)力引起(qi)的(de)(de)(de)(de)(de)(de)(de)明(ming)顯(xian)裂(lie)縫(feng)。經評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)該標(biao)記混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)滿(man)(man)(man)(man)足(zu)高(gao)(gao)(gao)(gao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)原材料(liao)(liao)(liao)、配(pei)合(he)比(bi)、制備(bei)(bei)、混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)(ning)(ning)(ning)(ning)(ning)土(tu)(tu)(tu)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)(neng)(neng)、施(shi)(shi)工(gong)(gong)(gong)等(deng)5個(ge)方(fang)(fang)面(mian)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)指(zhi)(zhi)標(biao)，以(yi)及(ji)滿(man)(man)(man)(man)足(zu)設(she)(she)(she)(she)計(ji)、生(sheng)(sheng)(sheng)產(chan)、工(gong)(gong)(gong)程(cheng)(cheng)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)3個(ge)評(ping)(ping)(ping)(ping)(ping)(ping)價(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)類別的(de)(de)(de)(de)(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)。

5高性能混凝土應用需要注意的問題

⑴為避免(mian)因混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)自收縮而產生的(de)裂紋，新秀公園站(zhan)主(zhu)體(ti)結構(gou)混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)施(shi)工(gong)(gong)分為14段按順序(xu)施(shi)工(gong)(gong)，各(ge)個施(shi)工(gong)(gong)工(gong)(gong)區錯開混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)澆(jiao)(jiao)筑時間，采用(yong)塑料薄膜進行覆蓋養(yang)(yang)(yang)(yang)護不少于(yu)(yu)14天，養(yang)(yang)(yang)(yang)護期間每天澆(jiao)(jiao)水(shui)或噴淋灑水(shui)進行保濕養(yang)(yang)(yang)(yang)護，經(jing)(jing)現(xian)場檢查(cha)未(wei)(wei)發(fa)現(xian)明(ming)顯裂紋。分段施(shi)工(gong)(gong)及(ji)有效(xiao)養(yang)(yang)(yang)(yang)護是控制混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)裂縫的(de)有效(xiao)措施(shi)。⑵針對現(xian)代水(shui)泥比表面積高、混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)水(shui)化放熱快、易(yi)引起混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)開裂的(de)特(te)征，新秀公園站(zhan)高性能混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)生產企(qi)業采用(yong)雙摻礦(kuang)粉、粉煤灰來降低混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)水(shui)化熱，其摻量達(da)135㎏/m3，比例(li)達(da)33%。混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)分層進行澆(jiao)(jiao)筑，非泵送(song)混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)最大(da)攤鋪厚度(du)不大(da)于(yu)(yu)400mm，泵送(song)混(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)攤鋪厚度(du)不大(da)于(yu)(yu)600mm，經(jing)(jing)精心施(shi)工(gong)(gong)及(ji)嚴格(ge)養(yang)(yang)(yang)(yang)護管(guan)理，現(xian)場檢查(cha)未(wei)(wei)發(fa)現(xian)明(ming)顯裂縫。

6結語

卵石機制(zhi)(zhi)(zhi)砂、碎石機制(zhi)(zhi)(zhi)砂混(hun)(hun)(hun)合配(pei)制(zhi)(zhi)(zhi)的高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)，經配(pei)合比(bi)(bi)試驗，混(hun)(hun)(hun)凝(ning)土(tu)電(dian)通(tong)量(liang)、抗滲、水溶性(xing)(xing)(xing)氯離子等性(xing)(xing)(xing)能(neng)均滿足(zu)高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)設計及(ji)評(ping)(ping)價(jia)(jia)要(yao)求。按JGJ/T385-2015對機制(zhi)(zhi)(zhi)砂高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)原(yuan)材料、配(pei)合比(bi)(bi)、制(zhi)(zhi)(zhi)備、混(hun)(hun)(hun)凝(ning)土(tu)性(xing)(xing)(xing)能(neng)、施(shi)工5個方面，及(ji)設計、生產(chan)、工程評(ping)(ping)價(jia)(jia)3個評(ping)(ping)價(jia)(jia)類別進行評(ping)(ping)價(jia)(jia)，新秀公園(yuan)站主體結(jie)構用混(hun)(hun)(hun)凝(ning)土(tu)滿足(zu)高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)評(ping)(ping)價(jia)(jia)要(yao)求。為保證(zheng)高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)滿足(zu)耐(nai)久性(xing)(xing)(xing)要(yao)求，應注意(yi)分段施(shi)工及(ji)控制(zhi)(zhi)(zhi)混(hun)(hun)(hun)凝(ning)土(tu)水化放熱(re)量(liang)。確保混(hun)(hun)(hun)凝(ning)土(tu)無明(ming)顯裂縫，是高(gao)(gao)性(xing)(xing)(xing)能(neng)混(hun)(hun)(hun)凝(ning)土(tu)長壽命的基礎。

【參考文獻】

[1]喬永平,盧凌(ling)寰,朱惠英,馮慶(qing)革.廣西預拌混凝(ning)土(tu)用(yong)機(ji)制砂使用(yong)現狀及問題分析(xi)[J].山西建(jian)筑,2015,41(27):121-122.

[2]秦明強,朱瑤宏,李(li)進輝,占文,屠柳(liu)青.人工混合砂在軌(gui)道交通工程混凝土中的應(ying)用研究[J].鐵道建(jian)筑(zhu),2011(09):77-79.

作者：楊衛軍(jun)(jun) 李錫松(song) 楊成軍(jun)(jun) 張建 黃冰宇 吳(wu)曉遠(yuan) 單位：廣西壯族自(zi)治(zhi)區(qu)建筑(zhu)工程檢(jian)測中心有限(xian)公(gong)司