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              1. 当前位置: 代写一篇论文多少钱 > 工程师论文 > 地质聚合物混凝土在建筑材料中的应用价值

                地质聚合物混凝土在建筑材料中的应用价值

                时间:2018-12-16 10:13作者:王璐瑶 姚丝思
                本文导读:这是一篇关于地质聚合物混凝土在建筑材料中的应用价值的文章,随着城市化进程加快及基础设施的增加,水泥的需求量不断增加,但由于石灰石储量有限,水泥生产技术提升缓慢造成的产能有限以及碳税的增加,混凝土行业开始面临着重要挑战。

                  摘    要: 地质聚合物是目前可以替代水泥的新型建筑材料之一,具有养护时间需求短、抗压强度高、渗透性低、耐火性高等优点,其抗压强度、劈裂抗拉强度、抗弯强度、弹性模量等多种力学特性与固液比、碱活化剂浓度、固化时间及温度等制备条件密切相关。本文从地质聚合物的发展展开,主要阐述了地质聚合物硬化特点、粘结力、界面过渡带和耐火性等特点,总结了地质聚合物与传统混凝土的优势所在,并从今后的发展趋势进行展望。

                  关键词: 混凝土; 地质聚合物; 粘结力; 耐火性;

                  SUIZHECHENGSHIHUAJINCHENGJIAKUAIJIJICHUSHESHIDEZENGJIA,SHUINIDEXUQIULIANGBUDUANZENGJIA,DANYOUYUSHIHUISHICHULIANGYOUXIAN,SHUINISHENGCHANJISHUTISHENGHUANMANZAOCHENGDECHANNENGYOUXIANYIJITANSHUIDEZENGJIA,HUNNINGTUXINGYEKAISHIMIANLINZHEZHONGYAOTIAOZHAN。JUBAODAO,YINDUDESHUINIXUQIULIANGDAO2020NIANKENENGDADAO5.5YIt,QUEKOUWEI2.3YIt,YUE58%。YINCI,KAIFAKEYITIDAISHUINIDEZHANHEJISHIMUQIANJIEJUEGAIWENTIDETUJINGZHIYI,RUJIANHUOHUASHUINI、LIULVSUANGAISHUINI、TANSUANYANGMEISHUINI(FUTANSHUINI)、CHAOLIUSUANYANSHUINIDENG。SUIZHEDUIJIANHUOHUASHUINIYANJIUDESHENRU,KEGENJUSHUIHECHANWUDEXIANGZUCHENGJIANGQIFENWEI3LEI,FENBIEWEI:JUYOUR-A-S-H(R=Na+HUOK+)DELVGUISUANYANJITIXI,JUYOUR-C-A-S-HDEJIANHUOHUAKUANGZHAYIJIJIANXINGGUISUANYANSHUINI。JINNIANLAI,DIZHIJUHEWUYINQIYANGHUSHIJIANXUQIUDUAN、KANGYAQIANGDUGAO、SHENTOUXINGDI、NAIHUOXINGGAODENGYOUSHIYINQILEGUANGFANGUANZHU,CHENGWEIPUTONGBOLANTESHUINIYOUXIUDETIDAIPIN,BEIYONGYUZHIZAOJIANZHUCAILIAO、HUNNINGTU、NAIHUOTULIAO、XIANWEIZENGQIANGFUHECAILIAOYIJIHUAXUEHEGONGYEFEILIAOZIYUANHUACHUZHIDENGZHUDUOFANGMIAN。DIZHIJUHEWUYEKEYIBEICHENGWEIWUDINGXINGJIANXINGLVGUISUANYANHUOJIANHUOHUADESHUINI,KEYITONGGUOSHILVGUISUANYANRUFENMEIHUI(FA)、PIANGAOLINGTU(MK)、KUANGZHA(SG)、DAOQIAOHUI(RHA)HEGAOGAIMUHUI(HCWA)DENG,ZAIJIANXINGRONGYEZHONGHUOHUA、JUHELAISHENGCHANDIJUHEWUHUNNINGTU。YINCI,SHENGCHANDIZHIJUHEWUHUNNINGTUDEXIAOLVGAODUYILAIYUHUOHUAJIYIJILVGUISUANYANZIYUANDELEIXING。YUPUTONGGUISUANYANSHUINI(OPC)HUOHUOSHANHUISHUINIBUTONG,DIZHIJUHEWULIYONGSIO2HEAL2O3DESUOJUFANYINGYIJIGAOJIANHANLIANGLAIHUODEKANGYAQIANGDU,CHANYOUOPCDEDIZHIJUHEWUHUIXINGCHENGSHUIHEGUISUANGAI(C-S-H)YIJISIO2HEAL2O3HEGAOJIANHANLIANGDESUOJUFANYING,CONGERHUODEKANGYAQIANGDU。

                  1、 地质聚合物的硬化性能

                  XIANGGUANYANJIUFAXIAN,DIZHIJUHEWUDEKANGYAQIANGDU、PILIEKANGLAQIANGDU、KANGWANQIANGDU、DANXINGMOLIANGDENGLIXUETEXINGYUQIZAIZHIBEIQIJIANDEGUYEHANLIANGBI、HUOHUAJIQIANGDU、H2O/Na2OBI、GUHUASHIJIAN、GUHUAWENDUDENGTIAOJIANMIQIEXIANGGUAN。YOUXUEZHE[1]YIFENMEIHUIWEIJICHUCAILIAO,SHEZHIHUOHUAJIQIANGDUWEI8~14MSHI,SUOZHICHENGDEDIZHIJUHEWUKANGYAQIANGDUKEDA30~80MPa,TANLUODUWEI100~250mm。DANGWENDUWEI90℃,YEGUBIWEI0.18SHI,DIZHIJUHEWUHUNNINGTUDEQIANGDUZUIGAO,ERSUIZHEYEGUHANLIANGBIDEZENGJIA,DIZHIJUHEWUHUNNINGTUDEKANGYAQIANGDUHUIJIANGDI。DIZHIJUHEWUHUNNINGTUDEKANGYAQIANGDUZAIGAOWENXIAGUHUA24hHOUKEYISUISHIYONGNIANXIANERBAOCHIBUBIAN,JINGGEZHONGTIAOJIANYOUHUAHOUDEDAODEDIZHIJUHEWUHUNNINGTUDEMUBIAOQIANGDUKEGAODA80MPa。LINGWAI,HAIYOUXUEZHE[2]ZAIYE/GUBIWEI0.55DETIAOJIANXIA,BINGYU85℃GUHUA20 hHOUZHIBEILEDEDAOFENMEIHUIJIDIJUHEWUHUNNINGTU,QIKANGYAQIANGDUWEI45 MPa,QIEQIDANXINGMOLIANG(18.4GPa)YUANYUANDIYUOPCHUNNINGTU(30.3GPa)。

                  另外,有研究证明粉煤灰基地质聚合物的实验劈裂抗拉强度高于OPC水泥,这是由于骨料和地质聚合物浆之间形成了一个较密的界面区域,而弹性模量会随着地质聚合物压缩强度的增加而增加[3]。
                 

                地质聚合物混凝土在建筑材料中的应用价值
                 

                  2、 地质聚合物界面过渡带

                  YIBANERYAN,GULIAOHEJITIZHIJIANDEJIEMIANGUODUQUYUSHIDIZHIJUHEWUHUNNINGTUZHONGZUIBORUODE,TONGCHANGZAIZAIHEZUOYONGXIAHUICHUXIANWEILIEWEN,YINCI,DUIGAIQUYUDEYANJIUFEICHANGGUANJIAN。DIZHIJUHEWUYUYINGHUAJIANGLIAODEWEIGUANJIEGOUBUTONG,PUTONGHUNNINGTUJIEMIANGUODUDAIDEGAOKONGXILVHUISHILVHUAWU、YANGQI、LIUSUANYANDENGWUZHIGENGRONGYISHENTOUDAOQIJIEGOUZHONG,DANYANJIUJIEGUOFAXIANDIZHIJUHEWUHUNNINGTUJIEMIANGUODUDAISHIFEICHANGZHIMIDE,YINCI,QIDUANLIELASHENQIANGDU、ZHANJIEQIANGDUHENAIJIUXINGNENGJUNGAOYUPUTONGHUNNINGTU[4]。YOUXUEZHE[5]YIGAOLINGTUHENAZHANGSHIWEILI,YANJIULEDIZHIJUHEWUZHONGTIANRANGUIZHIGULIAOYUHUJIZHIJIANDEJIEMIAN,JIEGUOFAXIANHUJIYUTIANRANGUIZHIGULIAOJIANDEJIEHENENGLISUIZHEHUOHUARONGYENONGDUDEZENGJIAERZENGJIA。TONGSHI,LVYANKENENGZAIGULIAOBIAOMIANFASHENGNINGJIAOJIEJINGDAOZHITUOZHAN,JINERJIANGDILEHUJIYUGULIAOZHIJIANDEJIEMIANZHANJIEQIANGDU。LINGWAI,TAMENYEFAXIANZAIHUOHUARONGYE(10M Na OHHE2.5MGUISUANNA)ZHONGTIANJIA0.5MKERONGXINGGUISUANYANHOU,KEYITONGGUOJIASUGAOLINGTUHUONAZHANGSHIZHONGGUIDERONGJIELAICUJINFULVDEGUILVSUANYANBIAOMIANDEXINGCHENG,ZAICIGUOCHENGZHONGXINGCHENGDEGUILVSUANYANBIAOMIANDESi/AlBIYUFENMEIHUI/PIANGAOLINGHE10M Na OHRONGYEHUOHUAHOUXINGCHENGDEDIZHIJUHEWUZHONGDEZHENSHIJIEMIANXIANGTONG。RUOWUKERONGXINGGUISUANYANTIANJIA,ZEBUHUIXINGCHENGCHENJIDEGUILVSUANYANJIEMIAN。ZHEIBIAOMING,GAONONGDUDEJIANJINSHUHEKERONGXINGGUISUANYANDUIYUZAIGUIZHIGULIAOHEDIZHIJUHEWUZHIJIANXINGCHENGLAOGUDEJIEMIANZHIGUANZHONGYAO。

                  3、 地质聚合物与钢筋的粘结力

                  GANGJINHUNNINGTUGOUJIANDEJIEGOUXINGNENGQUJUEYUHUNNINGTUYUGANGJINZHIJIANDEJIEHELI,QIZHONGJIEHELIDEJIZHIHUIYINGXIANGGANGJINDEMAIRUZHANGDU,JINERYINGXIANGJIEGOUYUANJIANDECHENGZAINENGLI,LIEFENGDEKAIDUHEJIANJU。YINCI,HUNNINGTUHEGANGJINZHIJIANDEJIEMIANCHUANDILIZAIJIEGOUSHEJIZHONGZHIGUANZHONGYAO。GANGJINYUHUNNINGTUDEZHANJIEQIANGDUYUHUNNINGTUDEQIANGDU、WEIRAOGANGJINDEHUNNINGTUDEHOUDU、GANGJINDEJIHEXINGZHUANGDENGDUOZHONGYINSUXIANGGUAN。YOUYANJIUBIAOMING,GANGJINHEDIZHIJUHEWUHUNNINGTUDEZHANJIEQIANGDUSUIGANGJINZHIJINGHEDIZHIJUHEWUHUNNINGTUZISHENKANGYAQIANGDUDEZENGJIAERZENGJIA,QIEDIZHIJUHEWUHUNNINGTUBIPUTONGOPCHUNNINGTUJUYOUGENGGAODEZHANJIEQIANGDU,ZHEISHIYINWEIGULIAOHEDIZHIJUHEWUZHIJIANDEKANGLAQIANGDUGENGGAO,JIEMIANGUODUQUGENGZHIMI[2]。YOUXUEZHE[6]HAIJINXINGLEFENMEIHUIJIDIJUHEWUHUNNINGTUYUSHUINIHUNNINGTUZAILIANGDUANSHIYANGZHONGGANGJINZHIJIANDEZHANJIEXINGWEIBIJIAOSHIYAN,JIEGUOFAXIANFENMEIHUIJIDIZHIJUHEWUHUNNINGTUDEZHANJIEQIANGDUZAI10.6~19.4MPaZHIJIAN,JUTIQUJUEYUFUGAICENGYUGANGJINDEZHIJINGBI。JINGUANZAIDIZHIJUHEWUHESHUINIHUNNINGTUZHONGDOUGUANCHADAOLELEISIDEFENLIEPOHUAIMOSHI,DANZAIFUGAICENG/GANGJINZHIJINGBIXIANGTONGDETIAOJIANXIA,DIZHIJUHEWUHUNNINGTUDEZHANJIEQIANGDURENGYAOGAOYUSHUINIHUNNINGTU。YEYOUXUEZHE[7]ZHENGSHI,FENMEIHUIJIDIZHIJUHEWUDEZHANJIEQIANGDUSUIZHEHUNNINGTUDINGGANZHIJINGBI(1.71~3.62)HEHUNNINGTUKANGYAQIANGDU(25~29MPa)DEZENGJIAERZENGJIA。HAIGUANCHADAO,DIZHIJUHEWUBIOPCHUNNINGTUJUYOUGENGGAODEZHANJIEQIANGDU,ZHEISHIYINWEIGULIAOHEDIZHIJUHEWUHULIAOZHIJIANDEKANGLAQIANGDUGENGGAO,JIEMIANGUODUQUGENGZHIMI。

                  4、 地质聚合物耐火性

                  PUTONGOPCHUNNINGTUTONGCHANGJUYOULIANGHAODENAIHUOXING,DANSHI,ZAI800~1000℃TIAOJIANXIA,YOUYUQINEIBUJIEJINGSHUIHEWUDETUOSHUI,GULIAOLEIXINGJISHENTOUXINGSHOUDAOPOHUAI,QICANYUQIANGDUYIBANBUHUICHAOGUO20%~30%。ERYANJIUBIAOMING,DIZHIJUHEWUZAIGAOWENTIAOJIANXIARENGJUYOUJIAOHAODENAIHUOXING。ZHEISHIYINWEIZAITAOCIZHUANGWEIJIEGOUZHONGCUNZAIZHEGAODUFENBUDENAMIKONG,ZHEIXIENAMIKONGYUNXUWULIHEHUAXUEJIANHEDESHUIQIANYIHEZHENGFA,DANBUHUIPOHUAIGUILVSUANYANWANGLUO[8,9]。YOUXUEZHE[10]YANJIUFAXIAN,JINGGUO800℃DUANSHAOHOU,FENMEIHUIJIDIZHIJUHEWUJIANGLIAODECANYUQIANGDUTIGAOLE6%,ERPIANGAOLINGTUJIDIZHIJUHEWUJIANGLIAODEQIANGDUJIANGDILE34%。ZAIJIAREGUOCHENGZHONG,FENMEIHUIJIDIZHIJUHEWUDEGAOSHENTOUXINGWEIQIJIZHIZHONGDESHUIFENTIGONGLETAOYILUJING,CONGERJIANSHAOLEQIANGDUDESUNHAI。LINGWAI,QIANGDUZENGJIAYEKENENGSHIWEIFANYINGDEFENMEIHUIKELIDESHAOJIEFANYINGZAOCHENGDE。YUPIANGAOLINGTUHENAJIHUOHUAJITIXIXIANGBI,YONGPIANGAOLINGTUHEJIAJIHUOHUAJIZHICHENGDEDIJUHEWUHUNNINGTUJUYOUGENGGAODEHOUSHENGGAOWENDUXINGNENG。QIQIANGDUDEJIANGDICHENGDUSUIZHESi/AlBI(>1.5)DEZENGJIAERJIANGDI,DANGGULIAOCHICUNDAYU10mm,ZAIHUANJINGWENDUHEGAOWEN(800℃)XIAJUNJUYOULIANGHAODEQIANGDUXINGNENG。DANGKANGYAQIANGDUWEI40~100MPaSHI,WENDUWEI850℃SHI,FENMEIHUIJIDIZHIJUHEWUDEBIAOMIANBINGWEICHUXIANBOLUOXIANXIANG,ERZAIXIANGTONGDEKANGYAQIANGDUHEWENDUTIAOJIANXIA,YOUYUFENMEIHUIJIDIZHIJUHEWUDEKONGXILVZENGJIA,YINCIQINAIHUOLIEXINGBIOPCHUNNINGTUGAO[11]。

                  5、 结语

                  SHIJIANZHENGMING,DIZHIJUHEWUHUNNINGTUZAIJIANZHUCAILIAOFANGMIANDEYINGYONGYONGYOUJUDAQIANLI。ZAISHIJIYINGYONGZHONGYINGGENJUJUTIYONGTU,RUDUANQIHEZHANGQIJIXIEXINGNENGYIJIZHENGTINAIJIUXINGDENGLAISHEJIJUTIDEGUHUAFANYING。DUIYURUHEZENGQIANGCAILIAOYUDIJUHEWUHUNNINGTUZHIJIANDEJIEHE,RUHEZENGQIANGDIZHIJUHEWUHUNNINGTUDEJIEGOUXINGNENGYIJIRUHEJIANGDICAILIAOZAIDIZHIJUHEWUHUNNINGTUZHONGDEFUSHIZUOYONGDENGFANGMIANDEJIANDANYIXINGDEFANGFAHAIXUYAOJINYIBUDEYANJIU。TONGSHI,DIZHIJUHEWUZHANHEJIXUYAOREGUHUA,GAOp HZHITIAOJIAN,DANZAIXIANCHANGCHULICAOZUOHAICUNZAIJIAODUOKUNNAN。YINCI,JINHOURENGXUKAIFACAOZUOJIANDANDEGUTIHUOHUAJILAIQUDAIMUQIANJIANJIFARONGYE。

                  参考文献

                  [1] Hardijito D,Wallah SE,Sumajouw DMJ,et al. On the Development of Fly Ash-Based GeopolymerConcrete[J]. ACI Mater. J.,2004,101(6):467-472.
                  [2] Fernandez-Jiminez AM,Palomo A,Lopez-Hombrados C. Engineering propertiesof alkali-activated fly ash concrete[J]. ACI Mater J. 2006(103):106-112.
                  [3] Ryu GS,Lee YB,Koh KT,et al. The mechanical properties of fly ash-based geopolymer concrete with alkaline activators[J]. Constr.Build Mater.,2013(47):409-418.
                  [4] Sarker PK,Haque R,Ramgolam KV. Fracture properties of heat cured fly ashbasedgeopolymerconcrete[J]. Mater. Des., 2013(44):580-586.
                  [5] Lee WKW,Van Deventure JSJ. The interface between natural siliceous aggregates and geopolymers. Cem[J]. Concr. Res.,2004(34):195-206.
                  [6] P. K. Sarker,Bond strength of reinforcing steel embedded in fly ash-based geopolymerconcrete[J],Mater. Struct. 2011(44):1021-1030.
                  [7] Sarker PK. Bond strength of reinforcing steel embedded in fly ashbased geopolymerconcrete[J]. Mater. Struct.,2011(44):1021-1030.
                  [8] Neville AM. Properties of concrete. 4th ed[M]. India:Dorling KindersleyPublishing,Inc.,1997.
                  [9] Kong DLY,Sanjayan JG. Effect of elevated temperatures on geopolymerpaste,mortar and concrete[J]. Cem. Concr. Res., 2010(40):334-339.
                  [10] Kong DLK,Sanjayan JG,Crentsil KS. Comparative performance of geopolymers made with metakaolin and fly ash after exposure to elevated temperature[J]. Cem. Concr. Res.,2007(37):1583-1589.
                棋牌大全下载安装   [11] Zhao R,Sanjayan JG. Geopolymer and Portland cement concretes in simulated fire. Mag[J]. Concr. Res.,2011(63):163-173.

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