全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

混凝土的自收缩与其抗压强度的相关性

DOI: 10.14062/j.issn.0454-5648.2015.11.23

Full-Text   Cite this paper   Add to My Lib

Abstract:

探究了混凝土的自收缩与抗压强度的相关性,建立了描述两者关系的二次多项式数学模型。该模型是基于抗压强度和自收缩均与混凝土的孔隙及其特征密切关联的事实提出的。通过对文献中报道的实验数据进行回归分析求解了这一相关性模型的非变量参数。发现拟合曲线与实验数据的吻合度较高,其回归系数普遍高于0.94。基于现有数据,对可能影响该模型适用性的因素如水胶比、矿物掺合料、化学外加剂及环境温度等进行了分析。分析表明,对于骨料总用量为1500~1841kg/m3、砂率为36.8%~45.3%的混凝土,所提出的自收缩与抗压强度相关性模型具有较好的适用性。

References

[1]  ?TONGAROONSRI?S.?Prediction?of?autogenous?shrinkage,?dryingshrinkage?and?shrinkage?cracking?in?concrete?[D].?Thailand:Thammasat?University,?2009.
[2]  ?American?Concrete?Institute.?ACI?209.2R-08?Guide?for?modeling?andcalculating?shrinkage?and?creep?[S].?Detroit:?American?ConcreteInstitute,?2008.
[3]  ?CEB-FIP,?Structural?concrete:?textbook?on?behavior,?design?andperformance[M].?Vol.?1.?Stuttgart:?Sprint-Druck,?1999:?43–46.
[4]  ?RILEM?TC?119-TCE.?Avoidance?of?thermal?cracking?in?concrete?atearly?age-recommendation?[J].?Mater?Struct.?1997,?30:?451–464.
[5]  ?BAZANT?Z?P,?PANULA?L.?Practical?prediction?of?time-dependentdeformations?of?concrete?Part?V:?Temperature?effect?on?drying?creep?[J].Mater?Struct,?1979,?12(69):?169–174.
[6]  ?TAZAWA?E,?MIYAZAWA?S.?Influence?of?cement?and?admixture?onautogenous?shrinkage?of?cement?paste?[J].?Cem?Concr?Res,?1995,?25:281–287.
[7]  ?MIYAZAWA?S,?TAZAWA?E.?Prediction?model?for?shrinkage?ofconcrete?including?autogenous?shrinkage[A]//In:?Ulm?F-J,?Bazant?Z?P,Wittmann?F?H,?ed,?Creep,?Shrinkage?and?Durability?Mechanics?ofConcrete?and?Other?Quasi-brittle?Materials,?Proceedings?of?SixthInternational?Conference[C],?Elsevier?Science?Ltd.,?2001:?735–746.
[8]  ?HUA?C,?EHRLACHER?A,?ACKER?P.?Analyses?and?models?of?theautogenous?shrinkage?of?hardening?cement?paste?II.?Modelling?at?scaleof?hydrating?grains?[J].?Cem?Concr?Res,?1997,?27(2):?245–258.
[9]  ?LI?Yue,?LI?Jiaqi.?Capillary?tension?theory?for?prediction?of?earlyautogenous?shrinkage?of?self-consolidating?concrete?[J].?Constr?BuildMater,?2014,?53:?511–516.
[10]  ?AKTHEM?A,?PRADO?A.?Statistical?comparisons?of?creep?andshrinkage?prediction?models?using?RILEM?and?NU-ITI?databases?[J].ACI?Mater?J,?2014,?111:?1–12.
[11]  ?LI?Yue,?YAN?Qian-qian,?DU?Xiuli.?Relationship?between?autogenousshrinkage?and?tensile?strength?of?cement?paste?with?SCM?[J].?J?MaterCiv?Eng,?2012(24):?1268–1273.
[12]  ?GAO?Xiaojian,?BA?Hengjing,?MA?Baoguo.?The?relationship?amongcement?hydration?degree,?compressive?strength?and?autogenousshrinkage?of?concrete?at?early?ages[J].?Indus?Constr(in?Chinese),?2006,36(2):?64–67.
[13]  ?NEVILLE?A?M.?Properties?of?concrete?[M].?5th?ed.?Harlow:?PearsonEducation?Limited,?2011:?279–285
[14]  ?MEHTA?P?K,?MONTEIRO?J?M.?Concrete:?structure,?properties,?andmaterials?[M].?2nd?ed.?New?Jersey:?Prentice?Hall,?1993:?50–52.
[15]  ?KUMARA?R,?BHATTACHARJEE?B.?Porosity,?pore?size?distributionand?in?situ?strength?of?concrete?[J].?Cem?Concr?Res,?2003,?33:155–164.
[16]  ?KEARSLEYA?E?P,?WAINWRIGHT?P?J.?The?effect?of?porosity?on?thestrength?of?foamed?concrete?[J].?Cem?Concr?Res,?2002,?32:?233–239.
[17]  ?LIAN?C.,?ZHUGE?Y,?BEECHAM?S.?The?relationship?between?porosityand?strength?for?porous?concrete?[J].?Constr?Build?Mater,?2011,?25:4294–4298.
[18]  ?LEE?K?M,?LEE?H?K,?LEE?S?H,?et?al.?Autogenous?shrinkage?ofconcrete?containing?granulated?blast-furnace?slag?[J].?Cem?Concr?Res,2006,?36:?1279–1285.
[19]  ?LEE?H?K,?LEE?K?M,?KIM?B?G.?Autogenous?shrinkagehigh-performance?concrete?containing?fly?ash?[J].?Magz?Concr?Res,2003,?55(6):?507–515.
[20]  ?ZELIC?J,?RUSIC?D,?KRSTULOVIC?R.?A?mathematical?model?forprediction?of?compressive?strength?in?cement-silica?fume?blends?[J].Cem?Concr?Res,?2004,?34(6):?2319–2328.
[21]  ?YANG?Y.?Fundamental?studies?on?separation?of?volume?changecomponents?and?their?induced?stress?of?high?strength?concrete?[D].Hiroshima,?Jpn:?Hiroshima?University,?2001:?96–100.
[22]  ?YANG?Y,?CHEN?F,?SATO?R.?Development?and?prediction?ofcompressive?strength?and?Young’s?modulus?of?high?strength?concrete?atearly?ages?[J].?China?Concr?Cem?Prod,?2004(3):?1–4
[23]  ?JIANG?Chenhui,?YANG?Yang,?WANG?Yong,?et?al.?Autogenousshrinkage?of?high?performance?concrete?containing?mineral?admixturesunder?different?curing?temperatures?[J].?Constr?Build?Mater,?2014,?61:260–269.
[24]  ?NAIK?T?R.,?CHUN?Y?M,?KRAUS?R?N.?Shrinkage?of?concrete?with?andwithout?fly?ash?[A]//?The?Ninth?CANMET/ACI?InternationalConference?on?Fly?Ash,?Silica?Fume,?Slag,?and?Natural?Pozzolans?inConcrete[C].?Poland,?May-June,?2007.
[25]  ?JIANG?Chenhui,?YANG?Yang,?LI?Peng,?et?al.?Time?dependence?onthermal?expansion?behavior?of?cement?mortar?at?early?ages[J].?J?ChinCeram?Soc,?2013,?41(5):?605–611.
[26]  ?YAN?Peiyu,?CHEN?Zhicheng.?Autogenous?shrinkage?of?fly?ashconcrete?with?different?water-binder?ratios[J].?J?Chin?Ceram?Soc,?2014,42(5):?585–589.
[27]  ?Japan?Concrete?Institute.?Technical?committee?report?on?autogenousshrinkage?of?concrete[C]//Proceedings?of?International?Workshop?onAutogenous?Shrinkage?of?Concrete.?Hiroshima,?Japan,?E?&?FN?Spon,1998.
[28]  ?KOVLER?K,?ZHUTOVSKY?S.?Overview?and?future?trends?ofshrinkage?research?[J].?Mater?Struct,?2006,?39:?827–847.
[29]  ?BENTZ?D?P.?A?review?of?early-age?properties?of?cement-basedmaterials?[J].?Cem?Concr?Res,?2008,?38:?196–204.
[30]  ?WEISS?J.?Prediction?of?early-age?shrinkage?cracking?in?concreteelements?[D].?Evanston:?Northwestern?University,?1999.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133