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等温干燥条件下混凝土内部相对湿度的分布 被引量：17

Internal Relative Humidity Distribution of Concrete Under Isothermal Drying Conditions
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摘要 研究了不同水灰比与水泥浆体体积含量的混凝土在单轴等温干燥条件下内部相对湿度 ( Internal Relative Hu-m idity,IRH)分布以及自干燥引起的 IRH变化。结果表明 ,自干燥引起的混凝土 IRH下降随着水灰比的减小与浆体体积含量的增大而增大。对高水灰比的混凝土 ,IRH变化主要受水分扩散控制 ,而对低水灰比的混凝土 ,其不仅取决于水分扩散 。 Internal relative humidity(IRH) distribution of concrete with different ratios of water to cement(w/c) and paste volume content in uniaxial isothermal drying condition and IRH changes results from self-desiccation were investigated. The results indicate that, the IRH reduction of concrete increases with the decrease of w/c and the increase of paste volume content in concrete. The IRH distribution concrete with high w/c is mainly dependent on moisture diffusion. However, the IRH distribution of concrete with low w/c is mainly dependent on self-desiccation as well as moisture diffusion.
作者 蒋正武 王培铭
机构地区 同济大学混凝土材料研究国家重点实验室
出处 《武汉理工大学学报》 CAS CSCD 2003年第7期18-21,共4页 Journal of Wuhan University of Technology
基金 国家"973"重大基础研究项目 ( 2 0 0 1CB610 70 4) 同济大学工科基金
关键词 干燥 相对湿度 自干燥 水分扩散 drying relative humidity self-desiccation moisture diffusion
分类号 TU528 [建筑科学—建筑技术科学]
  • 相关文献

参考文献12

  • 1王新友,蒋正武,高相东,孙振平.混凝土中水分迁移机理与模型研究评述[J].建筑材料学报,2002,5(1):67-71. 被引量：56
  • 2Bazant Z P, Najjar L J. Nonlinear Water Diffusion in Non-saturated Concrete[J]. Materials and Structures, 1927 5(25) :3~20.
  • 3Parrott L J. Factors Influencing Relative Humidity in Concrete[J]. Magazine of Concrete Research, 1991, 43(154): 45~52.
  • 4Terrill J M, Richardson M, Sekby A R. Non--linear Moisture Profiles and Shrinkage in Concrete Members[J]. Magazine of Concrete Research, 1986, 38(137): 220~225.
  • 5Mehta P K. Durability Critical Issues for the Future[J]. Concrete International, 1997, 19:1~12.
  • 6Person B. Moisture in Concrete Subjected to Different Kinds of Curing[J]. Materials and Structures. 1997,30(203):533~544.
  • 7Andrade C, Sarria J, Alonso C. Relative Humidity in the Interior of Concrete Exposed to Natural and Artificial Weathering[J]. C C R,1999,29:1249~1259.
  • 8Kim Jin-Keun, Lee Chil-Sung. Moisture Diffusion of Concrete Considering Self-desiccation at Early Ages[J]. C C R,1999, 29: 1921~1927.
  • 9Hua C,Acker P,Ehrlacher A. Analyses and Models of the Autogeneous Shrinkage of Hardening Cement Paste (I.Modeling at Macroscopic scale)[J]. C C R,1995,25(7):1457~1468.
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二级参考文献20

  • 1Mehta P K. Durability Critical issues for the future[J]. Concrete International, 1997,19:1-12.
  • 2Andrade C, Sarria J, Alonso C. Relative humidity in the interior of concrete exposed to natural and artificial weathering[J]. C CR, 1999,29:1249-1259.
  • 3Parrott L J. Factors influencing relative humidity in concrete[J]. Magazine of Concrete Research, 1991,43(154) :45-52.
  • 4Selih J, Bremner T W. Drying of saturated lightweight concrete: An experimental investigation[J]. Materials and Structures,1996,29( 191 ) :401-405.
  • 5Terrill J M, Richardson M, Sekby A R. Non-linear moisture profiles and shrinkage in concrete members[J]. Magazine of Concrete Research, 1986,38(137) :220-225.
  • 6Bazant Z P, Najjar L J. Non-linear water diffusion in non-saturated concrete[J]. Materials and Structures, 1927,5(25) :3-20.
  • 7Kim Jin-Keun, Lee Chil-Sung. Moisture diffusion of concrete considering self-desiccation at early ages[J]. C C R, 1999,29:1921-1927.
  • 8谢依金A E.水泥混凝土的结构与性能[M]胡春芝译北京:中国建筑工业出版社,1984
  • 9Akita H, Fujiwara T, Ozaka Y. A practical procedure for the analysis of moisture transfer within concrete due to drying[J ]. Mag azine of Concrete Research, 1997,49 ( 179 ): 129-137.
  • 10巴赞特Z P.岩土和混凝土力学[M].张庙康译.重庆:重庆大学出版社,1991.197,218.

共引文献55

同被引文献135

引证文献17

二级引证文献171

武汉理工大学学报
2003年 第7期

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