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Development of model parameters for early-age properties and crack-width prediction of slag concretes

机译:矿渣混凝土早期性能模型参数及裂缝宽度预测

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摘要

A study to develop the parameters of the models for predicting the deformation characteristics of normal-strength concrete incorporating slag-blended cements at early age is presented in this paper. By comparing with the previous experimental results, it was found that the basic shrinkage and creep factor decreased significantly owing to the expansion of slag concrete during the first week of moist curing. When utilising the developed models for estimating the crack width, it was found that the initial crack width of concrete subjected to restraint drying shrinkage is reduced if the slag content level increased up to 50 and 65% in the concrete mixture. Further, slag concrete tends to have less crack width and lower number of cracks in the long term compared with that with no slag.
机译:本文提出了对预测模型的参数进行预测的研究,该模型可预测掺有矿渣水泥的普通强度混凝土的早期变形特性。通过与先前的实验结果进行比较,发现基本收缩率和蠕变因子由于湿固化第一周内矿渣混凝土的膨胀而显着降低。当使用开发的模型估算裂缝宽度时,发现如果矿渣含量增加到混凝土混合物中的矿渣含量分别达到50%和65%,受约束干燥收缩的混凝土的初始裂缝宽度会减小。另外,从长远来看,与没有矿渣的混凝土相比,矿渣混凝土倾向于具有较小的裂缝宽度和较少的裂缝数量。

著录项

  • 来源
    《Magazine of Concrete Research》 |2009年第5期|379-386|共8页
  • 作者

    T. Aly; J. G. Sanjayan;

  • 作者单位

    Department of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, Australia;

    Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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