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Pervious concrete paste composition.

机译：透水混凝土糊料组成。

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摘要

Pervious PCC is recognized as a sustainable solution to stormwater management issues. However, currently the paste used in pervious concrete is predominantly Portland cement. Portland cement poses several threats to the environment that must be evaluated. Estimates have revealed that the production of one ton of Portland cement will, in return, release approximately one ton of CO2 into the atmosphere. CO2 is recognized as a greenhouse gas that is believed to contribute to global warming. Replacing percentages of Portland cement with a variety of cementitious materials that are byproducts of industrial processes will greatly improve the environmental quality of the mixture. Capitalizing on the use of wastes will also contribute to the best use of a nation's landfill space. Researching various paste compositions reveals the effectiveness of replacing various percentages of the Portland cement with byproduct cementitious materials. In turn, it improves the environmental qualities of the already "green" pervious concrete. A total of 31 preliminary mixes were cast and analyzed. The control used for the analysis was taken as the average of three control mixes. The remaining 28 preliminary mixes were completed by only altering one aspect of the paste composition at a time. The first five mixes altered the paste by making slight adjustments to various chemical admixtures. Four tertiary mixtures were designed which used three different materials to make up the cementitious component. In the remaining 19 mixes, the composition of the pervious paste was gradually altered by increasing the amount of fly ash or slag in 12.5% increments.
机译：先前的PCC被认为是解决雨水管理问题的可持续解决方案。但是，目前用于透水混凝土中的浆料主要是硅酸盐水泥。波特兰水泥对环境构成了若干威胁，必须对其进行评估。据估计，一吨波特兰水泥的生产将相应地向大气释放约一吨二氧化碳。二氧化碳被认为是一种温室气体，被认为是导致全球变暖的原因。用作为工业过程副产品的各种胶结材料代替波特兰水泥的百分比将大大改善混合物的环境质量。利用废物利用也将有助于最佳利用一个国家的垃圾填埋场。对各种糊料组成的研究表明，用副产物胶凝材料替代各种百分比的波特兰水泥的有效性。反过来，它可以改善已经“绿色”的透水混凝土的环境质量。共浇铸和分析了31种初步混合物。用于分析的对照作为三种对照混合物的平均值。通过一次仅改变糊剂组成的一个方面来完成剩余的28种预混合料。前五种混合物通过对各种化学外加剂稍作调整来改变糊状。设计了四种第三种混合物，它们使用三种不同的材料来构成水泥成分。在其余的19种混合物中，通过以12.5％的增量增加粉煤灰或矿渣的含量，逐渐改变了透水性浆料的组成。

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  • 作者

    Phillips, Jason B.;

  • 作者单位

    Tennessee Technological University.;

  • 授予单位 Tennessee Technological University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2009
  • 页码 106 p.
  • 总页数 106
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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