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Early freezing effects on high-strength concretes incorporating mineral admixtures.

机译:对掺有矿物掺合料的高强度混凝土的早期冻结作用。

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摘要

This research investigates the effects of interrupting curing of high-strength concrete (HSC) specimens at an early age by freezing. Each mix used had at least one of three mineral admixtures; silica fume, fly ash, and ground granulated blast furnace slag.; A minimum target compression strength (fc) of 69.8 Mpa (10,000psi) at 56 days was used. Specimens were cured under both moist curing and sealed curing conditions.; A 24-hour freeze was conducted on representative specimen sets at different stages of curing. HSC specimens were tested in compression at 28 days for all sets subjected to freezing including control sets from each mix.; All the concrete specimen sets tested at 28 days had at least one cylinder test as high or higher than the required fc of 68.95 Mpa (10,000 psi).
机译:这项研究调查了通过冻结中断高强度混凝土(HSC)标本在早期的固化效果。所使用的每种混合物均具有至少三种矿物混合物中的一种。硅粉,飞灰和磨碎的高炉矿渣。在56天时使用的最小目标抗压强度(f ')为69.8 Mpa(10,000psi)。样品在湿固化和密封固化条件下均固化。在固化的不同阶段对代表性样品组进行24小时冷冻。在28天时,对所有经受冷冻的组,包括来自每种混合物的对照组,在压缩下测试HSC样品。在28天时测试的所有混凝土试样集至少有一个圆柱体测试结果高于或高于68.95 Mpa(10,000 psi)的要求f c。

著录项

  • 作者

    Roberts, Bryan N.;

  • 作者单位

    Utah State University.;

  • 授予单位 Utah State University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2002
  • 页码 78 p.
  • 总页数 78
  • 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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