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Strength and corrosion properties of Portland cement mortar and concrete with mineral admixtures

机译:含矿物掺合料的波特兰水泥砂浆和混凝土的强度和腐蚀性能

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摘要

This work aims to validate the design assumptions by the California Department of Transportation in order to better define the strategies used to design concrete structures with adequate corrosion mitigation and thus a "maintenance-free" service life. To this end, various laboratory tests were conducted to investigate the compressive strength of and chloride diffusivity in mortar and concrete samples with cement partially replaced by various minerals (class F and class N fly ash, ultra-fine fly ash, silica fume, metakaolin, and ground granulated blast-furnace slag), the porosity of mineral concretes, the freeze-thaw resistance of mineral mortars in the presence of deicers, and the effect of supplementary cementi-tious materials on the chloride binding and chemistry of the pore solution in mortar.
机译:这项工作旨在验证加利福尼亚交通运输部的设计假设,以便更好地定义用于设计具有足够缓蚀作用并因此实现“免维护”使用寿命的混凝土结构的策略。为此,进行了各种实验室测试,以研究用水泥分别用各种矿物(F级和N级粉煤灰,超细粉煤灰,硅粉,偏高岭土,和磨碎的高炉矿渣),矿物混凝土的孔隙率,存在除冰剂的情况下矿物砂浆的抗冻融性以及补充胶凝材料对砂浆中氯离子结合和孔隙溶液化学性质的影响。

著录项

  • 来源
    《Construction and Building Materials》 |2011年第8期|p.3245-3256|共12页
  • 作者单位

    Corrosion & Sustainable Infrastructure Laboratoiy. Western Transportation Institute, Montana State University, P.O. Box 174250, Bozeman, MT 59717-4250, USA ,Civil Engineering Department, Montana State University, 205 Cobleigh Hall, Montana State University, Bozeman, MT 59717-3900, USA;

    Corrosion & Sustainable Infrastructure Laboratoiy. Western Transportation Institute, Montana State University, P.O. Box 174250, Bozeman, MT 59717-4250, USA;

    Corrosion & Sustainable Infrastructure Laboratoiy. Western Transportation Institute, Montana State University, P.O. Box 174250, Bozeman, MT 59717-4250, USA;

    Corrosion & Sustainable Infrastructure Laboratoiy. Western Transportation Institute, Montana State University, P.O. Box 174250, Bozeman, MT 59717-4250, USA;

  • 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

    mineral admixtures; reinforced concrete; chloride-induced corrosion; fly ash; silica fume; metakaolin; ground granulated blast-furnace slag; deicer scaling resistance;

    机译:矿物外加剂;钢筋混凝土;氯化物腐蚀;粉煤灰;硅粉;偏高岭土;粒状高炉矿渣;抗除冰垢性;

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