...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Magazine of Concrete Research >Evaluation of short- and long-term properties of heat-cured alkali-activated fly ash concrete
【24h】

Evaluation of short- and long-term properties of heat-cured alkali-activated fly ash concrete

机译：热固化碱活化粉煤灰混凝土的短期和长期性能评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Short- and long-term properties of alkali-activated fly ash concrete, namely, compressive, flexural and splitting tensile strengths, modulus of elasticity, Poisson ratio, early-age and drying shrinkage, creep and durability performance have been investigated in this paper. Blended ordinary Portland cement-fly ash concrete was used as a reference. The average compressive and flexural strengths of alkali-activated fly ash concrete at 28 d were 45 MPa and 5.8 MPa, respectively; drying shrinkage and creep values were about 360 and 200 microstrain, respectively, at 1 year. The total early-age shrinkage during the first 24 h of curing was lower for alkali-activated fly ash concrete at 1460 microstrain compared to 2800 microstrain for blended cement concrete. The use of this non-Portland cement containing material for producing precast concrete units can utilise high volumes of fly ash and potentially reduce the carbon footprint of the final product.
机译：本文研究了碱活化粉煤灰混凝土的短期和长期性能，即压缩，挠曲和劈裂抗张强度，弹性模量，泊松比，早期和干燥收缩率，蠕变和耐久性能。掺混普通波特兰水泥-粉煤灰混凝土作为参考。碱活化粉煤灰混凝土在28 d时的平均抗压强度和抗折强度分别为45 MPa和5.8 MPa。一年时的干燥收缩率和蠕变值分别约为360和200微应变。碱活化粉煤灰混凝土在固化的前24小时内的总早期收缩率在1460微应变时要比混合水泥混凝土的2800微应变要低。使用这种不含硅酸盐水泥的材料来生产预制混凝土构件可以利用大量的粉煤灰，并有可能减少最终产品的碳足迹。

著录项

  • 来源
    《Magazine of Concrete Research》 |2015年第16期|897-905|共9页
  • 作者

    Shekhovtsova Julia; Kovtun Maxim; Kearsley Elsabe P.;

  • 作者单位

    Univ Pretoria, Dept Civil Engn, ZA-0002 Pretoria, South Africa;

    Univ Pretoria, Dept Civil Engn, ZA-0002 Pretoria, South Africa;

    Univ Pretoria, Dept Civil Engn, ZA-0002 Pretoria, South Africa;

  • 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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号