• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Construction research congress >Study of the Potential of Ethiopian Rice Husks as a Partial Replacement of Cement
【24h】

Study of the Potential of Ethiopian Rice Husks as a Partial Replacement of Cement

机译：埃塞俄比亚稻壳作为水泥的部分替代品的潜力研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Considerable efforts are currently being undertaken worldwide to utilize Rice Husk as an alternative cementitious material. Although the use of Rice Husk Ash (RHA) has been practiced since the 1980's, an investigation of this supplementary cementitious material has not been assessed in the developing world. In this study, a detailed experimental analysis is conducted to determine the compressive strength and workability of concrete by partially replacing Ordinary Portland Cement with RHA as part of a case study in the Ethiopian construction industry. Two control mixes, and cubes with varying RHA proportions of 5, 10, 15, and 20% and including admixture are tested to attain a compressive strength of 25 MPa. The cubes are cured in a laboratory setting and compressive strength measures of 3, 7, 28, and 56 days are recorded. The results indicate that 5 to 15% of RHA replacement shows a better compressive strength than the control mixes at 28 and 56 days but the workability decreases with an increase in RHA replacement which aligns with prior studies. This study will allow the development of a mix ratio and considerations in design standards not only to the Ethiopian construction industry but also other developing countries in Sub-Saharan Africa.
机译：目前，世界范围内正在做出相当大的努力来利用稻壳作为替代水泥材料。尽管自1980年代以来就开始使用稻壳灰（RHA），但在发展中国家尚未对该补充胶凝材料进行调查。在这项研究中，进行了详细的实验分析，以确定混凝土的抗压强度和可加工性，方法是用埃塞俄比亚建筑行业的案例研究的一部分，用RHA代替普通硅酸盐水泥。测试了两种对照混合物，以及具有5％，10％，15％和20％的RHA比例（包括混合物）的立方体，以获得25 MPa的抗压强度。在实验室环境中将立方体固化，并记录3、7、28和56天的抗压强度。结果表明，在28天和56天，RHA替代的5％至15％表现出比对照混合物更好的抗压强度，但随着RHA替代的增加，可加工性降低，这与先前的研究一致。这项研究不仅可以为埃塞俄比亚的建筑业，而且可以为撒哈拉以南非洲的其他发展中国家制定混合比并考虑设计标准。

著录项

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