A Double-Blade Mixer for Concrete with Improved Mixing Quality

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• 作者：Yunshi Yao ; Zhongxu Feng ; Shibin Chen…
• 关键词：Concrete ; Double ; blade mixer ; Mixing quality ; Compressive strength ; Microstructure
• 刊名：Arabian Journal for Science and Engineering
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：41
• 期：12
• 页码：4809-4816
• 全文大小：1,432 KB
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Mathematics
  Science, general
  
• 出版者：Springer Berlin / Heidelberg
• 卷排序：41

文摘

The paper intends to present a design of a double-blade mixer for the purpose of reinforce concrete mixing quality. The result of comparison experiment on mixing quality of three different types of concrete with the use of different mixers shows that mixing quality of the concrete using a double-blade mixer is better than that of using ordinary biaxial mixer. The compressive strength of C20 with filling rate of 31% is improved by 14.8% and that of C30 by 14.2%. Moreover, the compressive strength of roller compacted concrete is increased by 13.7%. The double-blade mixer used in macrostructure and SEM of the concrete could provide good binding to both the aggregates and the cement paste with few cracks between them which would form crushing destruction of its aggregate instead of interface. Furthermore, the double-blade mixer could provide faster uniform mixing at macro- and microscales, reinforce concrete microstructure and improve its compressive strength.