Setting behavior of blended cement with limestone: influence of particle size and content

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• 作者：Yaniv Knop ; Alva Peled
• 关键词：Packing density ; Hydration degree ; Limestone ; Blended cement
• 刊名：Materials and Structures
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：49
• 期：1-2
• 页码：439-452
• 全文大小：1,467 KB
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• 作者单位：Yaniv Knop (1)
  Alva Peled (1)
  
  1. Structural Engineering Department, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beersheba, Israel
  
• 刊物类别：Engineering
• 刊物主题：Structural Mechanics
  Theoretical and Applied Mechanics
  Mechanical Engineering
  Operating Procedures and Materials Treatment
  Civil Engineering
  Building Materials
  
• 出版者：Springer Netherlands
• ISSN：1871-6873

文摘

The combined effects of particle size, surface area, and limestone content on the properties of blended cement with limestone were studied. Limestone powders with six different particle diameters and surface areas relative to the cement particles were tested: two sizes smaller with greater surface area, two sizes larger with less surface area, and two sizes similar to the original cement particle. Two systems were studied: blended cement with limestone consisting of one particle size distribution and limestone consisting of a combination of three particle sizes. The setting history and hydration degree were examined using a Vicat needle apparatus and performing Rietveld quantitative phase analysis of X-ray diffraction. The packing density of the different pastes was calculated based on the amount of water required for normal consistency. It was shown that the properties of blended cements with different particle sizes were affected significantly by two mechanisms: nucleation and packing density. These two mechanisms affected the chemical and physical properties of the blended cement by altering its setting rates.