期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 121, 期 -, 页码 328-337出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2016.06.006
关键词
Limestone; Interground; Blended; Hydration; CEMHYD3D; Pore structure; Rosin-Rammler distribution
资金
- National Science Foundation [CMMI: 1068985]
- Laboratory for the Science of Sustainable Infrastructural Materials at Arizona State University
This paper compares the performance of commercial interground Portland-limestone cements (PLC) to those of blended limestone systems. Limestone of four different median sizes is mixed with ordinary portland cement (OPC) to create blends in an attempt to match the particle size distribution of the PLCs. The interground systems are found to outperform the blended systems, plausibly because of the difference in size distributions of the clinker and limestone fractions between the PLCs and the blended systems. A novel methodology to extract the particle size distributions of the components in the interground systems is reported. This method, applicable for several types of multi-component powder systems, considers Rosin-Rammler size distributions for the ground clinker and limestone, and optimizes the parameters of the distribution to obtain a composite distribution of the same fineness as the interground system. The model is verified using a cement hydration and microstructure model. (C) 2016 Elsevier Ltd. All rights reserved.
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