Study on Influence of Limestone Powder on the Fresh and Hardened Properties of Early Age Metakaolin Based Geopolymer

  • Jiang QianEmail author
  • Mu Song
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 10)


The objective of this study is to evaluate the effect of limestone powder as a filler material on the fresh and hardened properties of early-age geopolymer. The geopolymer was prepared by alkali activating metakaolin added with limestone filler from 10 % to 30 % by weight. It was found that the incorporation of limestone powder improved the fluidity and strength. 10 % addition of limestone powder increased 17.43 % and 14.36 % of the 7d compressive and flexural strength respectively, and the sample with 15 % addition improved the fluidity of fresh geopolymer distinctly. The mechanism of limestone powder as filler material on the enhancement of properties of geopolymer was investigated by using X-ray diffraction analysis and scanning electron microscopy. The delayed formation of amorphous products with an increased prominence of calcite and a more compacting structure were observed from the XRD and SEM results. Thus the rheology property and the strength development were both promoted due to a better particle size distribution as the extra LS was added.


Limestone Powder Potassium Silicate Hardened Property Limestone Filler Amorphous Product 
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Authors appreciate the financial supports from the China Postdoctoral Science Foundation under the contract No. 2013M531296, and the Postdoctoral Science Foundation of Jiangsu Province under the contract No. 1301160C).


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© RILEM 2015

Authors and Affiliations

  1. 1.State Key Laboratory of High Performance Civil Engineering MaterialsJiangsu Research Institute of Building ScienceNanjingPeople’s Republic of China
  2. 2.Jiangsu SOBUTE New Materials Co., Ltd.NanjingPeople’s Republic of China

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