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Journal of Thermal Analysis and Calorimetry

, Volume 131, Issue 3, pp 2337–2343 | Cite as

Effect of early-strength-enhancing agents on setting time and early mechanical strength of belite–barium calcium sulfoaluminate cement

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Abstract

Belite–barium calcium sulfoaluminate (C2.75B1.25A3$) cement is a new type of belite-rich cement with great long-term mechanical performance and good durability. Its early-age mechanical property was found to be comparable to that of Grade 32.5 ordinary Portland cement. In order to further improve its early hydration activity, the effect of two known early-strength agents on the performance of the belite–barium calcium sulfoaluminate cement was investigated by means of XRD, pore structure and TGA. It was found that Na2SO4 and Ca(HCOO)2 can be used as an early-strength-enhancing agents for this type of cement with the best dosage of 0.5 and 2.0% by weight, respectively. Ca(HCOO)2 was preferable to this type of cement from the durability point of view.

Keywords

C2.75B1.25A3Belite Na2SO4 Ca(HCOO)2 

Notes

Acknowledgements

This work is supported by the 13th Five-Year the state key development program (2016YFB0303505), Natural Science Foundations of China (51672108), 111 Project of International Corporation on Advanced Cement-based Materials (No. D17001), the Shandong Province Bold Talent Program (ZR2015EM002) and postdoctor program of University of Jinan (XBH1718). We also thank Program for Scientific Research Innovation Team in Colleges and Universities of Shandong Province.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2017

Authors and Affiliations

  1. 1.Shandong Provincial Key Laboratory of Preparation and Measurement of Building MaterialsUniversity of JinanJinanChina
  2. 2.Shandong Institute for Product Quality InspectionJinanChina

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