Modified supersulfated cements

Authors

  • Leonid Dvorkin National University of Water and Environmental Engineering, Rivne, Ukraine Author
  • Lyudmila Nihaeva National University of Water and Environmental Engineering, Rivne, Ukraine Author

DOI:

https://doi.org/10.5937/zasmat2104340D

Keywords:

blast furnace slag, sulfate activators, phosphogypsum, hardening accelerators, superplasticizer, lime, supersulfated cement, properties

Abstract

The paper presents the results of experimental studies of the possibility of obtaining modified supersulfate cements (SSC) with improved physical and mechanical properties on lowalumina blast-furnace granular slags. It has been shown in comparative experimental tests of the effect of admixtures of various sulfate activators that the highest strength of cements is achieved when using a phosphogypsum neutralized with lime. An additional activating effect has been established for supersulfated cements with the introduction of admixtures fluorides and, in particular, fluorides of magnesium, calcium and sodium silicofluoride. The additional introduction of hardening accelerators and their compositions with a superplasticizer into the SSC composition makes it possible to increase the compressive strength of cements at 28 days of age up to 60-65 MPa while achieving high strength at an early age. Along with standard tests, experiments were performed using mathematical planning with obtaining adequate regression equations.

References

Bijen, J., Niël, E. (1981) Supersulphated cement from blastfurnace slag and chemical gypsum available in the Netherlands and neighbouring countries.Cement and Concrete Research, 11(3), 307-322

https://doi.org/10.1016/0008-8846(81)90104-6

Dvorkin, L., Dvorkin, O., Ribakov, Y. (2012) Mathematical experiments in concrete technology. New York: Nova Science Publishers

Dvorkin, L., Dvorkin, O. (2011) Building mineral binders. Moscow: Infra-Engineering

Erdem, E., Ölmez, H. (1993) The mechanical properties of supersulphated cement containing phosphogypsum.Cement and Concrete Research, 23(1), 115-121

https://doi.org/10.1016/0008-8846(93)90141-U

Gazdić, D. (2013) Slag-sulphate binder.Preparation, Advanced Material Research, 818, 68-71

https://doi.org/10.4028/www.scientific.net/AMR.818.68

Locher, F. (2006) Cement: Principles of production and use. Dusseldorf: Verlag Bau

Mehrotra, V.P., Sai, A.S.R., Kapur, P.C. (1982) Plaster of Paris activated supersulfated slag cement.Cement and Concrete Research, 12 (4), 465-471

https://doi.org/10.1016/0008-8846(82)90061-8

Nquen, H., Chang, T., Shin, J., Chen, C. (2016) Formulating for innovative self-compacting concrete with low energy super sulfated cement used for sustainability development.Journal of Material Science and Chemical Engineering, 4(7), 22-28

https://doi.org/10.4236/msce.2016.47004

Pashenko, A., Serbin, P., Starchevskya, O. (1995) Binders substances. Kiev: High School

Reinsdorf, S. (1962) Properties and utilization of supersulfated slag cement.Bauplan-Bautechn, 16(5), 230-234

Schwiete, H., Ludwig, U., Otto, P. (1971) Investigations on super sulfated slag cements. Opladen: West-dentscher Verl

Stark, S. (1999) Modern concrete materials: Binders, additions and admixtures. London: Thomas Telford Ltd

Svatovskya, L., Sychev, M. (1983) Activated hardening of cements. S-Peterburg

Volzhensky, A., Burov, M., Colokolnicov, V. (1973) Mineral binders (technology and properties). S-Peterburg: Stroyizdat

Wu, Q., Xue, Q., Yu, Z. (2021) Research status of super sulfate cement.Journal of Cleaner Production, 294, 126-128

https://doi.org/10.1016/j.jclepro.2021.126228

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Published

15-12-2021

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