Roads and Bridges - Drogi i Mosty
19, 2, 2020, 135-147

Testing the cement, hydrated lime and cement by-pass dust mixtures hydration

Zdzisława Owsiak Mail
Kielce University of Technology, Department of Building Engineering Technologies and Organization, 7 Tysiąclecia Państwa Polskiego Av., 25-314 Kielce
Przemysław Czapik Mail
Kielce University of Technology, Department of Building Engineering Technologies and Organization, 7 Tysiąclecia Państwa Polskiego Av., 25-314 Kielce
Justyna Zapała-Sławeta Mail
Kielce University of Technology, Department of Building Engineering Technologies and Organization, 7 Tysiąclecia Państwa Polskiego Av., 25-314 Kielce
Published: 2020-06-30

Abstract

The paper reports the results of the tests used to determine hydration kinetics, physical properties and microstructure of hydraulic road binders. Seven hydraulically bound mixes were produced by mixing Portland cement (CEM I 32.5R), hydrated lime, and cement by-pass dust (CBPD) in proportions established as per the experimental plan. Cement by-pass dust was found to have the greatest effect on the increased water demand, hydration heat and soundness of the binder paste. Minerals derived from the hydration of input components were identified in the composition of the binder phases. In CBPD rich binders sylvite and calcium chloro-aluminate hydrate were present. The test results show that when planning the use of normal setting hydraulic road binders containing CBPD in road construction, the water to binder ratio w/b must be taken into account to ensure proper consistency, soundness, and amount of hydration heat release.

Keywords


cement by-pass dust, hydration kinetics, hydraulic road binders, microstructure, physical properties.

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References


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Testing the cement, hydrated lime and cement by-pass dust mixtures hydration

  
Owsiak, Zdzisława; Czapik, Przemysław; Zapała-Sławeta, Justyna. Testing the cement, hydrated lime and cement by-pass dust mixtures hydration. Roads and Bridges - Drogi i Mosty, [S.l.], v. 19, n. 2, p. 135-147, jun. 2020. ISSN 2449-769X. Available at: <>. Date accessed: 29 Oct. 2020. doi:http://dx.doi.org/10.7409/rabdim.020.009.