The Effect of Boron Compound to Cement Hydration and Controllability of this Effect

• Authors: M. Davraz
• Languages of publication: EN

Abstracts

EN

The use of boron compounds as composites of cementitious, except for the limited usage conditions like setting retarder has not become widespread because of the hardening and the related problems. In this study, the effects of the boron compounds into hydration process of the different cement types and controllability of these effects was investigated. Portland cement, boron modified active belite cement, and calcium aluminate cement were used in the mortar mixtures as binder material. Except for the control mixture, boric acid (BA) was used at the ratios of 0.25-1.00% of weight of cement in mortar mixtures with Portland cement. Setting times dependent on pH, EC and T changes of fresh mortars were measured. With increasing BA concentration, setting times of the mortars rather increased, pH, electrical conductivity, and T values of the mortars significantly reduced. To suppress the affect of BA on the hydration process, the two various stabilizers were used in the mortars, setting times, pH, electrical conductivity, and T values of these mortars were measured again. As a result, the optimum workability times and the parameters of the hydration reaction taking into account, the most suitable type and usage ratio of stabilizer were determined for mortars with BA.

Keywords

EN

81.05.Mh

Discipline

• 81.05.Mh: Cermets, ceramic and refractory composites

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 2B
• Pages: B-26-B-33

Dates

published

2015-8

Contributors

author

M. Davraz

• Suleyman Demirel University, Natural and Industrial Building Materials Application and Research Center, Isparta, Turkey

References

• [1] S. Bell, P.V. Coveney, Molecular Simulation, Informa, UK 1998, p. 331, doi: 10.1080/08927029808022042
• [2] I. Kula, A. Olgun, V. Sevinc, Y. Erdogan, Cem. Concr. Res. 32, 227 (2002), doi: 10.1016/S0008-8846(01)00661-5
• [3] Ş. Targan, A. Olgun, Y. Erdoğan, V. Sevinç, Cem. Concr. Res. 33, 1175 (2003), doi: 10.1016/S0008-8846(03)00025-5
• [4] A. Sağlık, O. Sümer, E. Tunç, M.F. Kocabeyler, R.S. Çelik, DSI technical bulletin, Vol. 105, Ankara 2009
• [5] D.E. Volkman, P.L. Bussolini, JTE 20, (1992), doi: 10.1520/JTE11903J
• [6] D. Demir, G. Keleş, Nucl. Instrum. Methods Phys. Res. B 245, 501 (2006), doi: 10.1016/j.nimb.2005.11.139
• [7] BOREN, 'Bor ve çimento', http://www.eie.gov.tr/duyurular/EV/EV_etkinlik/2008_bildiriler/04-OTURUM_ve_AR-GE/0403.pdf
• [8] H.F.W. Taylor, Cement Chemistry, 2nd ed., Thomas Telford Pub., London 1997, doi: 10.1680/cc.25929
• [9] J.R. Conner, Chemical Fixation and Solidification of Hazardous Wastes, Van Nostrand Reinhold, New York 1990, doi: 10.1016/0304-3894(92)87086-U
• [10] J. Jeffrey, L. Garner, W. House, Waste Manag. 2, 359 (1991), doi: 10.1016/j.wasman.2006.01.020
• [11] Analyses Results of Monthly (November) BAB Cement in GOLTAS Cement Co. Operation, Isparta 2007
• [12] Analyses Results of Monthly Cement in GOLTAS Cement Co. Operation, Isparta 2009
• [13] TS EN 196-3, Methods of testing cement-part 3: Determination of setting time and soundness, Turkish Standard Institute TSE, Ankara 2003

Identifiers

DOI

10.12693/APhysPolA.128.B-26