Investigation of the Effect of Ulexite Additive on the Mechanical Strength and Thermal Conductivity of Cement Mortar

Year 2024, Volume: 28 Issue: 4, 697 - 707

Ahmet Filazi Muharrem Pul Zühtü Onur Pehlivanlı İbrahim Uzun

https://doi.org/10.16984/saufenbilder.1228699

Abstract

In this study, the effect of ulexite substitution in cement mortar and its physical and mechanical properties on cement mortar properties were investigated. First of all, the pozzolanic activity of the ulexite material was determined. Then, cement mortars with ulexite additives at different rates (0.5%, 1%, 2%, 4%); Specific gravity, specific surface, setting start and end times, consistency and expansion tests, as well as 7 and 28 days flexural and compressive strength of the mortar samples were determined and compared with the control sample. As a result of the study, with the increase of the ulexite substitution ratio, the set start and set expiration times were extended, and all of the ulexite-substituted cement mortars provided the lowest mechanical strength required in related standard. It was observed that the cement mortars with 0.5%, 1%, 2% ulexite substituted cement mortars exceeded the reference sample and the best replacement rate was in the mortars with 0.5% replacement. However, depending on the increase in the ulexite substitution ratio, a decrease in mechanical strength was detected among themselves. According to the results obtained from the thermal conductivity tests, the thermal conductivity values of the cement mortars decreased with the ulexite substitution. Depending on the ulexite substitution rate, the thermal conductivity value decreased by approximately 50%. The lowest thermal conductivity value was measured in the test sample with 4% ulexite substitute.

Keywords

Ulexite, Pozzolanic activity, Compressive strength, Flexural strength, Thermal conductivity

References

• T. Mutuk, B. Mesci, “Analysis of mechanical properties of cement containing boron waste and rice husk ash using full factorial design,” Journal of Cleaner Production, vol. 69, pp. 128–132, Apr. 2014. B. Dündar, E. Çınar, “Farklı Mineral Katkılı Hafif Harçların Mekanik ve Fiziksel Özelliklerine Yüksek Sıcaklığın Etkisi,” Türk Doğa ve Fen Dergisi, vol. 9, no. 2, pp. 42–49, 2020.
• C. Helvaci, “Borate deposits: An overview and future forecast with regard to mineral deposits,” Journal of Boron, vol. 2, no. 2, pp. 59–70, 2017.
• G. Guzel, O. Sivrikaya, H. Deveci, “The use of colemanite and ulexite as novel fillers in epoxy composites: Influences on thermal and physico-mechanical properties,” Composites Part B: Engineering, vol. 100, pp. 1–9, Sep. 2016.
• I. Y. Elbeyli, E. M. Derun, J. Gülen, S. Pişkin, “Thermal analysis of borogypsum and its effects on the physical properties of Portland cement,” Cement and Concrete Research, vol. 33, no. 11, pp. 1729–1735, Nov. 2003.
• A. Aldakshe, H. Çağlar, A. Çağlar, Ç. Avan, “The investigation of use as aggregate in lightweight concrete production of boron wastes,” Civil Engineering Journal., vol. 6, no. 7, pp. 1328–1335, 2020.
• S. E. Chidiac, M. G. El-Samrah, M. A. Reda, M. A. E. Abdel-Rahman, “Mechanical and radiation shielding properties of concrete containing commercial boron carbide powder,” Construction and Building Materials, vol. 313, no. June, p. 125466, 2021.
• Ç. Targan, A. Olgun, Y. Erdoğan, V. Sevinç, “Effects of supplementary cementing materials on the properties of cement and concrete,” Cement and Concrete Research, vol. 32, no. 10, pp. 1551–1558, Oct. 2002.
• Y. Erdoǧan, M. S. Zeybek, A. Demirbas, “Cement Mixes Containing Colemanite from Concentrator Wastes,” Cement and Concrete Research, vol. 28, no. 4, pp. 605–609, Apr. 1998.
• B. Çomak, A. Bideci, Ö. Salli Bideci, “Effects of hemp fibers on characteristics of cement based mortar,” Construction and Building Materials, vol. 169, pp. 794–799, Apr. 2018.
• R. Boncukcuoǧlu, O. Içelli, S. Erzeneoǧlu, M. Muhtar Kocakerim, “Comparison of radioactive transmission and mechanical properties of Portland cement and a modified cement with trommel sieve waste,” Cement and Concrete Research, vol. 35, no. 6, pp. 1082–1087, Jun. 2005. A. Filazi, M. Pul, “Effect of Borax Pentahydrate Substitution on Sound proofing and Mechanical Properties of Cement Mortar,” Uluslararası Muhendislik. Araştırma ve Geliştirme Dergisi, vol. 14, no. 2, pp. 604–610, Jul. 2022.
• I. Kula, A. Olgun, V. Sevinc, Y. Erdogan, “An investigation on the use of tincal ore waste, fly ash, and coal bottom ash as Portland cement replacement materials,” Cement and Concrete Research, vol. 32, no. 2, pp. 227–232, Feb. 2002.
• Ş. Targan, A. Olgun, Y. Erdoğan, V. Sevinç, “Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement,” Cement and Concrete Research, vol. 33, no. 8, pp. 1175–1182, Aug. 2003.
• U. K. Sevim, M. Özturk, M. B. Bankir, U. Aydin, “Utilization of Colemanite waste in Concrete Design,” International Journal of Advanced Engineering Research and Science, vol. 4, no. 12, pp. 172–175, 2017.
• J. V. Bothe, P. W. Brown, “Phase formation in the system CaO–Al2O3–B2O3–H2O at 23±1°C,” Journal of Hazardous Materials, vol. 63, no. 2–3, pp. 199–210, Dec. 1998.
• T. Piotrowski, J. Glinicka, M. A. Glinicki, P. Prochoń, “Influence of gadolinium oxide and ulexite on cement hydration and technical properties of mortars for neutron radiation shielding purposes,” Construction and Building Materials, vol. 195, pp. 583–589, Jan. 2019.
• Standard, B. (2003). British Standard Methods of testing cement.
• TS EN 196-6. (2010). Methods of testing cement–part 6: determination of fineness.
• Turkish Standard Institute-TSE. (2002). TS EN 196-1: methods of testing cement: part 1: determination of strength.
• TSE, T. (2011). Natural pozzolan (Trass) for use in cement and concrete-Definitions, requirements and conformity criteria. Turkish Standard Institute. Ankara, Turkey.
• TSE, (2002). TS EN 196-2: Methods of testing cement. Part 2: Chemical analysis of cement.
• EN, T. (2017). 196-3. Methods of testing cement-Part, 3.
• EN, T. (2003). 12667 Turkish Standards Institute. Thermal performance of building materials and products.
• H. E. Pehlivanoğlu, M. Davraz, Ş. Kılınçarslan, "The effect of boron compound to settıng time of cement and controllability,” International Journal of Technologic Sciences, vol. 5, no. 3, pp. 39-48, 2013.
• O. Gencel, W. Brostow, C. Ozel, M. Filiz, “An investigation on the concrete properties containing colemanite,” International Journal of Physical Sciences, vol. 5, no. 3, pp. 216–225, 2010.
• N. Yaltay, C. E. Ekinci, “Investigation Of Compression Strength Of Lightweight Concrete, Subjected To Elvated Temperature, Produced With Pumice Agregate And Colemanite Addition By Non-Destructive Method,” Süleyman Demirel University International Journal of Technologic Sciences, vol. 5 no. 2, pp. 30-41, 2013.
• Ustabaş, İ., "Investigation of the Usability of Colemanite and Ulexite in Cement", Ready-Mixed Concrete Congress, Istanbul, 2011.
• H. F. W Taylor, “Cement chemistry,” 2nd ed., Thomas Telford publishing, London, 1997.
• E. Erdogmus, “Combined effect of waste colemanite and silica fume on properties of cement mortar,” Science and Engineering of Composite Materials, vol. 21, no. 3, pp. 369–375, 2014.
• İ. Yakar Elbeyli, “Utilization of Industrial Borax Wastes (BW) for Portland Cement Production,” The Turkish Journal of Engineering & Environmental Sciences, vol. 28, pp. 281-287, 2004.
• O. Aksoğan, H. Binici, E. Ortlek, “Durability of concrete made by partial replacement of fine aggregate by colemanite and barite and cement by ashes of corn stalk, wheat straw and sunflower stalk ashes,” Construction and Building Materials, vol.106, pp.253-263, 2016.
• M. Davraz, “The effect of boron compound on the properties of cementitious composites,” Science and Engineering of Composite Materials, vol.17, no. 1, pp. 1-17, 2010.