Investigation of NWC and Structural LWC Using Local Material in the UAE Exposed to Elevated Temperatures

Abstract:

In response to the rapid urbanization and local boom in UAE’s development and real estate industry, concrete is continuously in demand in alarming amounts contributing to the climate change effect. Research has continuously shown that lightweight concrete (LWC) is a potential sustainable alternative for normal weight concrete (NWC) due to incorporation of cement alternatives within the mix, higher resource efficiency, and enhanced thermal insulation. This paper investigates the residual properties of NWC and structural LWC at room temperature and when exposed to the following steady-state temperatures: 100°C, 200°C, 400°C, 600°C, and 800°C. Results show that LWC exhibit higher fire performance than NWC. At failure, NWC specimens majorly reported cone and split failure modes. The LWC specimens displayed mostly columnar failure modes. Spalling of concrete was first reported at 600°C on LWC at the corners of the specimens. At 800°C, surface spalling was reported on NWC only, indicating the higher fire resistive property of LWC. After heat exposure, discoloration was first observed in all specimens at 400°C. The compressive strength of both types of concrete initially increased after high-temperature exposure. Residual strength reported increase up to 200°C and 400°C for NWC and LWC, respectively. Consequently, significant decrease in compressive strength reaching around 20% of the original compressive strength when exposed to 800°C. Results showed that NWC experiences more reduction in residual strength than LWC, supporting that LWC is a promising construction material in enhancing structural fire safety.

• Periodical: Materials Science Forum (Volume 1142)
• Pages: 127-136
• DOI: https://doi.org/10.4028/p-wZjQ8Q
• Online since: December 2024
• Authors: Hind Alharmoodi*, Rami Hawileh, Abdallah Hajjaj, Abdulaziz Aljarwan, Jamal A. Abdallah
• Keywords: Compressive Strength, Concrete Fire Performance, Residual Properties, Structural Fire Safety, Structural Lightweight Concrete

References

[1] D.N. Brushlinsky, "World Fire Statistics Estadísticas Mundiales de Bomberos Die Feuerwehrstatistik der Welt," p.65, 2022.

[2] A. Alhamad, S. Yehia, É. Lublóy, and M. Elchalakani, "Performance of Different Concrete Types Exposed to Elevated Temperatures: A Review," Materials, vol. 15, no. 14, p.5032, Jul. 2022.

DOI: 10.3390/ma15145032

[3] F. Dabbaghi, S. Nasrollahpour, M. Dehestani, and H. Yousefpour, "Optimization of Concrete Mixtures Containing Lightweight Expanded Clay Aggregates Based on Mechanical, Economical, Fire-Resistance, and Environmental Considerations," J. Mater. Civ. Eng., vol. 34, no. 2, p.04021445, Feb. 2022.

DOI: 10.1061/(ASCE)MT.1943-5533.0004083

[4] H. Huang, Y. Yuan, W. Zhang, B. Liu, A. Viani, and P. Mácová, "Microstructure investigation of the interface between lightweight concrete and normal-weight concrete," Mater. Today Commun., vol. 21, p.100640, Dec. 2019.

DOI: 10.1016/j.mtcomm.2019.100640

[5] A. Tanhadoust, T. Yang, F. Dabbaghi, H. K. Chai, M. Mohseni, S. Emadi, and S. Nasrollahpour, "Predicting stress-strain behavior of normal weight and lightweight aggregate concrete exposed to high temperature using LSTM recurrent neural network," Construction and Building Materials, vol. 362, p.129703, Jan. 2023.

DOI: 10.1016/j.conbuildmat.2022.129703

[6] M. Shahpari, P. Bamonte, and S. Jalali Mosallam, "An experimental study on mechanical and thermal properties of structural lightweight concrete using carbon nanotubes (CNTS) and LECA aggregates after exposure to elevated temperature," Construction and Building Materials, vol. 346, p.128376, Sep. 2022.

DOI: 10.1016/j.conbuildmat.2022.128376

[7] A. Mousa, M. Mahgoub, and M. Hussein, "Lightweight concrete in America: presence and challenges," Sustain. Prod. Consum., vol. 15, p.131–144, Jul. 2018.

DOI: 10.1016/j.spc.2018.06.007

[8] R. A. Hawileh, A. Al Rashed, H. H. Mhanna, and J. A. Abdalla, "Properties of concrete with partial replacement of cement with different percentages of micro silica and nano silica," Materials Today: Proceedings, Apr. 2023.

DOI: 10.1016/j.matpr.2023.04.077

[9] F. Wegian, "Strength properties of lightweight concrete made with Leca grading," Australian Journal of Civil Engineering, vol. 10, no. 1, 2012.

DOI: 10.7158/c10-668.2012.10.1

[10] R. A. Hawileh, J. A. Abdalla, W. Nawaz, A. Sharif Zadeh, A. Mirghani, A. Al Nassara, A. Khartabil, and M. Shantia, "Effects of replacing cement with GGBS and fly ash on the flexural and shear performance of reinforced concrete beams," Practice Periodical on Structural Design and Construction, vol. 29, no. 2, May 2024.

DOI: 10.1061/ppscfx.sceng-1339

[11] V. Kodur, "Properties of Concrete at Elevated Temperatures," Int. Sch. Res. Not., vol. 2014, p. e468510, Mar. 2014.

DOI: 10.1155/2014/468510

[12] Z. Guo, "Chapter 19 - Fire Resistance," in Principles of Reinforced Concrete, Z. Guo, Ed., Oxford: Butterworth-Heinemann, 2014, p.475–520.

DOI: 10.1016/B978-0-12-800859-1.00019-0

[13] H. Hostetter, M. Z. Naser, R. A. Hawileh, G. Karaki, and H. Zhou, "Enhancing fire resistance of reinforced concrete beams through sacrificial reinforcement," Architecture, Structures and Construction, vol. 2, no. 2, p.311–322, Jul. 2022.

DOI: 10.1007/s44150-022-00061-w

[14] R. A. Hawileh, S. Quadri, J. A. Abdalla, M. Assad, B. Thomas, D. Craig, and M. Z. Naser, "Residual mechanical properties of recycled aggregate concrete at elevated temperatures," Fire and Materials, vol. 48, no. 1, p.138–151, Jun. 2023.

DOI: 10.1002/fam.3168

[15] M. Zhang, L. Zhu, S. Gao, T. Liu, and H. Yuan, "Mechanical properties, microstructure, and environmental assessment of recycled concrete from aggregate after fire," Construction and Building Materials, vol. 425, p.136074, Apr. 2024.

DOI: 10.1016/j.conbuildmat.2024.136074

[16] G. Kim, G. Choe, M. Yoon, and T. Lee, "Mechanical properties of light weight concrete at elevated temperature," International Journal of Precision Engineering and Manufacturing, vol. 16, no. 8, p.1867–1874, Jul. 2015.

DOI: 10.1007/s12541-015-0243-6

[17] R. El-Hacha, M. F. Green, and G. R. Wight, "Effect of Severe Environmental Exposures on CFRP Wrapped Concrete Columns," J. Compos. Constr., vol. 14, no. 1, p.83–93, Feb. 2010.

DOI: 10.1061/(ASCE)CC.1943-5614.0000074

[18] J. Lee, K. Choi, and K. Hong, "The effect of high temperature on color and residual strength of concrete," in Fracture Mechanics of Concrete and Concrete Struct., Jeju, North Korea, May 23-28, 2010.

[19] I. Hager, "Colour Change in Heated Concrete," Fire Technol., vol. 50, no. 4, p.945–958, Jul. 2014.

DOI: 10.1007/s10694-012-0320-7

[20] E. Sancak, Y. Dursun Sari, and O. Simsek, "Effects of elevated temperature on compressive strength and weight loss of the light-weight concrete with silica fume and superplasticizer," Cem. Concr. Compos., vol. 30, no. 8, p.715–721, Sep. 2008.

DOI: 10.1016/j.cemconcomp.2008.01.004

[21] H. Tanyildizi and A. Coskun, "The effect of high temperature on compressive strength and splitting tensile strength of structural lightweight concrete containing fly ash," Constr. Build. Mater., vol. 22, no. 11, p.2269–2275, Nov. 2008.

DOI: 10.1016/j.conbuildmat.2007.07.033

[22] Standard Practice for Making and Curing Concrete Test Specimens in the Field, ASTM C31/31M. 2019.

[23] Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, C39/C39M. 2012.

[24] Standard Practice for Capping Cylindrical Concrete Specimens, C617/C617M. 2015.