EFFECT OF TIME ELAPSED BETWEEN SUCCESSIVE CONCRETE POURINGS AND LOCATION OF THE COLD JOINTS ON THE FLEXURAL CAPACITY OF RC BEAMS
DOI:
https://doi.org/10.11113/jurnalteknologi.v86.21966Keywords:
Cold joint, compression fibre, tension fiber, time elapsed, flexural strengthAbstract
This research investigates the effect of the time interval between successive concrete pouring and the position of cold joints on properties and bending strength capacity in reinforced beams. Two horizontal cold joints were examined: another positioned in the zone of compressions (h=110 mm) and one situated in the beam's tension area ( h = 50mm). In both cold joint elevations, the time interval between two mert patches was varied as 1.5 hrs.,3 hr and 4 hrs. Furthermore, six nominally standardized RC beams were tested and analyzed with a reference beam devoid of cold joints. The obtained outcomes revealed the decrease of beams' ultimate flexural capacity with an increase in time elapsed between periods of pouring from 1.5 to 4.5 hours. The reduction in flexural strength was more evident when a cold joint went through the compression fibre of a beam. Additionally, the hardness and rigidity of the tested beams roughly inversely correlated with time intervals between consecutive pourings. More specifically, the percentage reduction in ultimate load, stiffness and toughness of cold joints for tension fibres at 1.5 hours was (4.36% ,9.7% and 9.3%) while that of compression fibre was (5.36%),(34.2%)and ( 34.5% ) % respectively when compared with control beam.
References
Hashemi, M., Shafigh, P., Karim, M. R. Bin, Atis, C. D. 2018. The Effect of Coarse to Fine Aggregate Ratio on the Fresh and Hardened Properties of Roller-compacted Concrete Pavement. Construction and Building Materials. 169: 553-66.
Ayuta, K., Hayashi. M. 1985. An Experimental Study on Strength of Concrete Surface by Drying. Transactions of the Japan Society of Civil Engineers. 15(3): 510-1.
Vanlalruata, J., Marthong, C. 2021. Effect of Cold Joint on the Flexural Strength of RC Beam. Journal of Structural Integrity and Maintenance. 6(1): 28–36. Available from: https://doi.org/10.1080/24705314.2020.1823556.
Volz, J. S., Olson, C. A., Oesterle, R. G., Gebler, S. H. 1997. Are they Pour Lines or Cold Joints. Concrete Construction Magazine.
Choi, S. J., Kang, S. P., Kim, S. C., Kwon, S. J. 2015. Analysis Technique on Water Permeability in Concrete with Cold Joint Considering Micro Pore Structure and Mineral Admixture. Advances in Materials Science and Engineering.
Yang, H. M., Lee, H. S., Yang, K. H., Ismail, M. A., Kwon, S. J. 2018. Time and Cold Joint Effect on Chloride Diffusion in Concrete Containing GGBFS under Various Loading Conditions. Construction and Building Materials. 167: 739-48. https://doi.org/10.1016/j.conbuildmat.2018.02.093.
Lee, H. S., Jang, H. O., Cho, K. H. 2016. Evaluation of Bonding Shear Performance of Ultra-high-performance Concrete with Increase in Delay in Formation of Cold Joints. Materials. 9(5): 362.
Illangakoon, G. B., Asamoto, S., Nanayakkara, A., Trong, L. N. 2019. Concrete Cold Joint Formation in Hot Weather Conditions. Construction and Building Materials. 209: 406-15.
Yoo, S. W., Kwon, S. J. 2016. Effects of Cold Joint and Loading Conditions on Chloride Diffusion in Concrete Containing GGBFS. Construction and Building Materials. 115: 247-55. http://dx.doi.org/10.1016/j.conbuildmat.2016.04.010.
Li, G., Xie, H., Xiong, G. 2001. Transition Zone Studies of New-to-old Concrete with Different Binders. Cement and Concrete Composites. 23(4–5): 381-7.
Ohdaira E, Masuzawa N. Presuming the strength of concrete cold joint by ultrasound. 2001 IEEE Ultrasonics Symposium Proceedings An International Symposium (Cat No 01CH37263). IEEE. 755-60.
Gerges, N. N., Issa, C. A., Fawaz, S. 2015. Effect of Construction Joints on the Splitting Tensile Strength of Concrete. Case Studies in Construction Materials. 3: 83-91.
Al-Mamoori, F. H. N., Al-Mamoori, A. H. N. 2018. Reduce the Influence of Horizontal and Vertical Cold Joints on the Behavior of High Strength Concrete Beam Casting in Hot Weather by Using Sugar Molasses. Int J Eng Technol. 7: 79.
Issa, C. A., Gerges, N, N., Fawaz, S. 2014. The Effect of Concrete Vertical Construction Joints on the Modulus of Rupture. Case Studies in Construction Materials. 1: 25-32.
Abbas, A. N., Al-Naely, H. K., Abdulzahra, H. H., Al-Khafaji, Z. S. 2018. Structural Behavior of Reinforced Concrete Beams Having Construction Joint at Different Elevation. Int J Civ Eng Technol. 9: 712-20.
Mathew, A. A., Nazeer, M. 2017. Flexural Behavior of Reinforced Concrete Beams With Nano-Metakaolin. International Journal of Latest Trends in Engineering and Technology. 8(2): 231-240.
Al-Rifaie, A., Al-Hassani, H., Shubbar, A. A. 2021. Flexural Behaviour of Reinforced Concrete Beams with Horizontal Construction Joints. IOP Conference Series: Materials Science and Engineering. 1090(1): 012003.
Djazmati, B., Pincheira, J. A. 200. ;Shear Stiffness and Strength of Horizontal Construction Joints. Structural Journal. 101(4): 484-93.
Gerges, N. N., Issa, C. A., Fawaz, S. 2016. The Effect of Construction Joints on the Flexural Bending Capacity of Singly Reinforced Beams. Case Studies in Construction Materials. 5: 112-23. http://dx.doi.org/10.1016/j.cscm.2016.09.004.
Aziz, R. J. 2010. Shear Capacity of Concrete Prisms with Interface Joints. Journal of Engineering. 16(2): 5084-5097.
Bin Osman, M. H. Tami, H. B., and Abdul Rahman, N. A. 2016. Comparison of Construction Joint Ability on Concrete Slab Applied at Construction Site. Journal of Engineering and Applied Sciences. 11(4): 2576-2580.
Abdul-Majeed, Q. 2010. Evaluation of Transverse Construction Joints of Reinforced Concrete Beams. Engineering and Technology Journal. 28(14), 4750-73.
Abdul-Majeed, Q., Ghaleb, L. A., Ghaddar, M. G. 2010. Effect of the Number of Horizontal Construction Joints in Reinforced Concrete Beams. Engineering and Technology Journal. 28(19).
Rathi, V. R., Kolase, P. K. Rathi, V. R., & Kolase, P. K. 2013. Effect of Cold Joint on Strength of Concrete. International Journal of Innovative Research in Science, Engineering and Technology. 2(9): 4671-4679.
Abass, Z. W. 2012. Effect of Construction Joints on Performance of Reinforced Concrete Beams. Al-Khwarizmi Engineering Journal. 8(1): 48-64.
Ismael, M. A., Hameed, Y. M., Abd HJ. 2019. Effect of Construction Joint on Structural Performance of Reinforced Self-compacting Concrete Beams. International Journal of Civil Engineering and Technology (IJCIET). 10 (1): 297-306.
Jang, H. O., Lee, H. S., Cho, K., Kim, J. 2017. Experimental Study on Shear Performance of Plain Construction Joints Integrated with Ultra-high Performance Concrete (UHPC). Construction and Building Materials. 152: 16-23.
American Concrete Institute. 2014. Building Code Requirements for Structural Concrete (ACI 318-14). American Concrete Institute. 1-524.
Kwan, A. K. H., Ho, J. C. M., Pam, H. J. 2002. Flexural Strength and Ductility of Reinforced Concrete Beams. Proceedings of the Institution of Civil Engineers-Structures and Buildings. 152(4): 361-9.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
