Performance of Cement Mortar Mixtures Containing Fine Aggregate and Admixtures

Abstract:

The purpose of this study is to investigate the influence of the cement/sand (c/s) ratio on the behavior of cement mortar. The used c/s ratios in this study were 1:0, 1:0.45, and 1:0.83. The findings of this study showed that increasing the sand content reduces the compressive strength of the mortar mixture by 41.5 and 28.2% for the c/s ratios of 1:0.45, and 1:0.83, compared to the plain cement mortar (c/s: 1:0). The increase in sand content requires more water content to increase the workability and strength of the mixtures. However, the flexural strength slightly increased compared to the control mortar. In addition, to enhance sustainability, the cement was replaced with two waste industrial materials namely, micro silica (MS) and fume treatment plant (FTP) dust by 20% of cement weight. The modified mixtures (c/s: 1:0) also showed reduced strength at the testing age. The compressive strength of the modified mixtures was reduced by 50% and 19% for the FTP and MS-modified mixtures, respectively. On the other hand, the flexural strength was reduced by 19.1 and 30.2% for the FTP and MS-modified mixtures. This reduction can help achieve certain strength requirements by lowering the cement content in cement concrete mixtures.

• Periodical: Materials Science Forum (Volume 1142)
• Pages: 85-96
• DOI: https://doi.org/10.4028/p-N1m8xa
• Online since: December 2024
• Authors: Monaf A. Alarab*, Sara A. Alattieh, Waleed Zeiada, Ghazi G. Al-Khateeb, Salah Al-Toubat, Fatma Abdulla
• Keywords: Cement Mortar, Cement Replacement, Cement/Sand Ratio, Compressive Strength, Flexural Strength

References

[1] J. Bu, Z. Tian, S. Zheng, and Z. Tang, "Effect of sand content on strength and pore structure of cement mortar," J. Wuhan Univ. Technol. Mater. Sci. Ed., vol. 32, no. 2, p.382–390, 2017.

DOI: 10.1007/s11595-017-1607-9

[2] K. Khan et al., "Effective use of micro-silica extracted from rice husk ash for the production of high-performance and sustainable cement mortar," Constr. Build. Mater., vol. 258, Oct. 2020.

DOI: 10.1016/j.conbuildmat.2020.119589

[3] R. Garg, R. Garg, M. Bansal, and Y. Aggarwal, "Experimental study on strength and microstructure of mortar in presence of micro and nano-silica," in Materials Today: Proceedings, Elsevier Ltd, 2020, p.769–777.

DOI: 10.1016/j.matpr.2020.06.167

[4] H. Y. Wang, W. Ten Kuo, C. C. Lin, and C. Po-Yo, "Study of the material properties of fly ash added to oyster cement mortar," Construction and Building Materials, vol. 41. p.532–537, 2013.

DOI: 10.1016/j.conbuildmat.2012.11.021

[5] L. G. Li, Z. H. Huang, J. Zhu, A. K. H. Kwan, and H. Y. Chen, "Synergistic effects of micro-silica and nano-silica on strength and microstructure of mortar," Constr. Build. Mater., vol. 140, p.229–238, Jun. 2017.

DOI: 10.1016/j.conbuildmat.2017.02.115

[6] J. M. Gao, C. X. Qian, B. Wang, and K. Morino, "Experimental study on properties of polymer-modified cement mortars with silica fume," Cem. Concr. Res., vol. 32, no. 1, p.41–45, Jan. 2002.

DOI: 10.1016/S0008-8846(01)00626-3

[7] L. Mollo, "Influence of cement/sand ratio on behavior of cement mortar," J. Eng. Des. Technol., vol. 13, no. 1, p.23–36, 2015.

DOI: 10.1108/JEDT-07-2012-0031

[8] E. S. S. Abu Seif, "Performance of cement mortar made with fine aggregates of dune sand, Kharga Oasis, Western Desert, Egypt: An experimental study," Jordan J. Civ. Eng., vol. 7, no. 3, p.270–284, 2013.

[9] S. Singh, P. Munjal, and N. Thammishetti, "Role of water cement ratio on the cement mortar," J. Build. Eng., vol. 4, no. September, p.94–100, 2015.

DOI: 10.1016/j.jobe.2015.09.003

[10] P. Shen, J. X. Lu, H. Zheng, S. Liu, and C. Sun Poon, "Conceptual design and performance evaluation of high strength pervious concrete," Constr. Build. Mater., vol. 269, p.121342, 2021.

DOI: 10.1016/j.conbuildmat.2020.121342

[11] K. J. Shin, S. C. Lee, and Y. Y. Kim, "Role of fine aggregates on mechanical properties of mortar," Mater. Res. Innov., vol. 19, no. March, p.690–692, 2015.

DOI: 10.1179/1432891715Z.0000000001778

[12] E. Lee, J. Ko, J. Yoo, S. Park, and J. Nam, "Analysis of the aggregate effect on the compressive strength of concrete using dune sand," Appl. Sci., vol. 11, no. 4, p.1–16, 2021.

DOI: 10.3390/app11041952

[13] H. Singh and S. Bansal, "EFFECT OF SILICA FUME ON THE STRENGTH OF CEMENT MORTAR," IJRET Int. J. Res. Eng. Technol., vol. 4, no. 2, 2015.

[14] L. Senff, D. Hotza, W. L. Repette, V. M. Ferreira, and J. A. Labrincha, "Effect of nanosilica and microsilica on microstructure and hardened properties of cement pastes and mortars," Adv. Appl. Ceram., vol. 109, no. 2, p.104–110, Feb. 2010.

DOI: 10.1179/174367509X12502621261659

[15] K. Khan et al., "Effective use of micro-silica extracted from rice husk ash for the production of high-performance and sustainable cement mortar," Constr. Build. Mater., vol. 258, p.119589, Oct. 2020.

DOI: 10.1016/J.CONBUILDMAT.2020.119589

[16] K. Al-Jabri and H. Shoukry, "Use of nano-structured waste materials for improving mechanical, physical and structural properties of cement mortar," Constr. Build. Mater., vol. 73, p.636–644, Dec. 2014.

DOI: 10.1016/J.CONBUILDMAT.2014.10.004

[17] M. Berra, F. Carassiti, T. Mangialardi, A. E. Paolini, and M. Sebastiani, "Effects of nanosilica addition on workability and compressive strength of Portland cement pastes," Constr. Build. Mater., vol. 35, p.666–675, Oct. 2012.

DOI: 10.1016/J.CONBUILDMAT.2012.04.132

[18] U. J. Alengaram, Valorization of industrial byproducts and wastes as sustainable construction materials. Elsevier Ltd, 2021.

DOI: 10.1016/B978-0-12-821730-6.00003-6

[19] ASTM Standards, "Standard Specification for Portland Cement," 2021.

DOI: 10.1520/C0150

[20] ASTM Standards, "Standard Specification for Slag Cement for Use in Concrete and Mortars," 2018.

DOI: 10.1520/C0989

[21] ASTM Standards, "Standard Specification for Silica Fume Used in Cementitious Mixtures," ASTM C1240 - 20, p.1–7, 2020.

[22] "Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube Specimens) 1".

DOI: 10.1520/C0109_C0109M-21

[23] "Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars 1".

DOI: 10.1520/C0348-21