Evaluation of modulus of elasticity for eco-friendly concrete made with seawater and marine sand

  • Tu T. Nguyen Faculty of Civil Engineering, Hanoi Architectural University, Km 10 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
  • Pham Thanh Tung Faculty of Building and Industrial Construction, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Kobir Hossain Civil Engineering at Dhaka University of Engineering & Technology, Gazipur, Bangladesh
Keywords: modulus of elasticity, geopolymer concrete, seawater, marine sand, Portland cement

Abstract

The ultimate aim of this study is to use experimental work for evaluating the modulus of elasticity (MOE) of Geopolymer concrete (GPC) using marine sand as fine aggregate and seawater for the mix. Four different groups of concrete mixtures, namely CP1a, CP1b, CP2a, CP2b were identified. While the CP1a mix was prepared using GPC with marine sand and seawater, the CP1b was made by adding sodium sulfate (Na2SO4) into the CP1a mix. The same procedure was applied for CP2a and CP2b mixtures; however, instead of using GPC, Portland Cement was used as the binder for the CP2 group (OPC). A total of 12 test samples were cast and tested to determine the development of MOE of GPC and OPC over time. The MOE of concrete was measured at 3, 7, 28, 60, and 120 days. Experimental results were then compared to the MOE obtained using the empirical equation from ACI 318 - 2008. It was found that the experimental MOE of both OPC and GPC specimens was higher than the estimated MOE values from ACI standards. The added sodium sulfate yielded a significant effect on the MOE of OPC but produced a minimal influence on the MOE of GPC.

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Author Biographies

Tu T. Nguyen, Faculty of Civil Engineering, Hanoi Architectural University, Km 10 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam

Faculty of Civil Engineering, Hanoi Architectural University, Hanoi, Vietnam

Kobir Hossain, Civil Engineering at Dhaka University of Engineering & Technology, Gazipur, Bangladesh

Faculty of Civil Engineering

Published
31-10-2021
How to Cite
Nguyen, T. T., Tung, P. T., & Hossain, K. (2021). Evaluation of modulus of elasticity for eco-friendly concrete made with seawater and marine sand. Journal of Science and Technology in Civil Engineering (STCE) - HUCE, 15(4), 148-156. https://doi.org/10.31814/stce.huce(nuce)2021-15(4)-13
Section
Research Papers