Microstructural, Mechanical and Physical Assessment of Portland Cement Concrete Pavement Modified by Sodium Acetate under Various Curing Conditions

Abstract

Portland Cement Concrete (PCC) pavement was studied with incorporation of an environmentally friendly eco-additive, sodium acetate (C2H3NaO2). This additive was added to PCC pavement in three different percentages of 2%, 4% and 6% of binder weight. For a comprehensive elucidation of the eco-additive incorporation on the performance of PCC pavement, casted samples were cured in three different environments, namely: water, outdoors and pond water. Water absorption tests, flexural and compressive strength tests after 7 and 28 days of curing were conducted and results compared with the control samples without any addition of sodium acetate. Results demonstrated a significant improvement in the impermeability, compressive strength and flexural strength of PCC pavement when sodium acetate concrete is cured in a water bath and outdoors. However, no/little improvement in the impermeability, compressive strength and flexural strength was observed in sodium acetate samples that were cured in pond water. Microstructural analysis of treated samples by using scanning electron microscopy (SEM) illustrated the strengthening effect that sodium acetate provides to the pore structure of concrete pavement.

Publication DOI: https://doi.org/10.3390/infrastructures6080113
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Engineering Systems & Management
Additional Information: Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Uncontrolled Keywords: sodium acetate,eco-friendly additives,concrete pavement,C2H3NaO2,sustainable construction,morphology
Full Text Link:
Related URLs: https://www.mdp ... 12-3811/6/8/113 (Publisher URL)
PURE Output Type: Article
Published Date: 2021-08-12
Accepted Date: 2021-08-11
Authors: Al-Kheetan, Mazen J.
Ghaffar, Seyed Hamidreza
Awad, Said
Chougan, Mehdi
Byzyka, Juliana
Rahman, Mujib M. (ORCID Profile 0000-0002-5177-4159)

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