Next Article in Journal
An Optimal Domestic Electric Vehicle Charging Strategy for Reducing Network Transmission Loss While Taking Seasonal Factors into Consideration
Next Article in Special Issue
FE-Study on the Effect of Gradient Concrete on Early Constraint and Crack Risk
Previous Article in Journal
Monitoring Damage Using Acoustic Emission Source Location and Computational Geometry in Reinforced Concrete Beams
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Appl. Sci. 2018, 8(2), 190; https://doi.org/10.3390/app8020190

Early Age Carbonation of Fiber-Cement Composites under Real Processing Conditions: A Parametric Investigation

1
Department of Chemical Engineering, Kasetsart University, Bangkok 10900, Thailand
2
Institute for Environment, Health, and Safety, Belgian Nuclear Research Centre (SCK•CEN), 2400 Mol, Belgium
3
Mahaphant Fibre-Cement Public Company Limited, Lopburi 15220, Thailand
*
Authors to whom correspondence should be addressed.
Received: 14 December 2017 / Revised: 21 January 2018 / Accepted: 24 January 2018 / Published: 26 January 2018
View Full-Text   |   Download PDF [5486 KB, uploaded 26 January 2018]   |  

Abstract

This paper presents the outcome of a comprehensive experimental program undertaken to study the performance of cellulose pulp and synthetic PVA (polyvinyl alcohol) based fiber-cement composite under both carbonated and non-carbonated curing conditions at early age. The composites were produced at different rolling pressures (2.5 to 9.0 bar) and subjected to various curing conditions in which the effects of CO2 pressure (1 to 3 bar) and curing time (3 to 9 h) were studied. The mechanical properties (modulus of elasticity (MOE), modulus of rupture (MOR), and toughness), as well as the physical properties (porosity, bulk density, and water absorption), were measured for all samples. Scanning electron microscopy (SEM) was used to investigate the effect of carbonation on porosity change and adhesion of fiber-matrix. A parametric investigation of the effects of the carbonation curing period, CO2 pressure, and rolling pressure on the improvement of the physical and mechanical properties during carbonation curing was performed. Results showed that fiber-cement composites cured with an elevated CO2 pressure of 3 bar, rolling pressure of 3 bar, and 5 h of curing time provided optimal curing conditions resulting in the most desirable mechanical and physical properties. However, toughness was greatly reduced with the increase of the CO2 pressure, curing time, and rolling pressure. Additionally, the carbonation curing improved the bonding between the fiber and the cement matrix because of the precipitation of calcite particularly in the pores of the interfacial transition zone (ITZ) between the cement matrix and the fibers. View Full-Text
Keywords: fiber-cement composite; mechanical properties; carbonation; parametric study fiber-cement composite; mechanical properties; carbonation; parametric study
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Kottititum, B.; Phung, Q.T.; Maes, N.; Prakaypan, W.; Srinophakun, T. Early Age Carbonation of Fiber-Cement Composites under Real Processing Conditions: A Parametric Investigation. Appl. Sci. 2018, 8, 190.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top