Performance Evaluation of Precast Concrete Using Microwave Heating Form.

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ID: 84481
2019
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Ranked #609 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
The purpose of this study is to evaluate the temperature distribution, strength development, porosity, scanning electron microscopy observation, shrinkage, and surface properties of concrete in order to apply microwave heat curing to the precast method and to analyze the CO₂ emissions and economic feasibility of microwave heat curing. The heating of a steel form by microwave heating enabled concrete to be efficiently cured at a temperature within a range of ±5 °C. After the curing, demolding strength could be cleared through the densification of the concrete by decreasing the porosity of the concrete. Microwave heat curing exhibited excellent performance compared to conventional steam curing in terms of efficient temperature control, occurrence of cracks due to shrinkage, surface condition of concrete after curing, economic efficiency, and CO₂ emissions. However, verification and supplementation based on actual data are necessary so that environments applicable to the various sizes and shapes of forms can be prepared.
Reference Key
choi2019performancematerials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Choi, Hyeonggil;Koh, Taehoon;Choi, Heesup;Hama, Yukio;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E1113
URL
https://www.mdpi.com/1996-1944/12/7/1113
Keywords
demolding strength microwave heating system precast concrete site precast steam curing

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