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The Long-term Durability Evaluation of PC Box for Near-surface Transit System manufactured by Microwave Heat curing
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 Title & Authors
The Long-term Durability Evaluation of PC Box for Near-surface Transit System manufactured by Microwave Heat curing
Koh, Tae-Hoon; Yoo, Han-Ju;
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 Abstract
This study examined the long-term durability of PC boxes, which was manufactured by low-carbon eco-friendly concrete using an alternative binder to cement and alternative fine aggregate to sand and microwave heat curing system to reduce the construction cost of a near-surface transit system. Based on the test results, the initial compressive strength of microwave heat cured concrete was higher than that of the steam cured concrete, but those were similar in the long-term age. In addition, there was no significant difference between the two curing conditions in the chemical resistance and the freeze-thawing resistance, and the chloride ion penetration level of the concrete cured by two methods was very low. Therefore, low-carbon eco-friendly concrete and microwave heat curing technology are expected to contribute to the economic construction of a near-surface transit system, and reduce carbon dioxide emissions and environmental impact.
 Keywords
Durability;Microwave;Microwave heat curing;Near-surface Transit System;PC box;
 Language
Korean
 Cited by
 References
1.
Tae-Hoon Koh, Do-Young Moon, Jung-Myung Bae, Jung-Hoon Yoo, "Compressive Strength Development Model for Concrete Cured by Microwave Heating Form," Journal of the Korea Concrete Institute, 27(6), pp. 669-676, 2015. DOI: http://dx.doi.org/10.4334/JKCI.2015.27.6.669 crossref(new window)

2.
Tae-Hoon Koh, Min-Kook Ha, Ho-Jin Jung, "A Performance Evaluation of Concrete for Low-carbon Eco-friendly PC Box for Near-surface Transit System," Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 5, pp. 3587-3595, 2015. DOI: http://dx.doi.org/10.5762/KAIS.2015.16.5.3587 crossref(new window)

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KS F 2456, Standard test method for resistance of concrete to rapid freezing and thawing, KSA, 2013.

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KS F 2711, Testing method for electrical indication of concrete's ability to resist chloride ion penetration, KSA, 2002.