Development of a Novel Concrete Curing Method Using Induction Heating System
Source abstract
Abstract
This study aimed to develop an accelerated concrete curing method based on induction heating (IH) technology. The proposed curing method provides improved heating efficiency and safety since it directly heats only the metallic forms in a non-contacting manner. It also has the advantage of being capable of heating the concrete according to a desirable heating scenario. The effects of several parameters on its performance were evaluated using a finite element method (FEM)-based thermal analysis and heating performance tests. The FEM analysis revealed the steel form to be appropriate for the IH system. The analysis also revealed that equally spaced three-turn coils yielded increased temperature uniformity in the steel form, which was verified by results of the steel form heating experiments. Furthermore, the minimum temperature generated in the form was sufficient for concrete curing. The efficiency of the use of IH for concrete curing and the effects of curing parameters were further investigated through compression tests after applications of various curing methods and by examining the temperature distributions during curing. The test results revealed early strength development even under water freezing conditions. This demonstrated the effectiveness of IH for concrete curing in cold weather. However, the efficiency decreased when the cross-sectional dimension of the specimen increased. The test results also verified that the maximum temperature and duration of induction heat curing affect the early age strength of concrete.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Concrete Properties and Behavior · Materials Engineering and Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education, Cheonan-si, Chungcheongnam-do 31253, Korea
Department of Agricultural and Rural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
Funding
Ministry of Land, Infrastructure and Transport of Korean government & Chungnam National University
References (23)
Show source-provided references
1. Mehta, P.K., and Monteiro, P.J. (2006). Concrete: Microstructure, Properties and Materials, McGraw-Hill. [3th ed.].
2. (1988). ACI Committee 306 (306R-88). Report on Cold Weather Concreting, American Concrete Institute.
3. Applications of microwave energy in cement and concrete—A review10.1016/j.rser.2014.05.054 ↗
4. Neville, A.M. (1996). Properties of Concrete, J. Wiley. [4th ed.].
5. Preliminary study for strength and freeze-thaw durability of microwave-and steam-cured concrete10.1061/(ASCE)0899-1561(2007)19:11(972) ↗
6. Determination of optimal process for microwave curing of concrete10.1016/S0008-8846(97)00015-X ↗
7. Makul, N. (2019). Production of high-early-compressive-strength Portland cement paste using low-pressure microwave-accelerated heating and curing: processing characteristics and factors affected. Heliyon, 5.10.1016/j.heliyon.2019.e02098 ↗
8. Influence of microwave-accelerated curing procedures on the microstructure and strength characteristics of Type I-Portland cement pastes
9. Microwave curing effects on the 28-day strength of cementitious materials10.1016/S0008-8846(98)00189-6 ↗
10. Response of alkali activated fly ash mortars to microwave curing10.1016/j.cemconres.2010.08.010 ↗
11. Choi, H., Koh, T., Choi, H., and Hama, Y. (2019). Performance evaluation of precast concrete using microwave heating form. Materials, 12.10.3390/ma12071113 ↗
12. Application of low-carbon ecofriendly microwave heat curing technology to concrete structures using general and multicomponent blended binder10.1061/(ASCE)MT.1943-5533.0002472 ↗
13. Compressive strength of heat-cured concrete based on induction heating10.9798/KOSHAM.2019.19.7.331 ↗
14. Analysis of temperature distribution of mold for curing concrete based on induction heating
15. (2020, December 07). Altair HyperWorks Flux 2019.1 User’s Guide. Available online: https://www.altair.com/flux/.
16. Stansel, N.R. (1949). Induction Heating, McGraw-Hill.
17. (2015). KCI PM 303.1:15. Concrete Curing, Korea Concrete Institute.
18. (2001). PCA R&D Serial No. 2166. Ettringite Formation and the Performance of Concrete, Portland Cement Association (PCA).
19. (2015). ASTM C 39M-15a. Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, ASTM International.
20. Effect of cylinder size on the modulus of elasticity and compressive strength of concrete from static and dynamic Tests10.1155/2015/580638 ↗
21. Talaat, A., Emad, A., Tarek, A., Masbouba, M., Essam, A., and Kohail, M. (2020). Factors affecting the results of concrete compression testing: A review. Ain Shams Eng., in press.10.1016/j.asej.2020.07.015 ↗
22. Vandegrift, D., and Schindler, A. (2006). The Effect of Test Cylinder Size on the Compressive Strength of Sulfur Capped Concrete Specimens, Highway Research Center and Department of Civil Engineering at Auburn University.
23. FitzGibbon, M.E. (2020, December 07). Large Pours for Reinforced Concrete Structures—2: Heat. Available online: https://trid.trb.org/view/45991.