RAPID CONCRETE CURING TECHNIQUE CONSIDERING BOTH MICRO-WAVE IRRADIATION AND INTERNAL HEATING ADMIXTURE IN EXTREME COLD WEATHER ENVIRONMENT

摘要

The present invention relates to a rapid curing method of admixture concrete with an internal heating composition under an extremely cold environment using a microwave which comprises the heating composition in a concrete matrix and radiates a microwave inside the concrete matrix to heat the heating composition to quicken the curing speed of existing concrete even under the extremely cold environment. The heating composition of a preferable embodiment of the present invention comprises 5-15 wt% of cobalt oxide, 2-5 wt% of silicon carbide, 5-10 wt% of manganese oxide, 5-10 wt% of iron oxide, 5-10 wt% of thiosulfate hydrate, and 40-60 wt% of water based on the total weight of the heating composition, and radiates the microwave in a range of 2.4 GHz to the concrete matrix.