This technology is a concrete thermal curing system that uses multiple thermal insulation tubes, each containing a space for hot water, laid out across a poured concrete surface without overlapping. The tubes are connected by hot water pipes, allowing the water to circulate and heat the concrete.
In winter or sub-zero temperatures, water within concrete can freeze, halting hydration and preventing proper hardening, which leads to structural defects. Traditional methods like using coal briquette heaters or hot air blowers suffer from significant heat loss, making it difficult to maintain a consistent temperature. Alternatively, embedding heating wires in rebar or formwork carries high risks of circuit breaks, construction delays, and electrical accidents.
This technology features thermal insulation tubes made of waterproof upper and lower sheets, with a low-friction resin layer and a grid-patterned heat-sealing layer inside the upper sheet. When cut to fit the pouring area, the edges are secured using a cylindrical clamp body with a receiving hole and a locking pin to prevent leaks. A one-way plate valve in the piping prevents backflow, while a circulation line equipped with a pump and heater reheats and recirculates the water. Suitable for large-scale concrete surfaces like apartment slabs, bridge decks in cold regions, road paving, and factory floors, this system allows for custom cutting to fit site dimensions, ensuring uniform heating without the risks of smoke or electrical shorts.
This invention was developed with support from the Ministry of Science and ICT for the development of ultra-high-strength, ultra-high-toughness cement composites and micromechanics-based analysis technology considering strain rate effects.
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