Thermal Cracking Suppression Construction Method by Segmented Placing of Concrete: HTL Method
The “HTL Method” is a construction method that was conceived as a measure for suppressing thermal cracking of mass concrete. Temperature rise is reduced by arranging hollow pipes (spiral ducts) in the center of the heating-generating body of concrete, and delaying the time of heat generation by placing the concrete in the ducts and around the ducts separately. A further temperature reduction can also be achieved by cooling the interior of the ducts. The ducts can also be arranged freely at points where the user wishes to reduce the temperature. Moreover, because special equipment and materials are not required, the HTL Method also has excellent cost performance.
- Heat of hydration can be suppressed.
- Because the maximum temperature and the temperature difference between the surface and interior are reduced, thermal cracking is suppressed.
- Cooling effect can be improved further by cooling the interior of the ducts (supply of air or water, filling with water).
- Construction is easy because concrete can be filled in the ducts.
- Free selection of the combination of ducts diameter, spacing, and cooling method is possible, corresponding to the required performance.