Mass Concrete and Thermal Control Plans: Managing Heat of Hydration

Your specification is asking for a thermal control plan to manage concrete temperature. We can help! We have completed more than 800 thermal models for mass concrete in bridges, buildings, dams, and industrial structures. This includes thermal models for the St. Croix Crossing Bridge in Stillwater, Minnesota and the I-91 Bridge in Brattleboro, Vermont.

Mass concrete and thermal control plans

Cable anchorages in St. Croix Crossing bridge
Photo credit: Len Kirk, Hayden-Murphy Equipment Company; St. Croix Crossing Bridge

Thermal control plans tell you the:

  • required temperature of the concrete entering the formwork
  • requirement of insulation or heated enclosure to maintain the differential temperature between the center and face, and
  • approximate length of temperature monitoring required before the member meets the thermal control specification.

We can install the thermocouples in your concrete so you know they’re in the right places. Beton’s monitoring systems provide real-time data. Or if you prefer, we can monitor daily temperature data from the in-place concrete. If we calibrate the maturity of the concrete ahead of time, we can also provide real-time data on the strength development of the concrete. That way you can know when it’s safe to remove the forms or post-tension the concrete. We can also assist in planning for when the maximum internal or differential temperatures approach their specified limits.

Beton’s philosophy is that cooling tubes should be used only when absolutely necessary. We’d rather help you manage concrete heat output through low heat of hydration concrete mixture design, lowering incoming concrete temperature, and managing insulation and heated enclosures.