Library of event criteria and resources recommendations for cold and hot weather concreting


January 4, 2021

CAMBRIDGE, MA — WeatherBuild®Decision Support Solutions for the Construction Industry and Built Environment®, is proud to announce the release of a library of weather event criteria and prescriptive resources recommendations for cold and hot weather concreting. WeatherBuild’s weather rules for Division 03 00 00 Concrete comply with both the American Concrete Institute ( ACI 306R-16 Guide to Cold Weather Concreting* and ACI 305R-10 Guide to Hot Weather Concreting.*

According to ACI 306R-16 Guide to Cold Weather Concreting, “the five objectives of cold weather concreting practices are to:

  1. Prevent damage to concrete due to early-age freezing.
  2. Ensure that the concrete develops the required strength for safe removal of forms, shores, and reshores, and for safe loading of the structure during and after construction.
  3. Maintain curing conditions that promote strength development without exceeding the recommended concrete temperatures.
  4. Limit rapid temperature changes, particularly before the concrete has developed sufficient strength to withstand induced thermal stresses.
  5. Provide protection consistent with the durability of the structure during its design life.”*

Further, WeatherBuild’s product templates feature construction materials for LafargeHolcim WeatherMix® H1 through H5 and for LafargeHolcim WeatherMix® C1 through C6. Other building product manufacturers (BPMs) in WeatherBuild’s library include CEMEX and HeidelbergCement, for example. Contractors can use the library out-of-the-box, and create new event criteria and resources recommendations based on contract requirements and site specifications.

Cold Weather Concreting Keywords: accelerating admixtures; antifreeze admixtures; cold weather concreting; concrete temperature; curing; enclosures; form removal; freezing and thawing; heaters; heating aggregates; insulating materials; maturity testing; protection; strength development.

Hot Weather Concreting Keywords: air entrainment; cooling; curing; evaporation; high temperature; hot weather construction; plastic shrinkage; production methods; retempering; slump tests; water content.

*Copyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved.

About WeatherBuild®

Headquartered in Cambridge, MA between Harvard and MIT, WeatherBuild® offers a suite of decision support solutions that empower contractors, owners, and operators to improve situational awareness and make better-informed decisions about weather events, schedule impacts, safety risks, and probable outcomes.

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