Ensure that concrete placed during cold weather achieves the required strength
The ACI – American Concrete Institute webinar “Creating Durable Concrete in Cold Weather” by John Gnaedinger and Tim West discusses methods to ensure that concrete placed during cold weather achieves the required strength within a short timeframe. Further, Gnaedinger and West review approaches to minimize the extra costs associated with cold-weather concreting with simple and inexpensive tools.
Protect the work results from damage and meet or exceed the durability requirements
On balance, the American Concrete Institute Cold Weather Committee focuses on creating guidelines to help contractors put concrete in place in cold-weather months and during low-temperature events. The objectives of cold weather concreting are two-fold: 1. Protect the work results from damage due to freezing; and, 2. Meet or exceed the durability requirements for the intended service conditions.
Heated aggregates, embedded temperature and maturity sensors, protection measures
During the webinar “Creating Durable Concrete in Cold Weather,” the authors cite real-world examples on a wide range of technical topics such as heated aggregates, embedded temperature and maturity sensors, protection measures, and air-entrainment — all with a focus on durability. The authors also review the benefits and risks associated with placing non-air-entrained concrete during cold weather.
- Define cold weather concreting.
- Explain the importance of creating durable concrete in cold weather.
- Summarize tools to achieve strength and durability targets in cold weather.
- Discuss research and experiences regarding air-entrained and non-air-entrained concrete.
Categories: Cold Weather, Concrete Technology, Construction Practices, Curing, Durability
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