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000889
Dipl.-Ing. (FH) Alexander Meierhofer
2021-04-30

Minimum Reinforcement Reduction for Slow-Curing Concrete

In the case of using slow‑curing concrete (usually for thick components), you can reduce the calculated minimum reinforcement by a factor of 0.85 to apply the load due to restraint, according to EN 1992‑1‑1, Section 7.3.2. However, a precondition for reduction is that the characteristic value of the strength development r = fcm2 / fcm28 does not exceed 0.3. Other key requirements for the application of this reinforcement reduction are specified explicitly in the final planning documents.

Minimum Reinforcement Reduction of Slow-Curing Concrete
Minimum Reinforcement Reduction of Slow-Curing Concrete

However, the reduction of the minimum reinforcement is regulated only in the national application documents for Germany and Austria. For other countries using Eurocode 2 for reinforced concrete design, this reinforcement reduction is not provided. Therefore, it is possible to apply the minimum reinforcement reduction in RF‑CONCRETE or CONCRETE only if you select one of the National Annexes for DIN EN 1992‑1‑1/NA: 2013‑04 (Germany) and ÖNORM B 1992‑1‑1:2011‑12 (Austria).

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KB 000889 | Minimum Reinforcement Reduction of Slow-Curing Concrete
Author

Mr. Meierhofer is the development leader of programs for concrete structures and is available for the customer support team in case of questions related to reinforced and prestressed concrete design.

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