Risse in Fundamenten von Onshore‐Windenergieanlagen

Akkermann, Jan; Weiler, Simon

doi:10.1002/best.201600057

Cited by 1 publication

(2 citation statements)

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“…Hence choosing a cement with low heat generation or the use of additions with latent hydraulic activity (type II according to [2]) are possibilities to reduce the hydration energy [13][14][15]. A cement with low hydration energy (CEM III/B) is chosen for the core concrete.…”

Section: Requirements For Low Hydration Energy Core Concretementioning

confidence: 99%

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FE-Study on the Effect of Gradient Concrete on Early Constraint and Crack Risk

Strieder

Hilber²,

Stierschneider

et al. 2018

Applied Sciences

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Abstract:In long-lasting mass concrete structures the desired material properties of the concrete mix to realize a durable concrete and a concrete surface without cracks conflict with each other. The requirement of concrete with high durability leads to high thermal energy release and therefore, as another consequence, to high crack risk. Crack reduction is achieved by use of concrete with low hydration energy, which on the other hand leads to a decrease in concrete durability. Besides from optimized base materials and concrete technology, a gradient material distribution in the cross-section could reduce the problem since durable concrete is needed near the surface and the requirement of low-hydration energy is located in the center of the member. A simplified model is used to investigate the possible effect of a gradient concrete material distribution in mass concrete structures on crack reduction. The results of the analysis show that gradient concrete might contribute to lowering the constraint stresses and therefore the crack risk during concrete hardening.

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Section: Requirements For Low Hydration Energy Core Concretementioning

confidence: 99%

“…Only the zone near the surface requires a high durable concrete, which leads to high cement content and low w/c ratios. In mass concrete structures thermal stresses during hydration are a known problem [7][8][9][10][11][12][13][14][15][16]. These thermal stresses can lead to cracks in the concrete.…”

Section: Introductionmentioning

confidence: 99%