Modeling thermal-shrinkage stresses in early age massive concrete structures – Comparative study of basic models

Klemczak, Barbara

doi:10.1016/j.acme.2014.01.002

Cited by 28 publications

(12 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improved methods take into account inelastic properties of the materials, especially the effect of stiffness degradation caused by cracking of concrete. This more advanced calculations, example of which can be found in [17], [18], [19], [20], [21] are not the subject of this paper.…”

Section: Second Level Of Accuracymentioning

confidence: 99%

Minimum Reinforcement for Crack Width Control in RC Tensile Elements

Knauff

Grzeszykowski

Golubińska

2019

Archives of Civil Engineering

View full text Add to dashboard Cite

New approach using direct crack width calculations of the minimum reinforcement in tensile RC elements is presented. Verification involves checking whether the provided reinforcement ensures that the crack width that may result from the thermal-shrinkage effects does not exceed the limit value. The Eurocode provisions were enriched with addendums derived from the German national annex. Three levels of accuracy of the analysis were defined - the higher the level applied, the more significant reduction in the amount of reinforcement required can be achieved. A methodology of determining the minimum reinforcement for crack width control on the example of a RC retaining wall is presented. In the analysis the influence of residual and restraint stresses caused by hydration heat release and shrinkage was considered.

show abstract

Section: Second Level Of Accuracymentioning

confidence: 99%

Minimum Reinforcement for Crack Width Control in RC Tensile Elements

Knauff

Grzeszykowski

Golubińska

2019

Archives of Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Minimising stresses Currently, the use of a variety of modern computer programs and methods, usually based on the finite element method (FEM) is applied in the design and research on the concrete structures [e.g., 9]. Today's software tools for FEM analysis [10,11] make it possible to assess the likelihood of the occurrence of cracks in a concrete structure before its operation, similarly to the effects of failure observed in other structural materials [e.g., 12,13]. If cracks are assumed to appear, the general approach is to control only their width.…”

Section: Conventional Methods To Limit the Influence Of Forced Deformmentioning

confidence: 99%

A Case Study of Pre-Service Cracks in the Concrete Decks of a Two-Level Basement Car Park

Kossakowski

Ślusarczyk

2017

Archives of Civil Engineering

View full text Add to dashboard Cite

This paper deals with the prevention of failure of structural elements made of reinforced concrete. It discusses preservice cracks in the concrete decks of an underground parking facility. The cracks were assessed by analyzing their morphology. The results were used to determine the crack causes and the mechanisms of their initiation and growth.Some design solutions to prevent or reduce the occurrence of pre-service cracks are also presented.

show abstract

“…They claimed that the ambient temperature has an important influence on temperature stress. The models of massive block concrete and massive reinforced concrete wall models were analyzed [7]. Temperature gradients and basic constraints were found to be the main cause of temperature stress.…”

Section: Introductionmentioning

confidence: 99%

Temperature-stress coupling mechanism analysis of one-time pouring mass concrete

Yang

Peng

et al. 2019

THERM SCI

View full text Add to dashboard Cite

Original scientific paper https://doi.org/10.2298/TSCI180825231YThermal damage control of mass concrete is the key to guarantee the quality of mass projects. Based on several engineering experiences and finite element software ANSYS, the temperature field and stress field of the typical dam section of the Tengzigou hydropower station in Sichuan province were simulated. Considering the actual materials used, cooling measures, etc., maximum tensile stress and compressive stress at different time points derived from the temperature stress field during the time of concrete maintenance were calculated, and the numerical results showed that strength increment under the given conditions was much less than the actual condition. After the concrete of the dam body of the hydro power station were poured, there was no significant temperature stress crack appeared through a long-term observation, and the project condition was in tune with the calculated expectation. The above research results are valuable to further prediction of concrete temperature in different periods, the pre-study of the effect of temperature control measures, and these could offer guidance of the adjustment of temperature control measures in the case of abnormal conditions.

show abstract

Modeling thermal-shrinkage stresses in early age massive concrete structures – Comparative study of basic models

Cited by 28 publications

References 9 publications

Minimum Reinforcement for Crack Width Control in RC Tensile Elements

Minimum Reinforcement for Crack Width Control in RC Tensile Elements

A Case Study of Pre-Service Cracks in the Concrete Decks of a Two-Level Basement Car Park

Temperature-stress coupling mechanism analysis of one-time pouring mass concrete

Contact Info

Product

Resources

About