Finite element analysis of concrete cracking at early age

Aurich, Mauren; Filho, Américo Campos; Bittencourt, Túlio Nogueira; Shah, Surendra P.

doi:10.12989/sem.2011.37.5.459

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…The Fourier equation governing the heat generation and temperature distribution for two dimensional elements with isotropic solid environment is expressed by (Aurich et al, 2009;Wang and Tian, 2005) Equation 1:…”

Section: Mathematical Model For Temperature Predictionmentioning

confidence: 99%

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Numerical Prediction Model for Temperature Distributions in Concrete at Early Ages

Ali¹

2012

American Journal of Engineering and Applied Sciences

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A finite element-finite difference numerical model is developed for predicting non-uniform temperature development in hydrating concrete with respect to time and space. The results obtained from this model can be used by structural and construction engineers to predict critical thermal stresses induced due to differential temperatures between the core and the surface of the concrete at early ages and between the zero-stress temperatures and the minimum equilibrating ambient temperatures that the concrete experiences during its service life. The prediction of zero-stress temperatures also enables to quantify the extent of builtin curl developed in concrete structures. The finite element is used to space discretization while the finite difference is used to obtain transient solutions of the model. The numerical formulations are then programmed in Matlab. The numerical results were compared with experimental results found in literature and demonstrated very good agreement.

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Section: Mathematical Model For Temperature Predictionmentioning

confidence: 99%

“…The cumulative heat generated per volume due to hydration up to time t is given by (Aurich et al, 2009):…”

Section: Mathematical Model For Temperature Predictionmentioning

confidence: 99%

Numerical Prediction Model for Temperature Distributions in Concrete at Early Ages

Ali¹

2012

American Journal of Engineering and Applied Sciences

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“…Such computations are challenging due to various factors that influence the temperature regime [16][17][18]. Numerical methods, such as the finite-element method (FEM), have been used to solve these complex, nonstationary problems [19][20][21][22][23], as offered by software systems like "Midas Civil". These software systems enable the consideration of a large array of operational factors [24].…”

Section: Introductionmentioning

confidence: 99%

Predictive Model of Temperature Regimes of a Concrete Gravity Dam during Construction: Reducing Cracking Risks

Aniskin,

Nguyen

2023

Buildings

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In consideration of the mild climatic conditions of North Vietnam with average monthly air temperatures ranging from 15 °C in winter to 26.5 °C, this study analyzes the regulation of the temperature regime and thermally stressed state of a concrete gravity dam made of rolled concrete. Despite the favorable weather conditions, there remains a risk of thermal cracking, necessitating the presentation of crack-formation models from different countries to assess and mitigate the risk of cracking through the adjustment of construction conditions. The study has developed a predictive model for the temperature regime and thermally stressed state of a layer-by-layer concrete mass under the given construction conditions using the factor-analysis method. Regression equations were then derived from the factorial experiment to quantify the responses of the maximum temperature and maximum stress in the concrete mass. The numerical finite-element method using the Midas Civil software package was employed to calculate the temperature regime and thermally stressed state of the concrete mass. To validate the mathematical predictive model, it was tested on the Ban Lai gravity dam in North Vietnam. The dam, which was constructed from rolled concrete and stands 56 m tall, was selected as the object in this practical example. The results obtained from applying the predictive model were compared to the results obtained from numerical calculations of the dam under construction, as well as the findings from field observations. These results were found to be in good agreement, indicating the effectiveness of the predictive model. Furthermore, an evaluation of the potential for temperature cracking of the concrete during the construction period was conducted.

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Nonlinear finite element analysis of torsional R/C hybrid deep T-beam with opening

Lisantono¹

2013

Computers and Concrete

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Finite element analysis of concrete cracking at early age

Cited by 3 publications

References 5 publications

Numerical Prediction Model for Temperature Distributions in Concrete at Early Ages

Numerical Prediction Model for Temperature Distributions in Concrete at Early Ages

Predictive Model of Temperature Regimes of a Concrete Gravity Dam during Construction: Reducing Cracking Risks

Nonlinear finite element analysis of torsional R/C hybrid deep T-beam with opening

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