Experimental evaluation and modelling of early-age basic tensile creep in high-performance concrete

Dabarera, Arosha; Li, Liang; Dao, Vinh

doi:10.1617/s11527-021-01722-w

Cited by 20 publications

(10 citation statements)

References 40 publications

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“…In Table 8, the formats of strength‐dependent factor (

φ_{italicfc}

) and time development function (

φ_{t}

) are similar to the FIB 2010 model because of their simplicity and wide applicability. These formats were also adopted in tensile creep model proposed by Dabarera et al 21 Note that the time development function (

φ_{t}

) in FIB 2010 model considers the temperature effect. However, due to the absence of realistically measured activation energy values, the influence of temperature variation on tensile creep is not considered in the proposed model.…”

Section: Modeling Of Tensile Creep For Scms Concretementioning

confidence: 99%

“…In Table 8, the formats of strength-dependent factor (φ fc ) and time development function (φ t ) are similar to the FIB 2010 model because of their simplicity and wide applicability. These formats were also adopted in tensile creep model proposed by Dabarera et al 21 Note that the account for the effect of fly ash and GGBFS. Moreover, to account for the effect of paste content on creep, Bazant et al 52 adopted an alternative method considering the aggregate to binder ratio factor (φ a=b ).…”

Section: Modeling Of Tensile Creep For Scms Concretementioning

confidence: 99%

“…A few studies can be found in the literature relating to prediction models of concrete tensile creep 21–25 . Dabarera et al 21 proved that the FIB 2010 model failed to predict the early age basic tensile creep.…”

Section: Introductionmentioning

confidence: 99%

“…[17][18][19][20] A few studies can be found in the literature relating to prediction models of concrete tensile creep. [21][22][23][24][25] Dabarera et al 21 proved that the FIB 2010 model failed to predict the early age basic tensile creep. Authors also proposed a modified model based on FIB 2010 model to predict the early age basic tensile creep of high performance concrete.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modeling blended cement concrete tensile creep for standard ring test application

Zhang

Afroz

Nguyen

et al. 2022

Structural Concrete

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The tensile creep of concrete with supplementary cementitious materials (SCMs) such as fly ash (FA) and ground granulated blast furnace slag (GGBFS) is investigated in this paper. A total of 21 series of tensile creep tests using dog‐bone specimens under uniaxial tensile loading have been carried out. The cement replacement rates considered were 30% fly ash, 40% and 60% GGBFS. The characteristic compressive strength of concrete was ranging from 25 to 100 MPa. The tests were conducted from the age of 2 days until 28 days. It is observed that the tensile creep of fly ash concretes was slightly lower than that of the reference mixtures without SCM. For GGBFS concrete, the higher the GGBFS content, the higher the tensile creep. Existing creep models, originally developed for creep in compression, could not predict the experimental tensile creep results. Thus, a new tensile creep model was proposed including creep prediction for concrete with fly ash and GGBFS. The new model was calibrated only for controlled environmental conditions (23°C and 50% RH) and has been validated by analyzing the development of concrete tensile stress in the restrained ring test.

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“…In Table 8, the formats of strength‐dependent factor (

φ_{italicfc}

) and time development function (

φ_{t}

φ_{t}

Section: Modeling Of Tensile Creep For Scms Concretementioning

confidence: 99%

Section: Modeling Of Tensile Creep For Scms Concretementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling blended cement concrete tensile creep for standard ring test application

Zhang

Afroz

Nguyen

et al. 2022

Structural Concrete

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show abstract

“…Currently, there are two approaches to HPC creep modeling. One method is modifying the OC creep model by applying an admixture influence function [ 4 , 5 , 6 , 7 , 51 ]. The other is directly constructing an HPC creep model through equal-proportion experiments [ 3 , 4 , 52 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Fluctuating Humidity and Temperature on Creep Deformation in High-Performance Concrete Beams: A Comparative Study between Natural and Laboratorial Environmental Tests

Zhang,

Mao

et al. 2024

Materials

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To investigate the influence of temperature and humidity variations on creep in high-performance concrete beams, beam tests were conducted in both natural and laboratory settings. The findings indicate that the variations in creep primarily stem from temperature changes, whereas humidity changes have little influence on fluctuations in both basic creep and total creep. The influence of humidity on creep is more strongly reflected in the magnitude of creep. Functions describing the influence of temperature and humidity on the creep behavior of high-performance concrete (HPC) subjected to fluctuating conditions are proposed. The findings were employed to examine creep deformation in engineering applications across four places. This study complements the correction method for the creep of members under fluctuating temperature and humidity. This research application can provide a basis for the calculation of the long-term deformation of HPC structures in natural environments.

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Early-age Cracking Control on Concrete with 3D Hooked-End Steel Fiber

Shen

2024

Early-Age Cracking Control on Modern Concrete

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Experimental evaluation and modelling of early-age basic tensile creep in high-performance concrete

Cited by 20 publications

References 40 publications

Modeling blended cement concrete tensile creep for standard ring test application

Modeling blended cement concrete tensile creep for standard ring test application

Investigating the Influence of Fluctuating Humidity and Temperature on Creep Deformation in High-Performance Concrete Beams: A Comparative Study between Natural and Laboratorial Environmental Tests

Early-age Cracking Control on Concrete with 3D Hooked-End Steel Fiber

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