Sulfate attack resistance of self-compacting concrete with residue of masonry

Silva, Yimmy Fernando; Delvasto, Silvio

doi:10.1016/j.conbuildmat.2020.121095

Cited by 11 publications

(7 citation statements)

References 48 publications

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“…An electronic scale with an inductivity of 0.01g was used to test the mass loss of concrete after each dry-wet cycle. Referring to the experimental method (21) in GB/T50082-2009, when the mass loss of concrete reaches 5%, the concrete is judged to have failed. Calculation formula for mass loss of concrete specimen.…”

Section: • Mass Datamentioning

confidence: 99%

“…Liao based on different soaking time of concrete under sulfate ion concentration distribution and nominal stress-strain curve, adopt the method of innovation for the different content of sulfate ion the true stress-strain curve of concrete, this paper proposes a concrete member structure can well predict sulfate erosion performance of actual constitutive model 20 . Silva immersed self-compacting concrete in 5% Na2SO4 and MgSO4 solutions to evaluate the change in mass, loss of mechanical strength and linear expansion, which were reflected in the change in concrete length, loss of mass and compressive strength 21 .…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel based on ARIMA Model

Liu¹,

Chen²,

Tao³

et al. 2021

Preprint

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Sulfate erosion is a major cause of concrete durability deteriorations, especially for the service tunnels which are in sulfate erosion for a long time. Accurately predicting the concrete damage failure under sulfate erosion has been a challenging problem in the evaluation and maintenance of concrete structures. Here we design the dry-wet cycle test of service tunnel concrete under sulfate erosion, and analyze the Elastic relative dynamic modulus(Erd) and mass under 35 times cycle periods. Then we develop an autoregressive integrated moving average (ARIMA) prediction model linking damage failure to Erd and mass. The results show that the deterioration of concrete first increased and then decreased with an extension of the dry–wet cycle period. Moreover, based on a finite set of training data, the proposed prediction approach shows high accuracy for the changes of concrete damage failure parameters in or out of the training dataset. The ARIMA method is proven to be feasible and efficient for predicting the concrete damage failure of service tunnel under sulfate erosion for a long time.

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Section: • Mass Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel based on ARIMA Model

Liu¹,

Chen²,

Tao³

et al. 2021

Preprint

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show abstract

“…The resistance to seawater corrosion of the cementitious systems has been studied and it is found that the decline in compressive strength is mainly due to the attacks of chloride, sulfate, and magnesium ions in seawater (Li et al, 2017b). In addition, Yimmy Fernando Silva et al had investigated the replacement of Portland cement by the residue of masonry in selfcompacting concrete to improve the resistance to sulfates (Na 2 SO 4 and MgSO 4 ), a decrease of more than 50% in expansion and less degradation of the compressive strength, caused by lower content of C 3 A (Silva and Delvasto, 2021).…”

Section: Introductionmentioning

confidence: 99%

Monitoring the hydration behavior of hardened cement paste affected by different environmental pH regimes

Zhu

Liu²,

Zhang³

2022

Front. Mater.

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The purpose of this paper is to investigate the hydration behavior of hardened Portland cement paste cured in different environmental pH values by compressive strength, XRD, TG-DTG and EIS. Meanwhile, a newly proposed equivalent circuit model is built to establish the correlation between the electrochemical parameters and compressive strength of cement paste. The results show that the matrix strength, hydration products and pore structure of hardened cement paste are significantly affected by different pH values. According to the in-situ nondestructive monitoring of EIS, the evaluating for the matrix strength of cement-based materials can be achieved by calculating the resistivity of discontinuous connected pores (Rcp) in the recommended equivalent circuit model.

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“…This paper proposes a concrete member structure that can predict sulfate erosion performance of the actual constitutive model [ 20 ]. Silva immersed self-compacting concrete in 5% Na 2 SO 4 and MgSO 4 solutions to evaluate the changes in mass, loss of mechanical strength, and linear expansion, which were reflected in the change in concrete length, loss of mass, and compressive strength [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel Based on ARIMA Model

et al. 2021

View full text Add to dashboard Cite

Sulfate erosion is a major cause of concrete durability deteriorations, especially for the service tunnels that suffer sulfate erosion for a long time. Accurately predicting the concrete damage failure under sulfate erosion has been a challenging problem in the evaluation and maintenance of concrete structures. Here we design the dry–wet cycle test of service tunnel concrete under sulfate erosion and analyze the Elastic relative dynamic modulus (Erd) and mass under 35 times cycle periods. Then we develop an autoregressive integrated moving average (ARIMA) prediction model linking damage failure to Erd and mass. The results show that the deterioration of concrete first increased and then decreased with an extension of the dry–wet cycle period. Moreover, based on a finite set of training data, the proposed prediction approach shows high accuracy for the changes of concrete damage failure parameters in or out of the training dataset. The ARIMA method is proven to be feasible and efficient for predicting the concrete damage failure of service tunnels under sulfate erosion for a long time.

show abstract

Sulfate attack resistance of self-compacting concrete with residue of masonry

Cited by 11 publications

References 48 publications

Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel based on ARIMA Model

Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel based on ARIMA Model

Monitoring the hydration behavior of hardened cement paste affected by different environmental pH regimes

Analysis and Prediction of Sulfate Erosion Damage of Concrete in Service Tunnel Based on ARIMA Model

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