Temperature response and moisture transport in damaged concrete under an atmospheric environment

Zhang, Weiping; Min, Hongguang; Gu, Xianglin

doi:10.1016/j.conbuildmat.2016.07.004

Cited by 17 publications

(11 citation statements)

References 23 publications

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“…It indicates that the temperature gradient affects the moisture transfer in concrete under the non-isothermal condition. The same trend was observed in previous studies [ 22 , 23 ].…”

Section: Resultssupporting

confidence: 91%

“…In addition, a higher temperature gradient resulted in a faster increasing slope of moisture distribution. These results indicate clearly that the temperature gradient is a driving force for moisture transfer [ 22 , 23 ].…”

Section: Resultsmentioning

confidence: 99%

“…Under the service condition, however, temperature fluctuation and moisture changes in concrete structures occur simultaneously; both temperature and the temperature gradient must be considered in terms of moisture transfer. In the literature, the effect of the temperature gradient on moisture transfer was treated by using a separating term in the moisture flux equation, and this coupling effect was shown to be significant under non-isothermal conditions [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Temperature on Moisture Transport in Concrete

Wang

2017

Materials

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Most concrete structures and buildings are under temperature and moisture variations simultaneously. Thus, the moisture transport in concrete is driven by the moisture gradient as well as the temperature gradient. This paper presents an experimental approach for determining the effect of different temperature gradients on moisture distribution profiles in concrete. The effect of elevated temperatures under isothermal conditions on the moisture transport was also evaluated, and found not to be significant. The non-isothermal tests show that the temperature gradient accelerates the moisture transport in concrete. The part of increased moisture transfer due to the temperature gradient can be quantified by a coupling parameter DHT, which can be determined by the present test data. The test results indicated that DHT is not a constant but increases linearly with the temperature variation. A material model was developed for DHT based on the experimental results obtained in this study.

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“…It indicates that the temperature gradient affects the moisture transfer in concrete under the non-isothermal condition. The same trend was observed in previous studies [ 22 , 23 ].…”

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Temperature on Moisture Transport in Concrete

Wang

2017

Materials

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“…Temperature field in concrete has a significant effect on the durability of concrete structures. Carbonation, corrosion of steel bars in concrete, chloride ingress in concrete are closely related to the temperature field in concrete [6]. There are many non-destructive tests available to monitor the health of the concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Temperature of the Core of Concrete during Progressive Compressive Loading using Temperature Sensors

Bindhusha*,

Narayana,

Kumar

2020

IJITEE

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Structural health monitoring and health diagnosis have become the integral parts of 21st century structural engineering practice. Many non-destructive tests are being used to assess the condition of the concrete in existing RCC structures. In addition to these Non-destructive tests sensing systems are also used to monitor the structural health of RCC structures. If a structure fails pre maturely; the consequences are not only the in effective usage of materials and reduction in life span of structures but also loss of money and sometimes loss of lives. When the load is applied on a structural element, it undergoes some deformation or volume change. Deterioration of concrete may be due to many reasons. But the serviceability is very important for the structures. During the application of external loading, concrete structures, and offer resistance and during this process, energy is utilized by the structure to resist the external load. The concrete is solid like a stone and some heat is developed in concrete during the process of loading. By embedding the temperature sensors in the concrete, it is possible to read the temperature developed inside the concrete. In the present investigation an attempt is made to find the change in temperature of concrete at different ages at regular intervals of progressive compressive loading starting from no load to failure of concrete. This will be useful for estimating the health of concrete structures as it is possible to find the temperature changes and the condition of concrete at different percentages of ultimate load.

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“…It s necessary to take into consideration the processing and presentation of the data together with the durability of the sensor itself. Nowadays, embedded sensors are used to measure the following parameters: chloride content [75,78,86,95], pH [106,107], moisture [108,109], i corr [46,73,80,81,88], temperature [93,108,110], potential [89,91], ρ [43,[111][112][113], oxygen transport [72,78] and i gal [82,90].…”

Section: Corrosion Assessment With Electrochemical Sensorsmentioning

confidence: 99%

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Figueira¹

2017

Applied Sciences

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Several methods for corrosion monitoring of reinforced concrete structures (RCS) have been proposed in the last few decades. These systems may be used either in new, existing or repaired structures. The corrosion monitoring can be performed by different methodologies. These may or may not be destructive, use different degrees of complexity and cost, and provide information on the progression and kinetics of the corrosion phenomena. The destructive methods are limited to sampling. Therefore, these may not be representative of the whole structure, which is extremely important in RCS with large heterogeneities both in terms of materials used and in terms of the exposure environment. Within this context, non-destructive methods have been widely developed, which are intended to provide quick information about the entire structure. Ideally, these systems should be able to detect the corrosion state of the steel inside the concrete, the main causes of corrosion and the evolution of corrosion phenomena over time. This manuscript reviews and summarizes the actual state of the art and the main achievements in the field of electrochemical sensors based on non-destructive methods for corrosion monitoring of RCS in the last few years. The challenges and perspectives in this field will also be discussed.

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Temperature response and moisture transport in damaged concrete under an atmospheric environment

Cited by 17 publications

References 23 publications

The Effect of Temperature on Moisture Transport in Concrete

The Effect of Temperature on Moisture Transport in Concrete

Measurement of Temperature of the Core of Concrete during Progressive Compressive Loading using Temperature Sensors

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

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