Monitoring of Freeze-Thaw Cycles in Concrete Using Embedded Sensors and Ultrasonic Imaging

Ranz, Javier; Aparicio, S.; Romero, H. L.; Casati, M. J.; Molero, M.; Hernández, Melchor G.

doi:10.3390/s140202280

Cited by 37 publications

(19 citation statements)

References 29 publications

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“…This leads too reduction in the strength of the mortar or concrete. The movement of water in the specimens gives rise the change of the weight loss due to the freezing-thawing cycles where the deteriorated zone filled with water due to the cracking occurs in the specimens so the change in the weight of the specimens recorded (Zeng et al, 2011;Ranz et al, 2014). Fig.…”

Section: Effect Of Freezing-thawing Cycles On the Weight Lossmentioning

confidence: 99%

Effect of freezing-thawing on concrete behavior

Etman¹,

Ahmed²

2018

CJCRL

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This study aims to determine the effect of change of temperature (freezing-thawing cycles) on the behavior of the mortar and the concrete. Also, the evaluation of the effect of air entering for improving the durability of the mortar and concrete was discussed. 23 mixes were cast to evaluate the purpose of this study. Cement types (Portland cement and limestone cement), aggregate types (dolomite and gravel), dosages of air entering 0.01, 0.1, 0.15 and 0.2% of cement weight and freezing thawing cycles (50, 100, 150, 200, 300 and 400 cycles) were considered. Relative dynamic modules of elasticity which is illustrated the internal cracks growth, durability factor and losses of weight were evaluated. Empirical correlations were formulated. The results showed that; 0.15% air entrained of cement weight improve the durability in term of freezing-thawing; where the durability factor for the mixes was ≥ 85% that exposed to freezing-thawing cycles in range 0-200. Up to 200 cycles of freezing-thawing cycles did not effect on the compressive strength of the mixes and the durability of the mortar and the concrete. It is recommended that more than 300 freezing-thawing cycles must be avoided.

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Section: Effect Of Freezing-thawing Cycles On the Weight Lossmentioning

confidence: 99%

Effect of freezing-thawing on concrete behavior

Etman¹,

Ahmed²

2018

CJCRL

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“…However, these indirect techniques are suitable in laboratory conditions and not applicable to detect F-T damage degree of the in-situ concrete structure. Recently, ultrasonic imaging [ 31 , 32 ], X-ray computed tomography, and acoustic emission techniques [ 33 , 34 ] have been applied to non-destructively and quantitatively estimate the deterioration degree of mortar and concrete after being subjected to F-T cycle by detecting the change on the microstructure. Although ultrasonic imaging and X-ray computed tomography implement the visualization of the microstructure of mortar and concrete samples and detects the generation of crack, none of them might be suitable to real-time monitor and evaluate the F-T deterioration degree of field concrete structure.…”

Section: Introductionmentioning

confidence: 99%

Developing a Multi-Element Sensor to Non-Destructively Monitor Several Fundamental Parameters Related to Concrete Durability

Jin

Zeng

et al. 2020

Sensors

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A design scheme of multi-element sensor which included electrical resistivity probes, multiple Cl− selective electrodes, and a steel corrosion monitoring system was proposed in this work. Embedding this multi-element sensor in concrete enables the real-time and non-destructive monitoring of internal electrical resistivity, free Cl− (Clf) contents in the concrete pore solution at different depths, and steel corrosion parameters. Based on the monitoring data obtained by the multi-element sensor, the freezing-thawing (F-T) damage degree, the Clf diffusion coefficient, the quantitative relation between F-T damage degree and Clf diffusion coefficient, the initiation period of steel corrosion, and the critical content related to steel corrosion are determined. To conclude, the multi-element sensor provides key durability parameters for the establishment of the Clf diffusion model, the assessment of health condition, and the prediction of service life of concrete under the coexistence of the F-T cycle and Cl−.

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“…In order to monitor the construction quality of airport stone column machines accurately and quickly, it is necessary to research and develop an intelligent stone column monitoring system with the characteristics of real-time use, continuity, automation, and high accuracy. It must automatically collect data and realize the real-time, dynamic, and nondestructive [4] measurement of the relevant parameters in the construction process, in order to better meet the actual needs of airport construction and management. It should realize an advancement of the stone column monitoring and control management mode from the traditional planar approach to a three-dimensional, comprehensive, and real-time information mode.…”

Section: Introductionmentioning

confidence: 99%

Developing an Intelligent Monitoring Technology for Airport Stone Column Machines

Tang

Yuan

et al. 2020

Sensors

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Most of the construction machinery for vibro-sinking stone columns, which are widely used in China, needs to be improved in terms of degree of automation. Engineering quality control is mainly carried out post-inspection; consequently, it is difficult to control the construction quality in real time. According to the construction characteristics of traditional stone column machines, we established the theory and model for the real-time monitoring of stone column construction, as well as put forward an intelligent monitoring method for stone column machines. With the comprehensive application of critical technologies such as the Global Navigation Satellite System (GNSS) measurement technology, laser ranging sensors, and massive data processing, an intelligent data acquisition technique and associated monitoring equipment for stone column construction machines are developed. The data acquisition and storage of crucial construction parameters, such as pile depth, pile point co-ordinates, bearing layer current, and reverse insertion times, are realized. A large number of actual construction data are collected and the construction quality parameters of stone column machines are obtained. By comparison with third-party detection data, it is verified that the intelligent monitoring technique for stone column machines proposed in this paper is feasible.

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Monitoring of Freeze-Thaw Cycles in Concrete Using Embedded Sensors and Ultrasonic Imaging

Cited by 37 publications

References 29 publications

Effect of freezing-thawing on concrete behavior

Effect of freezing-thawing on concrete behavior

Developing a Multi-Element Sensor to Non-Destructively Monitor Several Fundamental Parameters Related to Concrete Durability

Developing an Intelligent Monitoring Technology for Airport Stone Column Machines

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