Tests on Frequency Characteristics of Acoustic Emission in Concrete Material with Different Age

Ji, Hongguang; Zhou, Yu; Wen, Feifei; Zhang, Lei

doi:10.1109/iceee.2010.5661392

Cited by 2 publications

(2 citation statements)

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“…e clay and gypsum with weak cementing performance weaken the internal structure of CPB. e cohesion of bonding elements and the bonding strength between bonding elements and aggregate particles are relatively small [44].…”

Section: Type Of Cementing Materials E Ects On the Mechanicalmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of Cemented Paste Backfill under Different Gradations of Aggregate Particles and Types and Contents of Cementing Materials

Han

et al. 2019

Advances in Materials Science and Engineering

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Obtaining the optimal gradation of aggregate particles is beneficial for improving the strength of cemented paste backfill (CPB). Consequently, the uniaxial compression tests with acoustic emission (AE) monitoring were performed on CPB, for which the aggregate particles satisfied the Talbot grading theory. The effects of the Talbot indices of aggregate particles and types and contents of cementing materials on the mechanical properties of CPB were analyzed. The AE characteristics and stress-strain behaviors of CPB were discussed. The results show that the specific Talbot index reflected the optimal strength and deformation properties of CPB is 0.45, and the maximum UCS is 7.6 MPa. The mechanical properties of CPB also can be optimized by changing the type of cementing material and increasing the content of cementing material. The effects of the Talbot indices of aggregate particles and types and contents of cementing materials on the crack damages reflected by the AE signals of CPB are mainly observed in the oa stage and ab stage during the loading process.

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Section: Type Of Cementing Materials E Ects On the Mechanicalmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of Cemented Paste Backfill under Different Gradations of Aggregate Particles and Types and Contents of Cementing Materials

Han

et al. 2019

Advances in Materials Science and Engineering

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“…We have done sound emission data receiving of the concrete cracking process through sound emission receiver apparatus, and have got the sound emission data curve, and through which judge the destructive condition of the concrete, and adopted the reinforcement measures of the concrete according to the results we've got, thus we have to analysis the data we received. Reference [6] established the relation equation of acoustic emission event rate and the concrete material's stress and strain parameter through coupling constitutive model, which can make use of the stress level of the concrete to judge the acoustic emission event rate of the concrete, however, the use effect of the equation will need more experiments and practical engineering to test. The ascertain of the fracture process zone of the concrete in the sound emission technology is very difficult problem, the researchers have made sound emission three dimensional positioning technology to judge the fracture process zone, provided new ways for the sound emission technology of the concrete.…”

Section: The Analysis On Concrete Acoustic Emission Technologymentioning

confidence: 99%

Research Status and Prospect of Concrete Acoustic Emission Technology

Zhang¹,

Zhang

2012

AMM

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By discussing the current research status of the concrete acoustic emission technology from four aspects as: the concrete acoustic emission of different conditions; the characteristics of the concrete acoustic emission; the Kaiser effect and Felicity effect of the concrete acoustic emission and the analysis of the concrete acoustic emission data. The concrete acoustic emission research should be done with the practical project, and establish effective processing and analyzing technology of the concrete acoustic emission, to apply the concrete acoustic emission technology better to the measurement of real project.

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Tests on Frequency Characteristics of Acoustic Emission in Concrete Material with Different Age

Cited by 2 publications

References 0 publications

Experimental Investigation on Mechanical Properties of Cemented Paste Backfill under Different Gradations of Aggregate Particles and Types and Contents of Cementing Materials

Experimental Investigation on Mechanical Properties of Cemented Paste Backfill under Different Gradations of Aggregate Particles and Types and Contents of Cementing Materials

Research Status and Prospect of Concrete Acoustic Emission Technology

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