Monitoring fresh concrete by ultrasonic transmission measurements: Exploratory multi-way analysis of the spectral information

Monitoring the setting process of mortars by ultrasonic P and S-wave transmission velocity measurement

“…Most of these correlations imply the measurement of compression wave (P-wave) propagation, due to the easy implementation of such tests compared to the shear wave (S-wave) propagation monitoring. Through the past 20 years, transmission properties of the P-waves (velocity [2][3][4][5][6][7][8][9][10][11][12][13], energy [4,[12][13][14], frequency content [14][15][16]) were therefore thoroughly studied.…”

Recommendation of RILEM TC 218-SFC: Sonic methods for quality control of fresh cementitious materials*

“…The scores of the second component and to a lesser degree of the first component seem to increase with slower setting behaviour. Some samples deviate from these general trends, which is discussed in more detail in other publications [1,12]. It can be concluded that the sample scores are related to the setting behaviour of the corresponding concrete mixture.…”

Relation between ultrasound measurements and phase evolution in accelerated cementitious matrices

“…Kinetics Phase evolution [1,12,14,15] • • • [2][3][4][5][6][7][8][9][10]13] • • [11] • • • [16] • • • [17] • •…”

“…Ultrasound measurements are a versatile tool to characterize cementitious matrices. Several ultrasound techniques have been used to evaluate the setting process [1][2][3], mechanical strength [4,5], porosity [6][7][8][9], permeability [6][7][8][9] and durability [10,11] of pastes, mortars and concrete during the past years. The influence of different superplasticizers and additions on early strength development has been analyzed by [12][13][14][15].…”