Monitoring the setting process of eco-binders by ultrasonic P-wave and S-wave transmission velocity measurement: Mortar vs concrete

Carette, Jerome; Staquet, Stéphanie

doi:10.1016/j.conbuildmat.2016.02.019

Cited by 44 publications

(21 citation statements)

References 36 publications

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“…The swelling amplitude values obtained from the experiments are shown in Table 3, jointly with the values of the identified parameters of Eq. (15). This table confirms the observations of Figs.…”

Section: Swelling Deformationsupporting

confidence: 91%

“…This parameter was measured with the ultrasonic method, according to a new methodology developed in Ref. [15]. The final setting time is defined as the time when the dynamic elastic modulus curve, determined through the coupled measurement of ultrasonic P-wave and S-wave velocity, reaches its maximal rate of increase.…”

Section: Test Setups 221 Setting Time Determination From Ultrasonimentioning

confidence: 99%

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Unified modelling of the temperature effect on the autogenous deformations of cement-based materials

Carette

Staquet

2018

Cement and Concrete Composites

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Temperature effects are of primary importance for designing concrete structures. Some of the early age temperature effects on the concrete behaviour can be accurately taken into consideration by well-known maturity functions. However, the effect of temperature on the autogenous deformations development is more complex, and results in contradictory evidence. This paper studies the influence of various isothermal curing temperatures from 10°C to 30°C on the autogenous deformations of concrete. Binary and ternary binders containing up to 30% of limestone filler and 70% of blast-furnace slag are studied. The amplitude of both the self-desiccation deformation and the early age swelling deformation are observed to decrease with increasing temperature, whatever the binder nature. Mechanisms for this observation are suggested, and a corresponding model is developed. The effect of the binder nature, age and temperature on the autogenous deformations is assessed with this model. Based on this new model, it is shown that the effect of temperature on the autogenous deformation development can be either beneficial or detrimental, depending on the nature of the binder.

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Section: Swelling Deformationsupporting

confidence: 91%

Section: Test Setups 221 Setting Time Determination From Ultrasonimentioning

confidence: 99%

Unified modelling of the temperature effect on the autogenous deformations of cement-based materials

Carette

Staquet

2018

Cement and Concrete Composites

Self Cite

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“…The mass density is obtained as the sample mass/volume ratio. The longitudinal dynamic modulus can then be determined with Equation (18). The analyzed dynamic modulus based on Equation (18) was then compared with the measured results from ASTM C215 in Table 4.…”

Section: Dynamic Modulus Analysis With Ultrasonic Parameters On Hardementioning

confidence: 99%

“…The shear wave velocity was found more appropriate to determine the final setting time than the compression wave velocity. The method was further applied on the concrete samples [18], and the effect of aggregate on the setting process was also analyzed. Subramaniam [19] studied the steel reinforced concrete with the ultrasonic measurement.…”

Section: Of 18mentioning

confidence: 99%

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Ultrasonic Techniques for Air Void Size Distribution and Property Evaluation in Both Early-Age and Hardened Concrete Samples

et al. 2017

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Entrained air voids can improve the freeze-thaw durability of concrete, and also affect its mechanical and transport properties. Therefore, it is important to measure the air void structure and understand its influence on concrete performance for quality control. This paper aims to measure air void structure evolution at both early-age and hardened stages with the ultrasonic technique, and evaluates its influence on concrete properties. Three samples with different air entrainment agent content were specially prepared. The air void structure was determined with optimized inverse analysis by achieving the minimum error between experimental and theoretical attenuation. The early-age sample measurement showed that the air void content with the whole size range slightly decreases with curing time. The air void size distribution of hardened samples (at Day 28) was compared with American Society for Testing and Materials (ASTM) C457 test results. The air void size distribution with different amount of air entrainment agent was also favorably compared. In addition, the transport property, compressive strength, and dynamic modulus of concrete samples were also evaluated. The concrete transport decreased with the curing age, which is in accordance with the air void shrinkage. The correlation between the early-age strength development and hardened dynamic modulus with the ultrasonic parameters was also evaluated. The existence of clustered air voids in the Interfacial Transition Zone (ITZ) area was found to cause severe compressive strength loss. The results indicated that this developed ultrasonic technique has potential in air void size distribution measurement, and demonstrated the influence of air void structure evolution on concrete properties during both early-age and hardened stages.

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Ultrasonic Techniques for Determination and Monitoring Various Properties of Cementitious Materials at Early Ages

Gabrijel

Staquet

Krüger

et al. 2020

Advanced Techniques for Testing of Cement-Based Materials

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Monitoring the setting process of eco-binders by ultrasonic P-wave and S-wave transmission velocity measurement: Mortar vs concrete

Cited by 44 publications

References 36 publications

Unified modelling of the temperature effect on the autogenous deformations of cement-based materials

Unified modelling of the temperature effect on the autogenous deformations of cement-based materials

Ultrasonic Techniques for Air Void Size Distribution and Property Evaluation in Both Early-Age and Hardened Concrete Samples

Ultrasonic Techniques for Determination and Monitoring Various Properties of Cementitious Materials at Early Ages

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