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Fresh Concrete Curing Monitoring Using Acoustic Emission

Di: Ava

Results were complemented by Acoustic Emission (AE), providing a full methodology of non-intrusive techniques for monitoring the crucial fresh state of concrete.

Curing compounds for fresh or hardened concrete Fattuhi, N.I. | Elsevier | 1986 Effect of Cold Curing Water on Concrete Ronald L Kozikowski | Online Contents | 2016 Fresh Concrete Curing Monitoring Using Acoustic Emission

Characterization of Acoustic Emissions from Concrete Based on Energy ...

Early-age concrete undergoes displacements and volume changes due to ongoing processes such as settlement, hydration, shrinkage, and cracking, which can strongly affect its durability and long-term performance. In this paper, fresh concrete is monitored by the non-destructive techniques of Acoustic Emission (AE) and Digital Image Correlation (DIC). Elastic waves Abstract: In fresh concrete, early-age shrinkage is affected by many factors, such as thermal deformations moisture loss and the hydration reaction. Novel admixtures for internal curing, like SuperAbsorbent Polymers (SAPs) can be used to mitigate the shrinkage phenomenon. These admixtures strongly modify the microstructure influencing the Acoustic Emission (AE) activity.

ACOUSTIC EMISSION TECHNIQUES STANDARDIZED FOR CONCRETE STRUCTURES

Passive energy recording using Acoustic Emission (AE) techniques has been used to evaluate the structural activity in concrete at early ages [14], showing periods of intense microstructural changes during the curing process. Abstract The aim of this study is the real-time monitoring of the different ongoing processes in fresh concrete using Acoustic Emission (AE). Microstructural changes occurring in freshly poured concrete during curing have been monitored on a laboratory scale using a combination of the Acoustic Emission (AE) Technique with linear and nonlinear ultrasonic/elastic wave spectroscopy. The AE

Table 1. Composition and properties of fresh composites. – „Using Acoustic Emission Methods to Monitor Cement Composites during Setting and Hardening“ Acoustic emission techniques are used to detect cement particles‘ settlement, segregation, cavitation, migration of water, the formation of hydrates, and early micro-cracking of CBMs in a fresh

These admixtures strongly modify the microstructure influencing the Acoustic Emission (AE) activity. Acoustic emission has been proven adequate to monitor activities during the curing of fresh cement-based materials. However, so far, it is difficult to distinguish the original mechanisms due to the overlapping nature of the processes that take

This paper is focused on monitoring the internal curing of concrete with superabsorbent polymers using the technique of Acoustic Emission (AE). SAPs are particles that can swell by absorbing water when exposed to it, and later release it back to the cementitious matrix promoting internal curing and therefore autogenous healing [2].

Despite the fact that concrete is the most widely used construction material, conventional techniques for the estimation of the mechanical properties are only applicable to the hardened material. Moreover, concerning the fresh concrete examination, the already existing techniques provide only qualitative information, are not representative over the full time period Microstructural changes occurring in freshly poured concrete during curing have been monitored on a laboratory scale using a combination of the Acoustic Emission (AE) Technique with linear and Characterization of the origin of different processes occurring in cement paste during hydration is complex. Although acoustic emission (AE) monitoring has been used before, a qualitative relation between the microstructural formation or other early-age processes and the number or parameters of AE signals has not been established.

(PDF) Monitoring Damage Using Acoustic Emission Source Location and ...

These admixtures strongly modify the microstructure influencing the Acoustic Emission (AE) activity. Acoustic emission has been proven adequate to monitor activities during the curing of fresh cement-based materials. However, so far, it is difficult to distinguish the original mechanisms due to the overlapping nature of the processes that take Important improvements have been made recently in monitoring fresh and hardening cementitious materials using Acoustic Emission (AE) [3, 4]. Acoustic emission is a passive, high-sensitivity technique that records irreversible disturbances in the medium, in the form of elastic waves. In the present paper, acoustic emission (AE) is applied to monitor internal curing of fresh concrete. Processes taking place during the fresh state of concrete prove to be very acoustically active

‪Prabhat Ranjan Prem‬

Request PDF | Active SAP desorption control in concrete through acoustic emission for optimized curing | The quality and durability of concrete strongly depend on the mixing and curing processes

Fresh Concrete Curing Monitoring Using Acoustic Emission Chapter Mar 2023 Ashwin P. S. Dias Gerlinde Lefever Dimitrios G. Aggelis Cement-based composites belong among the basic building materials used in civil engineering. Their properties are given not only by their composition but also by their behaviour after mixing, as well as by the methods of curing. Monitoring the processes and phenomena during the early stages of setting is vital for determining the resulting properties and durability.

Reported studies show that a considerable amount of work has been carried out for the assessment of concrete using different types of nondestructive testing and evaluation (NDT&E) methods such as

Influence of pore size distribution on concrete cracking with different AEA content and curing age using acoustic emission and low-field NMR The acoustic emission-based method presented in this paper allows damage detection and identification in the early age concrete (before loading) for different concrete compositions, curing conditions, temperature variations, and in reinforced concrete.

Hence, monitoring the concrete curing is essential to prevent undesirable behavior. Techniques such as Acoustic Emission (AE) have proven very promising for monitoring the curing of cement-based materials due to their high sensitivity level. This investigation employed acoustic emission (AE) technique to monitor the strength development at an early age of self-consolidating concrete (SCC) mixtures with different supplementary cementitious materials (SCM’s).

Study on mechanical acoustic emission sources in fresh concrete

In this study, non-destructive acoustic techniques were adopted to obtain information about various processes occurring inside cementitious materials. During the fresh stage, acoustic emission (AE) was used to monitor the hydration process of mixtures with and without superabsorbent polymers (SAPs). Results showed that the process of internal curing, induced Acoustic emission has been proven adequate to monitor activities during the curing of fresh cement -based materials.

In the present paper, acoustic emission (AE) is applied to monitor internal curing of fresh concrete. Processes taking place during the fresh state of concrete prove to be very acoustically active Methods such as acoustic emission (AE) have proven promising for monitoring the curing of cementitious materials due to their high sensitivity and simple application. Active SAP desorption control in concrete through acoustic emission for optimized curing par Korda, Eleni;Cousture, Annelise;Tsangouri, Eleni;Snoeck, Didier ;De Schutter, Geert;Aggelis, Dimitrios G. Référence Cement & concrete composites, 160, page (106067) Publication A Paraître, 2025-07

Abstract Acoustic emission testing has proven very useful as a non-invasive monitoring method for several material processes. Recently several studies have emerged related to fresh concrete monitoring, as AE has the sensitivity to record waves from many different processes, even though no external load is applied to the specimens.