Using Acoustic Emission Methods to Monitor Cement Composites during Setting and Hardening

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. The acoustic emission method is a unique non-destructive method that can detect structural changes as a cement-based composite is setting. It can also detect the onset and growth of cracks during the service life of a cement-based composite since the moment it has been mixed. The paper discusses the use of the acoustic emission method with a focus on the early stage of the lifespan of a cement-based composite including the measures necessary for its use and description of the parameters of acoustic emission signals.

[1]  Alida Mazzoli,et al.  Evaluation of the early-age-shrinkage of Fiber Reinforced Concrete (FRC) using image analysis methods , 2015 .

[2]  Ahmed M. Soliman,et al.  Effect of drying conditions on autogenous shrinkage in ultra-high performance concrete at early-age , 2011 .

[3]  Pieter A. VanderWerf,et al.  The Portland Cement Association's Guide to Concrete Homebuilding Systems , 1994 .

[4]  J. Mier,et al.  Optical Microscopy and Digital Image Analysis of Bond-Cracks in Cement Based Materials , 1994 .

[5]  Feng Xing,et al.  In-situ crack propagation monitoring in mortar embedded with cement-based piezoelectric ceramic sensors , 2016 .

[6]  Vtt Publications,et al.  Early age autogenous shrinkage of concrete , 2001 .

[7]  Mehmet Serkan Yatağan.  The Investigation of the Relationship between Drying and Restrained Shrinkage In View of the Development of Micro Cracks , 2015, GSTF Journal of Engineering Technology.

[8]  Zongjin Li,et al.  Application of acoustic emission technique to detection of concrete cracking and rebar corrosion , 1995 .

[9]  B. S. Choo,et al.  Advanced concrete technology , 2003 .

[11]  Christian U. Grosse,et al.  Advances in construction materials 2007 , 2007 .

[12]  Jiahe Wang,et al.  Evaluation of shrinkage induced cracking in early age concrete: From ring test to circular column , 2017 .

[13]  J.G.M. van Mier,et al.  Temporal and spatial development of drying shrinkage cracking in cement-based materials , 2003 .

[14]  Lars Damkilde,et al.  Early Age Fracture Mechanics and Cracking of Concrete: Experiments and Modelling , 2003 .

[15]  X. Kong,et al.  Effect of pre-soaked superabsorbent polymer on shrinkage of high-strength concrete , 2015 .

[16]  J.G.M. van Mier,et al.  How to study drying shrinkage microcracking in cement-based materials using optical and scanning electron microscopy? , 2002 .

[17]  Libor Topolář,et al.  Acoustic Emission in Protected and Non-Protected Concrete During the First 24 Hours , 2014 .

[18]  Masayasu Ohtsu,et al.  Acoustic Emission Testing in Engineering - Basics and Applications , 2008 .

[19]  Thierry Chotard,et al.  Application of ultrasonic testing to describe the hydration of calcium aluminate cement at the early age , 2001 .

[20]  Zdenek P. Bazant,et al.  RILEM draft recommendation: TC-242-MDC multi-decade creep and shrinkage of concrete: material model and structural analysis* , 2015, Materials and Structures.

[21]  M. Rydval,et al.  Volumetric Changes of the UHPC Matrix and its Determination , 2016 .

[22]  J Grum,et al.  AE signals as laser cutting quality indicators , 2009 .

[23]  Laurent Barcelo,et al.  Autogenous shrinkage of concrete: a balance between autogenous swelling and self-desiccation , 2005 .

[24]  N. Štirmer,et al.  Autogenous shrinkage and expansion related to compressive strength and concrete composition , 2016 .

[25]  Martine Wevers,et al.  Active and passive monitoring of the early hydration process in concrete using linear and nonlinear acoustics , 2009 .

[26]  L. Topolář,et al.  Comprehensive Testing Techniques for the Measurement of Shrinkage and Structural Changes of Fine-Grained Cement-Based Composites during Ageing , 2017 .