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Journal articles on the topic 'Concrete Ageing'

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1

Van Breugel, K., and T. A. Van Beek. "Ageing of old and modern concrete structures – Observations and research." Revista ALCONPAT 7, no. 1 (2017): 57–72. http://dx.doi.org/10.21041/ra.v7i1.174.

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Ageing of old and modern concrete structures – Observations and researchABSTRACTAgeing is an inherent feature of nature. Yet it seems to be a rather new topic in both science and engineering. The main reason for increasing attention for ageing as a topic is the growing awareness that, particularly in industrialized countries, ageing of our assets is a financial burden for the society and affects the overall sustainability of our planet. In this contribution, the urgency and challenges of ageing of concrete structures are addressed. The complexity of ageing problems will be illustrated by looki
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2

Bamforth, P. B., and W. F. Price. "The Long-Term Properties of Concrete Used in Prestressed Concrete Pressure Vessels." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 208, no. 2 (1994): 123–34. http://dx.doi.org/10.1243/pime_proc_1994_208_021_02.

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Data are presented on the late-life properties of concretes used in prestressed concrete pressure vessels (PCPV) and containment structures. The effects of ageing under simulated PCPV conditions are discussed.
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3

MOCEIKIS, Rimvydas, Asta KIČAITĖ, Gintautas SKRIPKIŪNAS, and Aleksandrs KORJAKINS. "AGEING MODELS AND ACCELERATED AGEING TESTS OF GLASS FIBER REINFORCED CONCRETE." Engineering Structures and Technologies 10, no. 1 (2018): 10–17. http://dx.doi.org/10.3846/est.2018.1467.

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Glass fiber reinforced concrete (GRC) is used for 40 years to create world’s most stunning and complex architectural elements due to its high mechanical properties, particularly flexural strength. Yet it is very important to note that any type of glass fibers in the concrete matrix are undergoing complex ageing processes, resulting to significant decrease of initial mechanical characteristics of this composite material under natural weathering conditions. Aspects of GRC durability are mainly dependent from the properties of fibers and interaction between them and concrete matrix. In this artic
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4

Yu, Xin, Quantao Liu, Pei Wan, et al. "Effect of Ageing on Self-Healing Properties of Asphalt Concrete Containing Calcium Alginate/Attapulgite Composite Capsules." Materials 15, no. 4 (2022): 1414. http://dx.doi.org/10.3390/ma15041414.

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Calcium alginate capsules within asphalt concrete can gradually release interior asphalt rejuvenator under cyclic loading to repair micro cracks and rejuvenate aged asphalt in-situ. However, asphalt pavement will become aged due to environmental and traffic factors during the service period. In view of this, this paper investigated the effect of ageing on the healing properties of asphalt concrete containing calcium alginate/attapulgite composite capsules under cyclic loading. The capsules were fabricated using the orifice-bath method and the morphological structure, mechanical strength, therm
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Xu, Shi, Xueyan Liu, Amir Tabaković, and Erik Schlangen. "The influence of asphalt ageing on induction healing effect on porous asphalt concrete." RILEM Technical Letters 3 (February 18, 2019): 98–103. http://dx.doi.org/10.21809/rilemtechlett.2018.74.

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Induction healing is a proven technology which is able to improve the self-healing capacity of asphalt concrete. Healing is achieved via electromagnetic current produced by passing induction machine, where steel asphalt constituents heat up which in turn soften the bitumen in the asphalt layer, allowing it to flow and close cracks, repairing the damage. This paper reports on the study which investigated the influence of ageing on the healing capacity of Porous Asphalt (PA) concrete. Porous Asphalt concrete mix was prepared first, then subjected to an accelerated (laboratory) ageing process usi
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Kucharczyková, Barbara, Petr Daněk, Dalibor Kocáb, and Petr Misák. "Experimental Analysis on Shrinkage and Swelling in Ordinary Concrete." Advances in Materials Science and Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/3027301.

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The paper deals with the experimental determination of shrinkage development during concrete ageing. Three concrete mixtures were made. They differed in the amount of cement in the fresh mixture, 300, 350, and 400 kg/m3. In order to determine the influence of plasticiser on the progress of volume changes, another three concrete mixtures were prepared with plasticiser in the amount of 0.25% by cement mass. Measurements were performed with the goal of observing the influence of cement and plasticiser content on the overall development of volume changes in the concrete. Changes in length and mass
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7

Hall, Jon G. "AI Spots Crumbling Concrete." ITNOW 66, no. 1 (2024): 28–29. http://dx.doi.org/10.1093/itnow/bwae014.

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8

BURMAN, A., D. MAITY, S. SREEDEEP, and I. GOGOI. "LONG-TERM INFLUENCE OF CONCRETE DEGRADATION ON DAM–FOUNDATION INTERACTION." International Journal of Computational Methods 08, no. 03 (2011): 397–423. http://dx.doi.org/10.1142/s0219876211002472.

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The dam–foundation interaction behavior under the application of seismic load has been investigated in the present paper using finite element technique in the time domain. Since the dam face is in constant contact with water, concrete degradation due to hygromechanical loading is inevitable and should be considered in the analysis procedure. This ageing process of concrete leads to loss of stiffness and strength of the material. Therefore, to assess the behavior of the dam at a later stage of its life, it is important to determine the proper strength of the concrete at a certain age. An approa
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9

Radziszewski, Piotr. "MODIFIED ASPHALT MIXTURES RESISTANCE TO PERMANENT DEFORMATIONS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 13, no. 4 (2007): 307–15. http://dx.doi.org/10.3846/13923730.2007.9636451.

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Permanent deformations, primarily in the form of ruts, are one of the basic asphalt pavement damages impairing its service properties. Application of appropriate asphalt mixtures and binder modification are effective methods for improving asphalt courses resistance. While being manufactured, stored, fitted into a road pavement and during long term service, bitumen binders and asphalt mixtures are subject to continuous unfavourable ageing processes during which pavement courses characteristics change considerably, resistance to permanent deformations being among them. This article presents rut
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10

Sistonen, Esko, Fahim Al-Neshawy, and Miguel Ferreira. "Ageing Management Platform For NPP Concrete Structures." IABSE Symposium Report 103, no. 1 (2015): 280–87. http://dx.doi.org/10.2749/222137815815622942.

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11

Hanna, S., and R. Jones. "Composite wraps for ageing infrastructure: concrete columns." Composite Structures 38, no. 1-4 (1997): 57–64. http://dx.doi.org/10.1016/s0263-8223(97)00041-x.

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12

Dunster, Andrew, and Ian Holton. "Assessment of ageing high alumina cement concrete." Structural Survey 18, no. 1 (2000): 16–21. http://dx.doi.org/10.1108/02630800010322454.

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13

Alasali, Bader Eddin, and Srinivasa Reddy N. "Ageing Behavior Analysis of Concrete Tunnel Lining." International Journal of Civil Engineering 9, no. 11 (2022): 43–49. http://dx.doi.org/10.14445/23488352/ijce-v9i11p106.

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14

Radziszewski, Piotr, Robert Ziolkowski, and Donatas Čygas. "TECHNOLOGICAL AGEING INFLUENCE ON VISCOSITY OF SELECTED BITUMENS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 9, no. 1 (2003): 20–24. http://dx.doi.org/10.3846/13923730.2003.10531297.

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The article presents one of the main parameters of bitumens used for asphalt concrete mixtures production—viscosity. The authors analyse technological ageing process and its influence on viscosity of selected bitumens. Dependence of the viscosity of bitumens on type and amount of the additives, temperature and ageing is described through experiments. Research findings show that the employment of different types of additives increases bitumen viscosity and positively effect the bitumen ageing resistance. Practical application of presented conclusions and recommendations will enable to improve t
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15

Jamshaid, Hafsa, Husnain Ali, Rajesh Kumar Mishra, Shabnam Nazari, and Vijay Chandan. "Durability and Accelerated Ageing of Natural Fibers in Concrete as a Sustainable Construction Material." Materials 16, no. 21 (2023): 6905. http://dx.doi.org/10.3390/ma16216905.

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This paper presents an experimental study on the influence of alkaline environments on natural fibers of plant and mineral origin in concretes. The durability of concrete-based composite materials is influenced by the properties of the reinforcing fiber, and the serviceability of concrete is dependent on its durability. The aim of the present study is to investigate the strength, weight loss %, and surface degradation of jute, sugarcane, coconut, sisal, as well as basalt fibers through an accelerated aging method when used as reinforcements in concrete. The samples were immersed in an alkaline
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16

Osburg, Andrea, Alexander Gypser, and Martin Ulrich. "Development of Polymer Concrete with Non-Standardised Fillers for Innovative Building Materials." Advanced Materials Research 1129 (November 2015): 484–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1129.484.

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The use of polymer concrete in building construction is a relatively new application. A building block system (Modular Assembly System: MAS-System) and the mobile fabrication technology for the reversible construction of buildings with regionally available aggregates, were developed in a project of applied research. The aspects of the successful material development are described, especially with regard to the characterisation of both the binders and the polymer concretes, considering strength and durability. The polymer concrete consists approximately of 90 % fillers, 10 % polymer binder and
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17

Ding, Yuqing, and Shahzma Jaffer. "DEVELOPMENT OF FINITE ELEMENT MODELS FOR THE STUDY OF AGEING EFFECTS IN CANDU 6 CONCRETE CONTAINMENT BUILDINGS." CNL Nuclear Review 5, no. 1 (2016): 37–48. http://dx.doi.org/10.12943/cnr.2015.00060.

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In nuclear power plants (NPPs), concrete containment buildings (CCBs) provide the final physical barrier against the release of radioactive materials into the environment and protect the nuclear structures housed within the containment building. CCBs have to be maintained to ensure leak tightness and sound structural integrity for the safe operation throughout the life of NPPs. However, the integrity of CCBs may be affected by the ageing of its concrete, post-tensioning cables and reinforcing bars (rebars). Finite element models (FEMs) of CANDU 6 CCBs have been developed using 2 independent fi
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18

Josserand, Laurent, Olivier Coussy, and François de Larrard. "Bleeding of concrete as an ageing consolidation process." Cement and Concrete Research 36, no. 9 (2006): 1603–8. http://dx.doi.org/10.1016/j.cemconres.2004.10.006.

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19

Gu, Chongshi, Xinran Cui, Hao Gu, and Meng Yang. "A New Hybrid Monitoring Model for Displacement of the Concrete Dam." Sustainability 15, no. 12 (2023): 9609. http://dx.doi.org/10.3390/su15129609.

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For the structural health diagnostic of concrete dams, the mathematical monitoring model based on the measured deformation values is of great significance. The main purpose of this paper is to reconstruct the ageing component and the temperature component in the traditional Hydraulic-Seasonal-Time (HST) hybrid model by combining the measured values. On the one hand, a better mathematical model for the ageing displacement of concrete dams is proposed combined with the Burgers model to separate the instantaneous elastic hydraulic deformation and the hysteretic hydraulic deformation, and then it
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20

Alj, Ismail, Marc Quiertant, Aghiad Khadour, Quentin Grando, and Karim Benzarti. "Environmental Durability of an Optical Fiber Cable Intended for Distributed Strain Measurements in Concrete Structures." Sensors 22, no. 1 (2021): 141. http://dx.doi.org/10.3390/s22010141.

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The present study investigates the environmental durability of a distributed optical fiber sensing (DOFS) cable on the market, commonly used for distributed strain measurements in reinforced concrete structures. An extensive experimental program was conducted on different types of specimens (including samples of bare DOFS cable and plain concrete specimens instrumented with this DOFS cable) that were exposed to accelerated and natural ageing (NA) conditions for different periods of up to 18 months. The instrumentation of both concrete specimens consisted of DOFS cables embedded at the center o
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21

Mumenya, S. W., R. B. Tait, and M. G. Alexander. "Mechanical behaviour of Textile Concrete under accelerated ageing conditions." Cement and Concrete Composites 32, no. 8 (2010): 580–88. http://dx.doi.org/10.1016/j.cemconcomp.2010.07.007.

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22

Momtahan, A., R. P. Dhakal, and A. Rieder. "Effects of strain-ageing on New Zealand reinforcing steel bars." Bulletin of the New Zealand Society for Earthquake Engineering 42, no. 3 (2009): 179–86. http://dx.doi.org/10.5459/bnzsee.42.3.179-186.

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Modern seismic design codes, which are based on capacity design concepts, allow formation of plastic hinges in specified locations of a structure. This requires reliable estimation of strength of different components so that the desired hierarchy of strength of the structural components can be ensured to guarantee the formation of plastic hinges in the ductile elements. As strength of longitudinal reinforcing bars governs the strength of reinforced concrete members, strain-ageing, which has significant effect on the strength of reinforcing bars, should be given due consideration in capacity de
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23

Tang, Ning, Kaikai Yang, Wenhao Pan, Limei Wu, Qing Wang, and Yanwen Chen. "Displacement Investigation of KNN-Bitumen-Based Piezoceramics in Asphalt Concrete." Advances in Materials Science and Engineering 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/1924753.

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Piezoelectric material has excellent characteristics of electromechanical coupling so that it could be widely applied in structural health monitoring field. Nondestructive testing of piezoelectric technique becomes a research focus on piezoelectric field. Asphalt concrete produces cumulative damage under the multiple repeated vehicle load and natural situation, so it is suited material and structure for nondestructive application. In this study, a test system was established by driving power of piezoceramic, laser displacement sensor, computer, and piezo-embedded asphalt concrete. Displacement
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24

Torres, Pablo Peña, Elhem Ghorbel, and George Wardeh. "Towards a New Analytical Creep Model for Cement-Based Concrete Using Design Standards Approach." Buildings 11, no. 4 (2021): 155. http://dx.doi.org/10.3390/buildings11040155.

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Creep properties are determined in design standards by measuring the creep coefficient, noted φ, as a function of time, t, and the age of the concrete at loading, t0. The work aims to study the validity of the analytical models proposed in the most used international standards and to check the possibility of their extension to estimate the creep of recycled aggregates concrete (RAC). A database was built from experimental results available in bibliographic references including 121 creep curves divided into 73 curves for natural aggregates concrete (NAC) and 48 curves for RAC. The comparison be
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25

Lucquiaud, V., L. Courard, O. Gérard, et al. "Evaluation of the Durability of Hydrophobic Treatments on Concrete Architectural Heritage." Restoration of Buildings and Monuments 20, no. 6 (2014): 395–404. http://dx.doi.org/10.1515/rbm14.20.6-0038.

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Abstract The protection of historical concrete structures is a challenge for the coming years. Hydrophobic treatment may reduce the deterioration process while providing protection against water penetration. Existing commercial products - mainly silane or siloxane in either water or solvent based formulations - were submitted to different ageing processes including UV radiation, dry-wet cycles, thermal shocks, freeze-thaw cycles, carbonation and their effectiveness has been evaluated on the basis of contact angle, vapour and chloride permeability and, capillarity water absorption. The results
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26

Zvolánek, Lukáš, and Ivailo Terzijski. "Methods Considering the Concrete Creep due to Shrinkage." Solid State Phenomena 259 (May 2017): 3–8. http://dx.doi.org/10.4028/www.scientific.net/ssp.259.3.

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Creep of concrete is a phenomenon that is not only significant in the long term, but also at young concrete. The paper deals with methods considering the tensile creep of concrete due to shrinkage. It was proved, that the tensile creep can be taken into account by simplified methods called Age-adjusted Effective Modulus Method with the ageing coefficient χvalue falling between 0.4 and 0.45. Calculated values were experimentally verified by means of Ring-test.
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27

Sarsam, Saad Issa, and Nuha Mashaan. "Detecting the Influence of Additives on Asphalt Concrete Durability." Jurnal Kejuruteraan 34, no. 1 (2022): 51–58. http://dx.doi.org/10.17576/jkukm-2022-34(1)-05.

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Modification of asphalt cement with additives is a sustainable issue. An attempt was made in the present assessment to detect the influence of modification of the asphalt binder by 2 % silica fumes and 4 % fly ash additives on the durability in terms of fatigue life of asphalt concrete mixture under short-term and long-term ageing processes and moisture damage. Asphalt concrete slab samples of wearing course was prepared and compacted by roller. The beam specimens of 400 mm length and 50 mm height and 63 mm width were extracted from the slab samples. The beam specimens had practiced the four-p
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28

Randl, Norbert. "Innovative approaches for strengthening existing concrete structures." MATEC Web of Conferences 323 (2020): 01020. http://dx.doi.org/10.1051/matecconf/202032301020.

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The demand of effective and low-invasive methods for strengthening existing concrete structures is continuously increasing due to the ageing infrastructure. High performance materials can beneficially be applied to provide sustainable and robust strengthening solutions. The present article presents some exemplarily selected methods and innovative approaches for subsequent strengthening of existing RC structures. Main results of experimental investigations are summarized and future research topics identified.
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29

Zvolánek, Lukáš, and Ivailo Terzijski. "Relaxation of Structural Concrete due to its Shrinkage in Terms of Age-Adjusted Effective Modulus Method." Key Engineering Materials 737 (June 2017): 471–76. http://dx.doi.org/10.4028/www.scientific.net/kem.737.471.

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This paper focuses on the calculation of residual stresses due to shrinkage with a tensile creep effect. Whereas the shrinkage of concrete causes stresses in the material, the tensile creep counteracts the shrinkage as a stress relaxation mechanism. The main objective of this paper is to evaluate the ageing coefficient c (referred to as Trost-Bazant Coefficient) reflecting the load history. The coefficient is used for the residual stress analysis by means of a simplified method called Age-adjusted Effective Modulus Method. The tensile creep effect was evaluated according to the rheological mod
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30

Sarsam, Saad Issa. "Monitoring the Durability Issues of Asphalt Concrete Mixtures." October 2023 4, no. 4 (2023): 1–5. http://dx.doi.org/10.36937/cebel.2023.1804.

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The asphalt concrete mixture is prone to environmental issues such as moisture damage and ageing. This may exhibit a great significance in the service performance of asphalt concrete pavement mixtures which may be more susceptible to many types of early distresses throughout its fatigue life. In the present investigation, asphalt concrete mixtures were prepared and compacted with the aid of laboratory roller compaction into a slab samples. optimum binder content was implemented. Extra samples were prepared at higher and lower binder content of 0.5 % (above and below the optimum). Asphalt concr
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31

Mohammed, Abdullahi Ali, Ramadhansyah Putra Jaya, Étienne Joseph Marie Delbrel, et al. "Stiffness Modulus of Asphaltic Concrete Incorporating Coir Fibre and Subjected to Aging." E3S Web of Conferences 65 (2018): 02003. http://dx.doi.org/10.1051/e3sconf/20186502003.

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The aim of this paper is to investigate the performance response of a set of coir fibre modified asphalt samples subjected different ageing conditions and containing three different fibre contents. The laboratory experimental programs are indirect tensile test at 25°C and repeated load axial test at 40°C. The results showed that the fibres improved the mixture’s performance. The main findings obtained at 25°C for short and long-term ageing reveal that low fibre content at around 0.3% per aggregate weight display a stiffness modulus up to 14% higher than that of unmodified mixtures, hence showi
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32

McGovern, M. E., B. Behnia, W. G. Buttlar, and H. Reis. "Concrete Testing: Characterisation of oxidative ageing in asphalt concrete – Part 2: Estimation of complex moduli." Insight - Non-Destructive Testing and Condition Monitoring 55, no. 11 (2013): 605–9. http://dx.doi.org/10.1784/insi.2012.55.11.605.

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33

Abdulrazeg, Aeid Ali, Jamaloddin Noorzaei, Mohamed Saleh Jaafar, Parvin Khanehzaei, and Thamer Ahmed Mohamed. "THERMAL AND STRUCTURAL ANALYSIS OF RCC DOUBLE-CURVATURE ARCH DAM." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 20, no. 3 (2014): 434–55. http://dx.doi.org/10.3846/13923730.2013.801897.

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This paper focuses on the development, verification and application of a three-dimensional finite element code for coupled thermal and structural analysis of roller compacted concrete arch dams. The Karun III Arch dam located on Karun River, Iran, which was originally designed as a conventional concrete arch dam, has been taken for the purpose of verification of the finite element code. In this study, RCC technology has been ascertained as an alternative method to reduce the cost of the project and make it competitive. A numerical procedure to simulate the construction process of RCC arch dams
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34

Okajima, Tatsuo, Shinji Kawabe, Yosuke Hayashi, and Taizo Mizutani. "The Surface Finish Evaluation of Concrete Buildings Effected by Ageing." Concrete Research and Technology 9, no. 1 (1998): 63–70. http://dx.doi.org/10.3151/crt1990.9.1_63.

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35

Mamand, H., J. Chen, and S. J. Barnett. "Experimental and modelling investigation of mechanical behaviour of ageing concrete." Construction and Building Materials 155 (November 2017): 1138–46. http://dx.doi.org/10.1016/j.conbuildmat.2017.08.123.

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36

Bilcik, Juraj, Vladimir Benko, and Ludovít Fillo. "Ageing of Concrete Containers for the Disposal of Nuclear Waste." IABSE Symposium Report 86, no. 6 (2002): 92–99. http://dx.doi.org/10.2749/222137802796337080.

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37

Aniskin, Nikolai, Alexey Shaytanov, and Mikhail Shaytanov. "Geosynthetic liner: A modern solution for a concrete dam constructed from particularly lean roller-compacted concrete." E3S Web of Conferences 410 (2023): 05013. http://dx.doi.org/10.1051/e3sconf/202341005013.

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This paper discusses the issue of seepage control in gravity dams made of compacted lean concrete. Several possible design options are outlined. The benefits of using geocomposite impervious blankets are explained. A description of different types of geocomposites is given, including their composition and component parameters. Basic properties of geosynthetics are discussed, along with methods for defining them, such as water permeability, tensile strength, puncture resistance, and ageing. Finally, the main areas for future research are formulated, although it may be helpful to provide more de
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Hsino, Mahmoud, and Jerzy Pasławski. "Phase Change Materials as a Modifier of Ageing Cement Concrete in Hot and Dry Climate." Advanced Materials Research 804 (September 2013): 129–34. http://dx.doi.org/10.4028/www.scientific.net/amr.804.129.

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This paper is devoted to the use of Phase Change Materials as a cement concrete modifier in Middle East climate. Due to large amplitude of daily air temperature in these conditions, Phase Change Materials can be used to reduce the dynamic of thermal peak in an ageing concrete. Partial results of studies to determine the influence of various factors on the effects of modifications are presented
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39

Zhang, Jin Yang. "The Tests and Measures of Concrete Ageing and Steel Bar Corrosion of the Salt Free Contaminated Inland Waterlocks." Applied Mechanics and Materials 71-78 (July 2011): 4525–32. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4525.

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There are mainly three phenomena, i.e. cracks, infiltration and denuding for judging the aging and defects from hydraulic concrete constructions. The inland waterlocks’ concrete ageing with salt free contamination are found basically the concrete denuding, rebar erosive expansion cracks and concrete surface gravel exposure and freeze thawing peeling-off as well occasionally. The severe aging phenomena always occur in some small structures in work bridges, sub work bridges, railway bridges and concrete waterlocks etc, especially in boundary beams or flange plates of the said beams. The result m
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40

Alma’aitah, Mohammad, Bahman Ghiassi, and Ali Dalalbashi. "Durability of Textile Reinforced Concrete: Existing Knowledge and Current Gaps." Applied Sciences 11, no. 6 (2021): 2771. http://dx.doi.org/10.3390/app11062771.

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This paper aims to provide a review of the current literature on the durability of textile-reinforced concrete and mortar (TRC/TRM) composites. Most previous studies have focused on the role of chemical attacks, freeze-thaw conditions, and high temperatures on the mechanical performance of these composites. Information on the long-term performance of TRCs under synergistic action of mechanical and environmental loads is scarce. Considering the variety of fabrics and matrices used for the production of TRC composites, the existing data are still very limited and comprehensive studies are needed
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41

Asphaug, Silje Kathrin, Berit Time, and Tore Kvande. "Moisture Accumulation in Building Façades Exposed to Accelerated Artificial Climatic Ageing—A Complementary Analysis to NT Build 495." Buildings 11, no. 12 (2021): 568. http://dx.doi.org/10.3390/buildings11120568.

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Building façades must endure severe climatic exposure throughout their lifetimes. To prevent damage and expensive repairs, ageing tests are used in durability assessments. The NT Build 495 describes an artificial ageing procedure to address building material and component resistance to ultraviolet (UV) light, heat, water, and frost using a climate simulator. The test has been used for decades to investigate exterior surface materials and façade products but has only recently been adopted for multi-layered systems. This study investigates moisture accumulation in a façade system for retrofittin
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42

Xiao, Li Ying. "A Review of Detection, Evaluation and Repair Technology for Hydraulic Concrete Structures." Advanced Materials Research 690-693 (May 2013): 805–10. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.805.

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This paper provides a review of the progress in America, Europe, Japan and china withnumerous standardizations and investigations for the protection and repair of hydraulic concrete structures.These researches include detection technologies, evaluation methods, applications of newconcrete reinforcing and repair materials. This paper identifies the significant progress made by theInternational Commission on Large Dams(ICOLD).At the same time, some specific investigations are carried out on the ageing of hydraulic concrete structures in china. On this basis, the detection, assessment and remedia
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43

Angst, Ueli M., Yurena Seguí Femenias, and Fabrizio Moro. "The role of durability monitoring in taking infrastructure maintenance to the level of industry 4.0." ce/papers 6, no. 5 (2023): 1014–18. http://dx.doi.org/10.1002/cepa.2066.

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AbstractOver the last years, significant advances were made with respect to sensors, data logging, data communication, and algorithm‐based data analysis. These developments have the potential to take structural health monitoring, especially structural corrosion health monitoring, to the next level. This contribution focuses on corrosion and durability monitoring of reinforced concrete structures. It is discussed how monitoring can play an important role in the diagnosis of the condition of a structure, as well as in predicting the future evolution of material's ageing and related deterioration
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Ross, Charlotte. "Imagined communities: initiatives around LGBTQ ageing in Italy." Modern Italy 17, no. 4 (2012): 449–64. http://dx.doi.org/10.1080/13532944.2012.706997.

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LGBTQ ageing is an under-researched but vital issue, given the cultural invisibility of older LGBTQ individuals and Italy's ageing population. This article explores initiatives around LGBTQ ageing, considered in relation to the hypothesis that LGBTQ populations may develop effective strategies for ‘successful ageing’, by establishing queer cultural spaces and support networks. After a brief contextualisation of key issues the author focuses on a case study of a lesbian community in Bari which is planning a residential arrangement for ‘older lesbians’. Drawing on interviews conducted in January
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Arel, Hasan Şahan, Ertug Aydin, and Sudarshan D. Kore. "Ageing management and life extension of concrete in nuclear power plants." Powder Technology 321 (November 2017): 390–408. http://dx.doi.org/10.1016/j.powtec.2017.08.053.

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Peach, B., M. Petkovski, J. Blackburn, and D. L. Engelberg. "The effect of ageing and drying on laser scabbling of concrete." Construction and Building Materials 188 (November 2018): 1035–44. http://dx.doi.org/10.1016/j.conbuildmat.2018.08.131.

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Purnell, P., and J. Beddows. "Durability and simulated ageing of new matrix glass fibre reinforced concrete." Cement and Concrete Composites 27, no. 9-10 (2005): 875–84. http://dx.doi.org/10.1016/j.cemconcomp.2005.04.002.

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Szymanik, Barbara, Sam Ang Keo, Franck Brachelet, and Didier Defer. "Investigation of Carbon Fiber Reinforced Polymer Concrete Reinforcement Ageing Using Microwave Infrared Thermography Method." Applied Sciences 14, no. 10 (2024): 4331. http://dx.doi.org/10.3390/app14104331.

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This study presents the utilization of the microwave infrared thermography (MIRT) technique to identify and analyze the defects in the carbon-fiber-reinforced polymer (CFRP) composite reinforcement of concrete specimens. At first, a set of numerical models was created, comprising the broadband pyramidal horn antenna and the analyzed specimen. The utilization of the system operating at a power of 1000 W in a continuous mode, operating at frequency of 2.45 GHz, was analyzed. The specimen under examination comprised a compact concrete slab that was covered with an adhesive layer and, thereafter,
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Francke, Barbara, and Artur Piekarczuk. "Experimental Investigation of Adhesion Failure between Waterproof Coatings and Terrace Tiles under Usage Loads." Buildings 10, no. 3 (2020): 59. http://dx.doi.org/10.3390/buildings10030059.

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This paper analyses the mechanism of the loss of functional properties of water-impermeable products used under ceramic tiles bonded with adhesives. Recorded damages were caused by selected ageing factors and were measured by the loss of adhesion of individual layers of the set. The analyzed phenomenon is found mainly on terraces and balconies located in a mid-European transitional climate, i.e., exposed to temperatures passing through 0 °C for three seasons a year. The tests reflected the action of three main functional factors, i.e., temperatures, water and freeze/thaw cycles. Tested waterpr
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Misák, Petr, Dalibor Kocáb, and Petr Cikrle. "Determination of a Suitable Moment for Formwork Removal from a Concrete Structure Using Rebound Hammer Test Methods." Solid State Phenomena 322 (August 9, 2021): 23–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.322.23.

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Determining the compressive strength of concrete in the early stages of ageing has been an increasingly relevant topic in recent years, particularly with regard to the safe removal of formwork from a structure or its part. The compressive strength of concrete which designates safe removal of formwork without damaging the structure can be referred to as "stripping strength". It is undoubtedly beneficial to be able to determine the moment of safe formwork removal in a non-destructive manner, i.e. without compromising the structure. Modern rebound hammer test methods seem to be a suitable instrum
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