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Topics In Concrete
Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 10 Abstracts search results
Document:
22-179
Date:
March 1, 2024
Author(s):
Egor Ivaniuk and Viktor Mechtcherine
Publication:
Structural Journal
Volume:
121
Issue:
2
Abstract:
Despite all the recent advances in the development of threedimensional (3-D) concrete printing (3DCP), this technology still has many unresolved problems. In most of the completed projects with the application of 3DCP, the focus was mainly on mastering the printing of vertical walls, while horizontal structural elements were produced with conventional methods—that is, using formwork, which reduces the level of technology automation, or using prefabricated elements, which makes the construction dependent on their availability and supply. In this contribution, the authors propose new methods of manufacturing slabs and beams directly on site by extruding concrete onto a textile reinforcement mesh laid on a flat surface. Specimens obtained from a slab produced following this method were used for mechanical testing and investigation of the concrete-reinforcement interface zone. Finally, as proof of the feasibility of the proposed approach, a demonstrator representing a full-scale door lintel was manufactured.
DOI:
10.14359/51739158
21-290
September 1, 2022
Alein J S and M. Bhuvaneshwari
119
5
Sandwich panels are commonly used in the construction industry as wall panels due to their quick and easy construction, light weight, and thermal and insulation characteristics. Sandwich composite panels using textile reinforcement are in the developing stage and further work is required to be carried out in this field. Thin sandwich panels can be manufactured using textile reinforcement, which is of lighter weight and gives better structural performance. This paper first reviews the different core materials that can be used in manufacturing of sandwich panels with this manufacturing technique adopted. Next, it critically reviews the work done thus far regarding textile-reinforced sandwich panels, and their performance evaluated by researchers is presented with a statistical study performed. The practical applications are also discussed with the future scope. In general, this paper presents a clear view on textile-reinforced sandwich panels with their advantages.
10.14359/51734899
20-289
July 1, 2021
Edoardo Rossi, Norbert Randl, Tamás Mészöly, and Peter Harsányi
118
4
The use of textile-reinforced concrete (TRC) in retrofit applications has proven to be an effective and viable solution. Many parameters, however, can affect the outcome, strongly inhibiting its potential. An experimental campaign was performed to assess the efficiency of TRC in strengthening reinforced concrete (RC) beams against bending with different varying parameters such as cementitious materials, number of textile layers, mechanical anchorages, and addition of short dispersed steel fibers. Results show how each parameter affects both the capacity increase and the failure mode, pointing out the beneficial effect of introducing both anchorage systems and short dispersed steel fibers.
10.14359/51732647
16-140
March 1, 2018
Shi-ping Yin, Yao Li, Zhe-yu Jin, and Peng-hao Li
Materials Journal
115
Textile-reinforced concrete (TRC), which has superior crack- and corrosion-resistance capacity, is a type of available inorganic repairing material. However, TRC is still undefined in terms of its interfacial performance between it and existing concrete under marine erosion environments. In this paper, a double-side shear test was used to study the effect of TRC precracking, concrete strength, interface form, short-cut fiber, and freezing-and-thawing cycle number on the interfacial bond properties between TRC and existing concrete under chloride salt erosion and freezing-and-thawing cycles. The results indicate that the shear capacity can be improved by increasing the concrete strength, roughening the reinforced interface, and adding short-cut fibers into the TRC. In addition to that, proper precracking in TRC can also improve the interfacial properties; however, increasing the precracking of TRC to a certain extent will decrease the interfacial properties. In addition, as freezing-and-thawing cycles increase, interfacial properties between TRC and existing concrete will decrease, obviously without serious deterioration in the TRC layer. Therefore, TRC has the potential application of repairing and enhancing existing concrete structures under a harsh freezing-and-thawing environment.
10.14359/51701919
108-M12
January 1, 2011
Bong-Gu Kang, Joachim Hannawald, and Wolfgang Brameshuber
108
1
To analyze the damage and failure mechanisms of a multifilament yarn embedded in concrete during a pullout test, an acoustic emission analysis was carried out for the identification and localization of filament ruptures. The different damage mechanisms (filament rupture, filament debonding, and concrete microcracking) causing acoustic emission were first characterized for separation. Tests were carried out to generate isolated signals, which were studied using signal and frequency analysis. A high localization accuracy of the filament ruptures in the yarn pullout test could be achieved, and the damage progress of the yarn during the pullout test could be analyzed in detail.
10.14359/51664221
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