Load–bearing behaviour and simulation of textile reinforced concrete

In the context of the application of carbon Textile Reinforced Concrete (TRC) layers for the durable repair of building surfaces, uniaxial tensile tests on rectangular TRC samples were carried out to compare the bond and load-bearing behavior of an epoxy-impregnated carbon textile and its surface modified version. The aim of the surface modification, consisting of a subsequent coating with epoxy resin and sanding with quartz sand, is the improvement of the composite material regarding crack width reduction and an increase of the load-bearing capacity. A total of 15 series were examined and the parameters: reinforcement type, orientation and ratio were varied. In addition, long-term load tests were conducted. An optical 3D-video measuring system in combination with a DIC-software was used, which allowed the analysis of the process of crack formation during the entire testing time. With the surface modified reinforcement the formation of approx. 1.5 times the number of cracks with averagely 33 % smaller crack widths and up to 50 % smaller crack spacings were observed, regardless of the ratio of reinforcement. The residual behaviour of the series subjected to a permanent load of 1500 MPa over 1000 h showed no reduction of the tensile stress compared to short-term tests.

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Realization of TRC Façades with Impregnated AR-Glass Textiles

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.466.121 ◽

2011 ◽

Vol 466 ◽

pp. 121-130 ◽

Cited By ~ 14

Author(s):

Josef Hegger ◽

Christian Kulas ◽

Michael Horstmann

Keyword(s):

Composite Material ◽

Reinforced Concrete ◽

Production Process ◽

Design Code ◽

Textile Reinforced Concrete ◽

Load Bearing ◽

Steel Reinforced Concrete ◽

Technical Textiles ◽

Metallic Reinforcement ◽

Bearing Behavior

In the last 30 years, façade-panels made of steel-reinforced concrete have become less attractive for architects and clients. Due to the metallic reinforcement, the insufficient concrete covers of former design code generations and hence the material-dependent corrosion, many cases of damage occurred. Using technical textiles for a new composite material, Textile Reinforced Concrete (TRC), it is possible to produce concrete structures which are not vulnerable to corrosion. The presented ventilated large-sized façade elements and self-supporting sandwich panels exemplify the capability of TRC. In the paper, applied materials are characterized and the production process of tailor-made textile reinforcements as well as the load-bearing behavior of the members is described.

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Flexural Performance of Prefabricated Ultra-High-Strength Textile Reinforced Concrete (UHSTRC): An Experimental and Analytical Investigation

Buildings ◽

10.3390/buildings10040068 ◽

2020 ◽

Vol 10 (4) ◽

pp. 68

Author(s):

Egodawaththa Ralalage Kanishka Chandrathilaka ◽

Shanaka Kristombu Baduge ◽

Priyan Mendis ◽

Petikirige Sadeep Madhushan Thilakarathna

Keyword(s):

Reinforced Concrete ◽

High Performance ◽

High Strength ◽

Analytical Investigation ◽

Experimental Program ◽

Textile Reinforced Concrete ◽

Load Bearing ◽

Mesh Density ◽

Potential Improvement ◽

Analytical Program

Textile Reinforced Concrete (TRC) is a prefabricated novel lightweight high-performance composite material that can be used as a load-bearing or non-load-bearing component of prefabricated buildings. Making TRC with Ultra-High-Strength Concrete (UHSC) (≥100 MPa) can be considered as a potential improvement method to further enhance its properties. This paper investigated the performance of Ultra-High-Strength Textile Reinforced Concrete (UHSTRC) under flexural loading. A detailed experimental program was conducted to investigate the behavior of UHSC on TRC. In the experimental program, a sudden drop in load was observed when the first crack appeared in the UHSTRC. A detailed analytical program was developed to describe and understand such behavior of UHSTRC found in experiments. The analytical program was found to be in good agreement with the experimental results and it was used to carry out an extensive parametric study covering the effects of the number of textile layers, textile material, textile mesh density, and UHSTRC thickness on the performance of UHSTRC. Using a high number of textile layers in thin UHSTRC was found to be more effective than using high-thickness UHSTRC. The high modulus textile layers effectively increase the performance of UHSTRC.

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Structural performance of textile reinforced concrete sandwich panels under axial and transverse load

REVIEWS ON ADVANCED MATERIALS SCIENCE ◽

10.1515/rams-2021-0015 ◽

2021 ◽

Vol 60 (1) ◽

pp. 64-79

Author(s):

Junqing Hong ◽

Shaofeng Zhang ◽

Hai Fang ◽

Xunqian Xu ◽

Honglei Xie ◽

...

Keyword(s):

Reinforced Concrete ◽

Bearing Capacity ◽

Failure Modes ◽

Ultimate Load ◽

Wire Mesh ◽

Transverse Load ◽

Composite Panels ◽

Textile Reinforced Concrete ◽

Load Bearing Capacity ◽

Load Bearing

Abstract The performance of textile reinforced concrete composite panels (TRCCPs) under the action of pseudo-static load up to collapse was evaluated. The test of TRCCPs under axial and transverse loading was conducted, and the results were compared with those for steel wire mesh reinforced-concrete composite panels (SMRCCPs). Ceram-site concrete was utilized as the panel matrix owing to its lightweight and insulation characteristics. The ultimate load bearing capacity, load-deformation and load-strain relationships, and failure modes were discussed and investigated in comparison with the findings of non-linear finite-element-model (FEM) analysis and the analytic method on the basis of the reinforced concrete (RC) theory. The analysis results indicate that TRCCP is suitable for use as a potential structural member for a wall or slab system of buildings, and the typical RC theory can be applied to predict the ultimate load bearing capacity if modified suitably.

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