Flexural behaviour of thin textile reinforced concrete slabs enhanced by chemical prestressing

Zdanowicz, Katarzyna; Marx, Steffen

doi:10.1016/j.engstruct.2022.113946

Cited by 16 publications

(14 citation statements)

References 19 publications

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“…23,58 Generally, expansive additive replacement ratios between 15% and 20% of cement weight are used to obtain self-prestressing concrete. 10,[57][58][59] F I G U R E 6 The relationship between the amount of alumina and free expansion at 14 days of age using type K expansive additive. 57…”

Section: Dosage Of Expansive Additivementioning

confidence: 99%

“…As a reaction, the reinforcement exerts a compressive stress on the concrete. [8][9][10] The technology in its current form was first introduced during the 1960s. [11][12][13] Furthermore, and unlike conventional prestressing, chemical prestressing does not impose any additional cost, as the cost of expansive additives are approximately similar to that of normal cement.…”

Section: Introductionmentioning

confidence: 99%

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Chemical prestressing of concrete structures; state of the art review

Dhahir,

Marx,

Zdanowicz

2023

Structural Concrete

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Chemical prestressing was developed during the 1960s; however, and due to technical difficulties at that time, the technology was not considered as an alternative to conventional prestressing; instead, it was only used as a shrinkage compensating method. Still, recent development in concrete technology encouraged several researchers to revisit this technology, where significant achievements were made. This paper aims to present a state‐of‐the‐art review about the recent development in the chemical prestressing technology. This includes reviewing existing field applications, existing types of expansive additives, influence of different expansive additives, influence of curing methods, mix proportioning, mechanical properties, and structural behavior. Furthermore, a thorough discussion was performed and suggestions were made for future researchers to help further contribute to the development of this prestressing technology. It was concluded that although the chemical prestressing technology seems very promising, more research is required before using it in practical applications.

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Section: Dosage Of Expansive Additivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemical prestressing of concrete structures; state of the art review

Dhahir,

Marx,

Zdanowicz

2023

Structural Concrete

Self Cite

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“…Therefore, a highperformance TRC material that effectively improves the mechanical properties of the member can be obtained by utilizing textile to reinforced UHPC (Hou et al 2022;Preinstorfer et al 2021). However, current research on TRCs mainly focus on the reinforcement of bending members (Halvaei et al 2020;Koutas et al 2021;Goliath et al 2021;Zdanowicz et al 2022), while few studies on corrosion resistance and mechanical behavior enhancement of TRC-confined members in chloride salt environments have been conducted. Therefore, further studies of TRC confined members under chloride salt attack should be carried out.…”

Section: Introductionmentioning

confidence: 99%

Study on the Axial Load Response of RC Columns Confined by CTRC Subjected to Dry-Wet Cycles

Zhang

Zheng

et al. 2023

ACT

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To investigate the axial load response of reinforced concrete (RC) columns confined by carbon textile-reinforced concrete (CTRC) under chloride attack, 24 CTRC-confined square columns and 12 unconfined columns were tested under axial load, while considering the influences of dry-wet cycles, textile ratios, stirrup ratios, and section sizes. The experimental results indicate that the corrosion resistance and compression performance of RC columns under chloride ion erosion were significantly improved by CTRC. The corrosion of the RC column with CTRC confinement was remarkably reduced with a maximum of 63.9% in the chloride salt environment. The maximum increments of bearing capacity and ductility of CTRC-confined columns were 30.9% and 87.7%, respectively, compared with unconfined columns. In addition, bearing capacity, ductility, and deformation energy were also affected by stirrup ratios and section sizes. Finally, the semiempirical and semi-theoretical analytical models of the stress-strain relationship and axial-bearing capacity were proposed based on the experimental data and theoretical analysis. The compound confinement effects of CTRC and corroded stirrups on core concrete was considered in the proposed models. The models correlated well with the experimental data.

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“…The wide range of application possibilities of textile-reinforced concrete/mortar are also demonstrated by numerous approvals and pilot applications, e.g., sandwich elements, pedestrian and cyclist bridges and noise barrier walls [5][6][7][8][9]. Additionally, there is the option to prestress the fibre strands and increase the cracking, as well as ultimate loads (compare [10,11]).…”

Section: Introductionmentioning

confidence: 99%

Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars

et al. 2022

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Numerous concrete monuments built in the High Modern Era (turn of the 20th century until the 1970s) must now be repaired for preservation. Traditional concrete repair according to current guidelines involves considerable material removal, changing the appearance of the existing structure. With a combination of the material properties of high-/ultra-high-performance concrete (HPC/UHPC) with its dense microstructure and corrosion-free textile reinforcement (carbon and basalt), a high-performance mortar repair system can be developed. Such a system allows for concrete repairs with minimal material loss by using very thin layers that are durable and do not change the architectural character of the repaired monument. For the investigation of the load-bearing behaviour of a structural repair system using textile-reinforced, high-performance mortar, 20 mm thick slabs were produced and mechanically characterized. In the next step, the proposed repair system was applied to 70 mm thick old concrete slabs. The results show that a high surface tensile strength of 2.9 MPa was obtained. In a further step, the system will be applied to concrete pillars of transmission tower in Berus, adapted in terms of colour and structure and installed for long-term monitoring.

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Flexural behaviour of thin textile reinforced concrete slabs enhanced by chemical prestressing

Cited by 16 publications

References 19 publications

Chemical prestressing of concrete structures; state of the art review

Chemical prestressing of concrete structures; state of the art review

Study on the Axial Load Response of RC Columns Confined by CTRC Subjected to Dry-Wet Cycles

Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars

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