Evaluation of Corrosion Protection for Internal Prestressing Tendons in Precast Segmental Bridges

West, Jeffrey S.; Breen, J E; Vignos, R P

doi:10.15554/pcij.09012002.76.91

Cited by 6 publications

(44 citation statements)

References 2 publications

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“…low corrosion resistance) of existing materials (e.g. steel) (West et al , 2002). Meanwhile, insulating material such as the ceramic can be used to cover prefabricated external wall, thereby improving the thermal insulation (Franzoni et al , 2016).…”

Section: Resultsmentioning

confidence: 99%

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Luo

Xue

Tan

et al. 2020

ECAM

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PurposeThis paper aimed to introduce a systematic body of knowledge via a scientometric review, guiding the sustainable transition from conventional construction to prefabricated construction. The construction industry currently faces a challenge to balance sustainable development and the construction of new buildings. In this context, one of the most recent debates is prefabricated construction. As an emerging construction approach, although existing knowledge makes contributions to the implementation of prefabricated construction, there is a lack of a comprehensive and in-depth overview of the critical knowledge themes and gaps.Design/methodology/approachThis study uses the scientometric analysis to review the state-of-the-art knowledge of prefabricated construction. It retrieved data from the Web of Science core collection database. CiteSpace software was used to conduct the analysis and visualization; three analysis methods identify the knowledge hotspots, knowledge domains and knowledge topics. Finally, according to integrating the hidden connections among results, a body of knowledge for prefabricated construction application can be inferred.FindingsThe results show that 120 knowledge hotspots, five critical knowledge domains and five prominent knowledge topics are vital for promoting implementation of prefabricated construction. Based on the afore analysis, a body of knowledge for prefabricated construction that can systematically cover a broad knowledge of prefabricated construction-related research and activities are integrated and proposed in this paper.Originality/valueBody of knowledge systematically covers a broad knowledge of prefabricated construction applications and is vital to guide researchers and practitioners to conduct related research and activities, thereby promoting the sustainable transition to prefabricated construction implementation.

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Section: Resultsmentioning

confidence: 99%

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Luo

Xue

Tan

et al. 2020

ECAM

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“…West et al [29] developed the corresponding rating and marking standards of prestressed steel wire, low carbon rebar, and tubes, respectively, in the research on corrosion resistance of bonded rebar in precast construction, which provided a standard for guiding evaluation on the corrosion degree.…”

Section: Specification For Qualitative Rating Of the Corrosionmentioning

confidence: 99%

Corrosion Investigation of Rock Anchors Served over 10 Years in Underground Powerhouse of a Hydropower Station

Yin

Sun

Wang

et al. 2022

Advances in Materials Science and Engineering

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With the wide application of prestressed anchors in high slopes, underground structures, and bridge projects, the corrosion problems of the anchor structure during the long-term service have demanded more attention. Because of the environmental impact and structural characteristics, anchor cable corrosion is almost inevitable. To obtain the corrosion status of the anchors that have served over 10 years in the underground chambers of a power station, a field investigation was performed. The environment aggressivity was evaluated, and the anchor corrosion was inspected during the investigation. The results show that the effect of groundwater and stray current on anchor corrosion is slight. The main cause of the severe corrosion of the anchor heads is the high temperature and humidity in the chamber. To better evaluate the corrosion tendency and corrosion degree of the anchor head, a corrosion rating method was proposed based on the principles of existing investigation methods and the actual corrosion situation of anchors observed on-site. It was proved that the rating method can effectively reflect the corrosion characteristics and determine the areas prone to corrosion. This field investigation suggests that a regularly scheduled investigation is of great significance and meaning for accurately obtaining the corrosion status, assessing the failure risk, and issuing an early warning.

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“…Special thanks go to the highly qualified graduate students who were co-authors in Refs. [4][5][6][7][8][9][10].…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…• The long-term macrocell corrosion test series was initiated in 1993 to investigate corrosion protection for post-tensioning tendons in precast concrete segmental construction. After four and a half years of exposure testing, half of the macrocell laboratory specimens underwent internal examination [5]. The remaining specimens underwent internal examination after eight years of exposure testing [6].…”

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confidence: 99%

Techniques for Improving Durability of Post-Tensioned Concrete Bridges

Breen

2012

Arab J Sci Eng

Self Cite

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This paper summarizes a 16-year comprehensive research program carried out at The University of Texas at Austin to identify durability concerns with post-tensioning systems in bridges and to develop durability design guidelines. Major experimental programs examined high performance grouts, segmental joint macrocells, long-term large beam corrosion and long-term column corrosion. After performing comprehensive internal examinations, overall findings indicate unfavorable durability effects due to the use of mixed reinforcement, thin concrete cover, galvanized steel ducts, grout voids and galvanized duct splices. The width of cracks was shown to have a direct adverse effect on specimen performance, and local areas of severe corrosion were found on epoxy-coated and galvanized strands. Favorable behavior was observed, however, for specimens constructed with high-performance concrete, high post-tensioning levels, plastic ducts, and sound, epoxy-filled joints.

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Evaluation of Corrosion Protection for Internal Prestressing Tendons in Precast Segmental Bridges

Cited by 6 publications

References 2 publications

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Corrosion Investigation of Rock Anchors Served over 10 Years in Underground Powerhouse of a Hydropower Station

Techniques for Improving Durability of Post-Tensioned Concrete Bridges

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