Long-term field performance of a composite pipe repair under constant hydrostatic pressure

A deep-corrugated metal box culvert structure was instrumented with strain gages and tape extensometer reference points in the field. Performance was monitored during backfilling and, paving and under static loads shortly after completion of installation. Beyond the initial study, deflection readings were taken periodically for 3 years. Also, the static load test was conducted during the second and third years to examine changes in structural responses over time. The results of the study showed that the culvert deflection stabilized within the 3 year period. The overall deflection recorded during the construction phases was about 2 cm, and the additional deflection of about 0.8 cm took place during the long-term study period. The deflection, moment, and thrust responses of the culvert under static loads improved over time. This was considered to be because of backfill soil densification under repeated traffic loads. Key words : long-term field performance, culvert, box type, deep corrugation, deflection, live loads.

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Long-term Field Performance of Concrete Produced with Powder Waste Glass as Partial Replacement of Cement

Case Studies in Construction Materials ◽

10.1016/j.cscm.2021.e00745 ◽

2021 ◽

pp. e00745

Author(s):

Roz-Ud-Din Nassar ◽

Parviz Soroushian ◽

Muhammad Sufyan-Ud-Din

Keyword(s):

Field Performance ◽

Waste Glass ◽

Partial Replacement ◽

Term Field

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Energy Efficient Wireless Sink Node for Monitoring of Snow Environment

Turkish Journal of Computer and Mathematics Education (TURCOMAT) ◽

10.17762/turcomat.v12i2.1514 ◽

2021 ◽

Vol 12 (2) ◽

pp. 1775-1785

Author(s):

Rajesh Kumar Garg, Et. al.

Keyword(s):

Energy Efficient ◽

Snow Depth ◽

Field Performance ◽

Cost Effective ◽

Field Evaluation ◽

Sink Node ◽

Depth Sensor ◽

Power Module ◽

Term Field

Conventionally, sink node is considered to have large hardware and energy resources; however, many times sink node is working in same conditions as source nodes, especially when deployed for monitoring of the snow environment. In this paper, an effort has been made to practically realize a sink node which is energy efficient and cost effective for monitoring applications. To save energy, the Main Power Module is designed to provide controlled powers to sensors and sub-modules. The paper discusses design aspects of the sink node and its long-term field evaluation with environmental sensors, especially the Snow Depth Sensor of MaxBotix. Field performance of Snow Depth Sensor has been enhanced by Euclidean Minimum Distance filter which improved the correlation of data to 0.997. The proposed design helps to achieve energy consumption of 42.72mWh which is significantly lower than the previous work. The reliable working of the sink node in the long-term field evaluation indicates that snow environment can be monitored at less expense of energy by employing proposed sensors and the specially designed sink node.

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Simulation and design of collector array units within large systems

10.18777/ieashc-task55-2019-0003 ◽

2019 ◽

Author(s):

Simon Furbo ◽

Weiqiang Kong ◽

Jianhua Fan

Keyword(s):

Performance Prediction ◽

Field Performance ◽

Operating Conditions ◽

Test Information ◽

Large Systems ◽

Term Field

Investigation of measured long-term field performance in relation to standardized collector test information and tools/models for annual performance prediction at different operating conditions and field designs.

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Long-Term Field Performance of Flexible Pavements Using Warm Mix Asphalt Technologies

Asphalt Paving Technology ◽

10.12783/aapt2018/33805 ◽

2020 ◽

Author(s):

SHIHUI SHEN ◽

WEIGUANG ZHANG ◽

SHENGHUA WU ◽

LOUAY MOHAMMAD ◽

BALASINGAM MUHUNTHAN

Keyword(s):

Flexible Pavements ◽

Field Performance ◽

Warm Mix Asphalt ◽

Term Field

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Corrosion Rate Evaluation and Prediction for Piles Based on Long-Term Field Performance

Journal of Geotechnical and Geoenvironmental Engineering ◽

10.1061/(asce)1090-0241(2008)134:3(341) ◽

2008 ◽

Vol 134 (3) ◽

pp. 341-351 ◽

Cited By ~ 12

Author(s):

Jeramy B. Decker ◽

Kyle M. Rollins ◽

Jared C. Ellsworth

Keyword(s):

Corrosion Rate ◽

Field Performance ◽

Rate Evaluation ◽

Term Field

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Field Performance of Foaming Warm Mix Asphalt Pavement

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198119832885 ◽

2019 ◽

Vol 2673 (3) ◽

pp. 281-294 ◽

Cited By ~ 5

Author(s):

Shenghua Wu ◽

Weiguang Zhang ◽

Shihui Shen ◽

Balasingam Muhunthan

Keyword(s):

Field Performance ◽

Warm Mix Asphalt ◽

Void Content ◽

Transverse Cracking ◽

Water Based ◽

Asphalt Content ◽

Air Void ◽

Air Void Content ◽

Term Field

Water-containing and water-based foaming warm mix asphalt (WMA) technologies have been widely used in recent years but their long-term field performance is scarcely documented. This paper summarizes the field performances of six water-containing foaming and 10 water-based foaming WMA pavements across the United States and compares them with corresponding hot mix asphalt (HMA) pavements. Two series of field distress surveys were conducted to measure wheel-path longitudinal cracking, transverse cracking, and rut depth. Field cores were extracted to measure the in-place air void content, aggregate gradation, and asphalt content. The volumetric properties and field performance of foaming WMA and HMA control pavements were evaluated. The foaming WMA pavements showed slightly higher in-place air void (i.e., lower in-place density) than the HMA pavements. It was also found that the foaming WMA pavements in general had comparable or more wheel-path longitudinal cracking than the HMA pavements. The long-term field performance of foaming WMA pavements for transverse cracking and rutting were found to be similar to control HMA pavements. The study also reinforced the importance of in-place air void and asphalt content, finding that slightly higher asphalt content and lower in-place air void content may be beneficial for long-term resistance to cracking of asphalt pavements. As a result of the findings, the optimal pavement maintenance time was estimated to be four to five years since paving for full-depth pavement projects.

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