scholarly journals Long-Term Field Performance of Pervious Concrete Pavement

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Aleksandra Radlińska ◽  
Andrea Welker ◽  
Kathryn Greising ◽  
Blake Campbell ◽  
David Littlewood
Keyword(s):  
Field Performance ◽  
Concrete Pavement ◽  
Pervious Concrete ◽  
Unit Weight ◽  
Freezing And Thawing ◽  
Porous Pavement ◽  
Pavement Thickness ◽  
Multiple Samples ◽  
Term Field

The work described in this paper provides an evaluation of an aged pervious concrete pavement in the Northeastern United States to provide a better understanding of the long-lasting effects of placement techniques as well as the long-term field performance of porous pavement, specifically in areas susceptible to freezing and thawing. Multiple samples were taken from the existing pavement and were examined in terms of porosity and unit weight, compressive and splitting tensile strength, and the depth and degree of clogging. It was concluded that improper placement and curing led to uneven pavement thickness, irregular pore distribution within the pervious concrete, and highly variable strength values across the site, as well as sealed surfaces that prevented infiltration.

Predicting the Long-Term Field Performance of Coating Systems on Steel Using a Rapid Electrochemical Test: The Damage Tolerance Test

CORROSION ◽  
2012 ◽  
Vol 68 (3) ◽  
pp. 035007-1-035007-13 ◽  
Author(s):  
S.R. Taylor ◽  
F. Contu ◽  
L.M. Calle ◽  
J.P. Curran ◽  
W. Li
Keyword(s):  
Damage Tolerance ◽  
Field Performance ◽  
Tolerance Test ◽  
Electrochemical Test ◽  
Term Field

Development of Photocatalytic Pervious Concrete Pavement for Air and Storm Water Improvements

2012 ◽  
Vol 2290 (1) ◽  
pp. 161-167 ◽  
Author(s):  
Somayeh Asadi ◽  
Marwa M. Hassan ◽  
John T. Kevern ◽  
Tyson D. Rupnow
Keyword(s):  
Flow Rate ◽  
Mechanical Performance ◽  
Concrete Pavement ◽  
Pervious Concrete ◽  
Mix Design ◽  
Unit Weight ◽  
Experimental Program ◽  
Design Parameters ◽  
Operational Parameters ◽  
Cleaning Agents

Self-cleaning, air-purifying pervious concrete pavement is a promising technology that can be constructed with air-cleaning agents with superhydrophilic photocatalyst capabilities, such as titanium dioxide. Although this technology has the potential of supporting environment-friendly road infrastructure, its effectiveness depends on a number of design and operational parameters that need to be evaluated. The objective of this study was to evaluate the mechanical, environmental, and mix design parameters that influence the performance and effectiveness of photocatalytic pervious concrete pavement. To achieve this objective, an experimental program was conducted in which the effects of relative humidity level, pollutants' flow rate, and mix design parameters, including void ratio and depth of the photocatalytic layer, were investigated. Mechanical performance tests included porosity, unit weight, permeability, and compressive strength. The environmental efficiency of the samples to remove nitrogen oxides (NOx) from the atmosphere was measured in the laboratory. Results of the experimental program showed that increasing the depth of the photocatalytic layer increased NOx reduction efficiency. In addition, NOx removal efficiency decreased with the increase in the pollutant flow rate and increased with the increase in ultraviolet light intensity.

Long-term field study of a deep-corrugated metal box type culvert

1994 ◽  
Vol 31 (2) ◽  
pp. 175-180 ◽  
Author(s):  
Shad M. Sargand ◽  
Glenn A. Hazen ◽  
Teruhisa Masada ◽  
John O. Hurd
Keyword(s):  
Field Performance ◽  
Reference Points ◽  
Load Test ◽  
Static Load Test ◽  
Static Loads ◽  
Long Term Study ◽  
Corrugated Metal ◽  
Over Time ◽  
Term Field

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.

scholarly journals Energy Efficient Wireless Sink Node for Monitoring of Snow Environment

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.

scholarly journals Simulation and design of collector array units within large systems

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.

scholarly journals Field performance evaluation of pervious concrete pavement reinforced with novel discrete reinforcement

2019 ◽  
Vol 10 ◽  
pp. e00231 ◽  
Author(s):  
Othman AlShareedah ◽  
Somayeh Nassiri ◽  
Zhao Chen ◽  
Karl Englund ◽  
Hui Li ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Field Performance ◽  
Concrete Pavement ◽  
Pervious Concrete ◽  
Discrete Reinforcement

A field performance evaluation of the periodic maintenance for pervious concrete pavement

2020 ◽  
Vol 263 ◽  
pp. 121463 ◽  
Author(s):  
Nian Hu ◽  
Jiong Zhang ◽  
Shuang Xia ◽  
Ruonan Han ◽  
Zhaoxia Dai ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Field Performance ◽  
Concrete Pavement ◽  
Pervious Concrete ◽  
Periodic Maintenance
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