Detection of Delamination in Concrete Pavements Using Ground-Coupled Ground-Penetrating Radar Technique

2008 ◽  
Vol 2087 (1) ◽  
pp. 68-77 ◽  
Author(s):  
Juanyu Liu ◽  
Dan G. Zollinger ◽  
Robert L. Lytton
Keyword(s):  
Ground Penetrating Radar ◽  
Concrete Pavements ◽  
Ground Penetrating ◽  
Radar Technique

scholarly journals Study on the Use of Ground-Penetrating Radar Technique to Recognize Tin deposits in Bangka Island

2019 ◽  
Vol 318 ◽  
pp. 012027
Author(s):  
Wahyudi W. Parnadi ◽  
Sarwo S. Amin ◽  
Mohamad N. Heriawan ◽  
Rizandi G. Parnadi
Keyword(s):  
Ground Penetrating Radar ◽  
Tin Deposits ◽  
Ground Penetrating ◽  
Radar Technique

Subsurface elements prediction for the design of forest road using ground penetrating radar technique

2017 ◽  
Vol 78 (2) ◽  
pp. 753-761
Author(s):  
Iman Pazhouhan ◽  
Akbar Najafi ◽  
Abolghasem KamkarRouhani ◽  
Javad Vahidi
Keyword(s):  
Ground Penetrating Radar ◽  
Forest Road ◽  
Ground Penetrating ◽  
Radar Technique

scholarly journals Effect of Moisture Content on Calculated Dielectric Properties of Asphalt Concrete Pavements from Ground-Penetrating Radar Measurements

2021 ◽  
Vol 14 (1) ◽  
pp. 34
Author(s):  
Qingqing Cao ◽  
Imad L. Al-Qadi
Keyword(s):  
Dielectric Properties ◽  
Numerical Model ◽  
Moisture Content ◽  
Ground Penetrating Radar ◽  
Asphalt Concrete ◽  
Concrete Pavements ◽  
Proposed Model ◽  
Moisture Variation ◽  
Ground Penetrating ◽  
Non Destructive

Moisture presence in asphalt concrete (AC) pavement is a major cause of damage to the pavement. In recent decades, an increasing need exists for non-destructive detection and monitoring of the moisture content in AC pavement. This paper provides a simulated approach to quantify the effect of internal moisture content on AC pavement dielectric properties using ground-penetrating radar (GPR). A heterogeneous numerical model was developed to simulate AC pavement with internal moisture at various saturation levels. The numerical model was validated using GPR surveys on cold-in-place recycling treated pavements. An empirical formula was derived from the simulation to correlate the dielectric constant with the moisture content for non-dry AC pavement. The results validated the proposed model and, hence, demonstrated the ability of GPR to monitor moisture variation in AC pavements.

Inspection of Grouting Quality for Grouted Tendon Ducts Using Ground Penetrating Radar Technique

2013 ◽  
Vol 639-640 ◽  
pp. 1051-1055 ◽  
Author(s):  
Xian Yan Zhou ◽  
Jian Luan ◽  
Da Hai Zhang
Keyword(s):  
Nondestructive Testing ◽  
Ground Penetrating Radar ◽  
Prestressed Concrete ◽  
Concrete Structures ◽  
Optimal Methods ◽  
Ground Penetrating ◽  
Radar Technique ◽  
Post Tensioned

With the wide applications of post-tensioned concrete structures, the grouting conditions of tendon ducts are paid more attentions. In order to accurately assess the internal grouting quality of the grouted tendon ducts and certainly guarantee the lifetime of prestressed concrete structures Ground Penetrating Radar (GPR), which is a kind of nondestructive testing (NDT) method, has been applied to inspect and evaluate qualitatively and quantitatively on the grouting defects, respectively. A series of in-house tests were carried out for simulating the defects of tendon ducts by foams with different sizes. The results show that the GPR technic was one of the optimal methods for inspecting the internal grouting quality of grouted tendon ducts for post-tensioned concrete structures.

Evaluating the Quality of Curing Applications on Concrete Pavements with Ground-Penetrating Radar

2021 ◽  
pp. 036119812199636
Author(s):  
Alireza Joshaghani ◽  
Dan G. Zollinger
Keyword(s):  
Ground Penetrating Radar ◽  
Weather Conditions ◽  
Concrete Pavement ◽  
Concrete Pavements ◽  
Dielectric Measurements ◽  
Field Investigations ◽  
Pavement Construction ◽  
Ground Penetrating ◽  
Curing Compound

The management of concrete pavement curing must take several factors into account, such as the type of curing compound, the rate of the curing application, the uniformity of the curing application, the timing of the application, and the ambient weather conditions. This paper aims to elucidate a new curing application protocol for new concrete pavement construction and introduce a technique to address curing viability. Data for the development of the protocol were obtained from field investigations involving a series of test sections associated with concrete paving projects in: Victoria, TX; Itasca, IL; and Jacksonville, FL. For this undertaking, ground-penetrating radar technology was used to evaluate the efficacy of curing in relation to repeatability and uniformity. Statistical analysis was used to validate the utility of using dielectric measurements to qualify the curing quality. The rate of decrease in the dielectric constant was the critical parameter for evaluating a curing practice. Also, based on the coefficient of variation of data collection, the repeatability of data was acceptable. Finally, as a new method for checking the uniformity of curing applications, percent within limits (PWL) was implemented. Based on the PWL results, the hand-spraying led to a higher degree of non-uniformity in the spraying patterns compared with the spraying machine.

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