Diagnosis of reinforced concrete structures by Ground Penetrating Radar survey - case study

Sham, Janet F.C.; Wallace, William L.

doi:10.1109/iwagpr.2017.7996058

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…Lai et al [ 20 ] adopted ultrasonic velocity method to detect the damage of the ultra-high performance concrete under repeated penetration and explosions at different depths. Sham and Lai [ 21 ] utilized the GRP technique for the detection of cracks and prediction of damages in actual concrete structures. Epasto et al [ 22 ] applied the impact-echo method for fire-damage detection on concrete using a wavelet time-frequency technique.…”

Section: Introductionmentioning

confidence: 99%

Damage Detection of a Concrete Column Subject to Blast Loads Using Embedded Piezoceramic Transducers

Deng

Cai

et al. 2018

Sensors

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Some of the most severe structural loadings come in the form of blast loads, which may be caused by severe accidents or even terrorist activities. Most commonly after exposure to explosive forces, a structure will suffer from different degrees of damage, and even progress towards a state of collapse. Therefore, damage detection of a structure subject to explosive loads is of importance. This paper proposes a new approach to damage detection of a concrete column structure subjected to blast loads using embedded piezoceramic smart aggregates (SAs). Since the sensors are embedded in the structure, the proposed active-sensing based approach is more sensitive to internal or through cracks than surface damage. In the active sensing approach, the embedded SAs act as actuators and sensors, that can respectively generate and detect stress waves. If the stress wave propagates across a crack, the energy of the wave attenuates, and the reduction of the energy compared to the healthy baseline is indicative of a damage. With a damage index matrix constructed by signals obtained from an array of SAs, cracks caused by blast loads can be detected throughout the structure. Conventional sensing methods such as the measurement of dynamic strain and acceleration were included in the experiment. Since columns are critical elements needed to prevent structural collapse, knowledge of their integrity and damage conditions is essential for safety after exposure to blast loads. In this research, a concrete column with embedded SAs was chosen as the specimen, and a series of explosive tests were conducted on the column. Experimental results reveal that surface damages, though appear severe, cause minor changes in the damage index, and through cracks result in significant increase of the damage index, demonstrating the effectiveness of the active sensing, enabled by embedded SAs, in damage monitoring of the column under blast loads, and thus providing a reliable indication of structural integrity in the event of blast loads.

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Section: Introductionmentioning

confidence: 99%

Damage Detection of a Concrete Column Subject to Blast Loads Using Embedded Piezoceramic Transducers

Deng

Cai

et al. 2018

Sensors

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“…Second, no assets that are specifically dedicated to handle halal products [7]. Third, halal integrity risk increasing due to mixing between halal and non-halal product in one container [28]. Fourth, the difficulty of tracking and tracing the driver's attitude and procedures when transporting halal products [29].…”

Section: Results and Analysismentioning

confidence: 99%

Literature Analysis of Halal Supply Chain

Ardiantono¹,

Baihaqi²,

Sugihartanto³

et al. 2022

Proceedings of the 3rd International Conference on Business and Management of Technology (ICONBMT 2021)

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The halal industry has attracted worldwide attention from both the government and the business sector. Industry Halal is in demand by Muslim countries and the majority of countries' non-Muslim population. The increasing interest of the world community to consume quality halal products not only because of belief but also halal products to ensure good product quality by considering the ethics of religion, health, safety, and environment friendly. The role of the government in developing the necessary infrastructure and facilities for Halal SCM for MSMEs needs to be evaluated. Many MSMEs aim to implement the halal logistics concept, but they do not have the basic knowledge and infrastructure to help them. The objective of this research is for mapping the barriers to implementing Halal Supply Chain in Indonesian Micro, Small, and Medium Enterprises (MSMEs). This study uses a qualitative approach with the literature review method. Halal SCM's problems are occurred in processing, packaging, storage, transport, policy, and fundamentals. Meanwhile, the solution and strategy come from processing, policy, fundamental, technology, IoT, Block chain, and corporate governance.

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“…Dawood et al [ 89 ] presented an improved visual-based analysis of ground-penetrating radar data for the detection of air and water voids in tunnels. Moreover, an evaluation flowchart based on inspection of pier structure considering B-scans and GPR signal energy was proposed in Reference [ 90 ].…”

Section: Corrosion Monitoring Using Ground-penetrating Radarmentioning

confidence: 99%

Non-Destructive Corrosion Inspection of Reinforced Concrete Using Ground-Penetrating Radar: A Review

2021

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Reduced maintenance costs of concrete structures can be ensured by efficient and comprehensive condition assessment. Ground-penetrating radar (GPR) has been widely used in the condition assessment of reinforced concrete structures and it provides completely non-destructive results in real-time. It is mainly used for locating reinforcement and determining concrete cover thickness. More recently, research has focused on the possibility of using GPR for reinforcement corrosion assessment. In this paper, an overview of the application of GPR in corrosion assessment of concrete is presented. A literature search and study selection methodology were used to identify the relevant studies. First, the laboratory studies are shown. After that, the studies for the application on real structures are presented. The results have shown that the laboratory studies have not fully illuminated the influence of the corrosion process on the GPR signal. Also, no clear relationship was reported between the results of the laboratory studies and the on-site inspection. Although the GPR has a long history in the condition assessment of structures, it needs more laboratory investigations to clarify the influence of the corrosion process on the GPR signal.

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Diagnosis of reinforced concrete structures by Ground Penetrating Radar survey - case study

Cited by 4 publications

References 36 publications

Damage Detection of a Concrete Column Subject to Blast Loads Using Embedded Piezoceramic Transducers

Damage Detection of a Concrete Column Subject to Blast Loads Using Embedded Piezoceramic Transducers

Literature Analysis of Halal Supply Chain

Non-Destructive Corrosion Inspection of Reinforced Concrete Using Ground-Penetrating Radar: A Review

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