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Topic Review
Causes of Asphalt Pavement Blistering
No theoretical model effectively explains the blistering process, which provokes functional distress in asphalt pavements worldwide. Over the years, it has been possible to observe blistering on many asphalt pavements, collect information related to the specific contexts of its occurrence, and formulate hypotheses on the potential causes.
  • 1.7K
  • 13 Mar 2024
Topic Review
Failure Detection for Pipeline Networks
Pipeline networks have been widely utilised in the transportation of water, natural gases, oil and waste materials efficiently and safely over varying distances with minimal human intervention. In order to optimise the spatial use of the pipeline infrastructure, pipelines are either buried underground, or located in submarine environments. Due to the continuous expansion of pipeline networks in locations that are inaccessible to maintenance personnel, research efforts have been ongoing to introduce and develop reliable detection methods for pipeline failures, such as blockages, leakages, cracks, corrosion and weld defects.
  • 1.7K
  • 28 Jul 2021
Topic Review
Structural Health Monitoring System Based on Deep Learning
Concrete stands as the most widely used construction material globally due to its versatility, encompassing applications ranging from pavement, multifloor structures, and bridges to dams. However, these concrete structures endure structural stress and require close monitoring to prevent accidents and ensure sustainability throughout their complete life cycle. Artificial intelligence (AI) and computer vision (CV) have demonstrated considerable potential in diverse applications within construction engineering, including structural health monitoring (SHM) and inspection processes such as crack and damage detection, as well as rebar exposure. While it is undeniable that CV and deep learning models are transforming the construction industry by offering robust solutions for complex scenarios, there remain numerous challenges pertinent to their applications that require attention.  
  • 1.7K
  • 04 Feb 2024
Topic Review
Subsurface Landslide Monitoring Techniques
Landslides are a common and challenging geohazard that may be caused by earthquakes, rainfall, or manmade activity. Various monitoring strategies are used to safeguard populations at risk from landslides. This task frequently depends on the utilization of remote sensing methods, which include the observation of Earth from space, laser scanning, and ground-based interferometry. In recent years, there have been notable advancements in technologies utilized for monitoring landslides (i.e., subsurface systems). 
  • 1.7K
  • 06 Jun 2024
Topic Review
Image-Based Crack Detection Methods
After preprocessing of images, a multiple directional non-minimum suppression (MDNMS) method is applied for crack detection. A linear SVM classifier is used to differentiate between various pavements across Spain to determine optimal parameters for crack detection. The performance of the crack detection method is improved by adapting parameters specific to the pavement.
  • 1.7K
  • 19 Aug 2021
Topic Review
Fire Extinguishing Efficiency and Mechanism of C6F12O
The fire extinguishing efficiency of C6F12O has been fully investigated in both a laboratory burner scale and full-scale fire extinguishing experiment, the results of which show that the minimum extinguishing volume concentration of C6F12O is lower than HFCs, but the mass concentration is much higher. Although C6F12O has shown satisfactory fire extinguishing performance in various fire protection scenarios, fire enhancement phenomenon and the large production of HF have been observed during fire extinguishment. Furthermore, the fire extinguishing mechanism of C6F12O has been discussed. The flame suppression effect of C6F12O, combustion enhancement phenomenon and the influence of water in the reaction zone have been revealed. 
  • 1.7K
  • 15 Apr 2022
Topic Review
Conventional Roller Compaction Method
As an empirical control method, the conventional compaction has the characteristics of manual driving, construction site supervision, manual recording, and sampling point detection. Currently, conventional compaction methods can be divided into four types: sampling point detection, prediction and simulation analysis, construction site supervision, and influencing factor analysis. In actual engineering, conventional compaction methods mainly rely on the manual control of compaction parameters (such as the number of compaction times, compaction trajectory, vibration frequency, lift thickness, and driving speed) during construction, as well as the sampling point detection (such as compactness or dry density) of specified locations after construction to ensure compaction quality of earthwork.
  • 1.7K
  • 22 Apr 2022
Topic Review
AI Applications for Virtual Sensing of Underground Utilities
Accurately identifying the location and depth of buried utility assets became a considerable challenge in the construction industry, for which accidental strikes can cause important economic losses and safety concerns. While the collection of as-built utility locations is becoming more accurate, there still exists an important need to be capable of accurately detecting buried utilities in order to eliminate risks associated with digging. With advances in artificial intelligence (AI), an opportunity arose in conducting virtual sensing of buried utilities by combining robotics (e.g., drones), knowledge, and logic.
  • 1.7K
  • 18 May 2023
Topic Review
Bacteria-Based Self-Healing Concrete
Cracking is one of the main ways that concrete ages, allowing pollutants to seep within and potentially lowering the physical and mechanical strength and endurance of concrete structures. One of the healing procedures that merits research is the use of bacterially generated calcium carbonate precipitation in concrete mixtures to mend concrete cracks. 
  • 1.6K
  • 25 Nov 2022
Topic Review
Urban Heritage Facility Management
Urban Heritage Facility Management (UHFM) is an urban-scale function that integrates the management of all the supporting services to the people, place, processes, and technology necessary for the preservation of the significance, value, and authenticity of the urban heritage area leads to the creation of a strong, mutually supportive and non-exploitative community.
  • 1.6K
  • 30 Sep 2022
Topic Review
Fibrous Concretes Produced by Using Wollastonite
Production of cement and aggregate used in cement-based composites causes many environmental and energy problems. Decreasing the usage of cement and aggregate is a crucial and currently relevant challenge to provide sustainability. Inert materials can also be used instead of cement and aggregates, similar to pozzolanic materials, and they have positive effects on cement-based composites. One of the inert materials used in cement-based composites is wollastonite (calcium metasilicate-CaSiO3), which has been investigated and attracted attention of many researchers.
  • 1.6K
  • 19 Oct 2022
Topic Review
Soil Erosion Due to Defective Pipes
Sinkholes are a significant underground hazard that threatens infrastructure and lives and sometimes results in fatalities. The annual cost of sinkhole damages exceeds $300 million, although this estimate is likely underestimated due to the need for national tracking. Sinkholes can also alter natural drainage patterns, leading to increased flood risk. While natural sinkholes occur, those in urban areas are predominantly manmade, caused by soil erosion from defective pipes, typically due to aging. Climate change, storm surges, and urbanization have accelerated subsidence in urban environments, posing greater risks to critical infrastructure and densely populated areas. Extensive research has focused on soil erosion in dams; however, this knowledge does not necessarily apply to erosion through orifices, where gravity and other factors play significant roles. 
  • 1.6K
  • 11 Aug 2023
Topic Review
Inertial Sensors
Inertial sensors are sensors which do not need any referential points. They are based on inertia. Accelerometers and inclinometers are one of the most popular used in Structural Health Monitoring (SHM).
  • 1.6K
  • 28 Oct 2020
Topic Review
Crack Healing Technologies of Asphalt Pavement
Crack healing has been a key area of asphalt pavement research. Energy supply technologies (induction and microwave heating) have demonstrated significant efficacy in enhancing the crack healing capability of asphalt pavement, particularly in microcracks. Crack healing technologies can effectively prolong the service life of asphalt pavement, thereby further reducing the damage to the environment caused by road engineering, reducing energy consumption and CO2 emissions.
  • 1.6K
  • 20 Jun 2023
Topic Review
3D Printing Building Envelope Prefabricated
The Fourth Industrial Revolution represents the beginning of a profound change for the building sector. In the last decade, the perspective of shapes, materials, and construction techniques is evolving fast due to the additive manufacturing technology. On the other hand, even if the technology is growing fast and several 3D printed buildings are being developed worldwide, the potential of concrete 3D printing in building prefabrication remains unexplored. Consequently, the application of new digital fabrication technologies in the construction industry requires a redesign of the construction process and its components. This paper proposes a novel conception, design, and prototyping of a precast building envelope to be prefabricated with extrusion-based 3D concrete printing (3DCP). 
  • 1.6K
  • 20 Aug 2021
Topic Review
Pervious Concrete Mixes and Impact on Natural Fibers
Pervious concrete (PC), also known as porous or permeable concrete, is a structural type of concrete that possesses a relatively large void content ranging between 15 and 35%, which allows fluids and gases to pass through them, thus eliminating ponding potential on the surface.
  • 1.6K
  • 22 Dec 2023
Topic Review
Ramp Metering
Ramp meters are traffic signals installed on freeway ramps to control the frequency at which vehicles enter the flow of traffic.
  • 1.6K
  • 18 Mar 2021
Topic Review
Digital Image Correlation Methodology Evolution
Reliable assessment and prediction of the technical condition of reinforced concrete structures require accurate data of the stress–strain state of the structure at all stages of loading. The most appropriate technique to obtain such information is digital image correlation. Digital image correlation is a class of contactless methods which includes the following stages: obtaining an image from a studied physical object, saving it in digital form, and further analysis in order to obtain the necessary information about the stress–strain state of the structure. 
  • 1.6K
  • 19 Oct 2022
Topic Review
Influence of Web Holes on Cold-Formed Steel Members
The use of cold-formed steel (CFS) members in structural engineering has been on the increase recently due to a wide range of benefits. The placement of electrical and/or plumbing installations within the floor or wall thickness requires that members are being manufactured with holes along the web, inevitably affecting their resistance.
  • 1.6K
  • 12 Aug 2022
Topic Review
Power Line Failures/Faults and Wildfire Initiation Mechanisms
Wildfires are one of the most hazardous natural disasters in Australia in terms of fatalities, property damage and financial losses. Events of catastrophic wildfires are recorded across the world including in the United States and Canada. Failures along power distribution infrastructure and network faults have been identified as some of the causes for the initiation of wildfires. Thus, it is critical to better understand the mechanisms and the potential prevention strategies for wildfires caused by power distribution system faults.
  • 1.6K
  • 15 Jun 2023
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